Psychiatry Flashcards

1
Q

Mental state examination: What is involved in the mental state examination?

A

ASEPTIC mnemonic

A mental state examination is used to assess patients presenting with mental health symptoms and disorders. It is equivalent to performing an abdominal examination for a patient with abdominal pain. It offers a structure for assessing and documenting the essential features of a mental health presentation.

The examination involves observing, assessing and commenting on:

Appearance and behaviour
Speech
Mood and affect
Thought
Perception
Cognition
Insight
Judgement

A risk assessment typically follows a mental state examination, giving an estimate of the risk of self-harm, suicide and harm to others.

The features listed below describe typical exam findings in patients with depression, mania and schizophrenia. In reality, patients vary tremendously. For example, depressed patients may appear and sound normal despite having a very low mood and suicidal intentions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

JUST FOR READING

Mental state examination - components of appearence and behavoir

A

Depressed patients may show signs of poor self-care, with poor hygiene and old clothes. There may be self-harm scars. They may have weight loss or weight gain. They may have slow movements and speech (psychomotor retardation), reduced eye contact, downward gaze and a stooped posture. Alternatively, they may be fidgety and restless (psychomotor agitation). They may be tearful during the consultation

Manic patients may be dressed in bright colours, extravagant outfits, or inappropriate outfits. Alternatively, they may be dressed chaotically and appear disheveled. Their behaviour is hyperactive, energetic, talkative, and overly familiar. They may display disinhibition and sexually inappropriate behaviour. Eye contact may be intense. They may have psychomotor agitation and appear fidgety and restless.

Patients with schizophrenia may be unkempt, dressed inappropriately for the environment or show signs of self-neglect. They may behave agitated, suspicious or aggressive. Alternatively, they may be withdrawn, quiet and blank. Catatonia may be present, with the patient holding unusual postures, performing odd actions, repeating sounds or words, or remaining blank and unresponsive.

Extrapyramidal side-effects from antipsychotic drugs may be observed, including:

Akathisia (psychomotor restlessness, with an inability to stay still)
Dystonia (abnormal muscle tone, leading to abnormal postures)
Pseudo-parkinsonism (tremor and rigidity, similar to Parkinson’s disease)
Tardive dyskinesia (abnormal movements, particularly affecting the face)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

JUST FOR READING

Mental state examination - components of Speech

A

Depressed patients may have slow, quiet, soft and monotone speech. They may have “poverty of speech” (alogia).

Manic patients have characteristically pressured speech, which is fast, unrelenting, and impossible to interrupt. It is typically loud and confident.

Patients with schizophrenia may have poverty of speech (alogia) or poverty of content (speech without meaning). Due to thought disorder, their speech may be incoherent and impossible to understand. They may use invented words (neologisms). Thought blocking can cause sudden interruptions to the flow of thoughts and speech. Word salad refers to when speech contains a completely random jumble of words and phrases with no meaning.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

MSE - Mood and affect info for reading

What is blunted affect vs incongruent affect?
what is euthymia?

A

Euthymia refers to a normal and neutral mood, not low or elevated.

Depressed patients have a low mood. They may describe their mood using many terms, such as sad, depressed, numb, flat, hopeless, empty, miserable or terrible. Blunted affect refers to a reduced emotional range (the ability to experience positive and negative emotions).

Manic patients have an elevated mood. This may be described as euphoric, elated or excited. They can also be irritable and have a labile mood (their mood quickly flips from elevated to angry or depressed).

Patients with schizophrenia may display affective flattening (reduced emotional reactions), anhedonia (lack of interest in activities) and avolition (lack of motivation). Their mood may seem odd or incongruent (e.g., appearing happy when describing upsetting events).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

MSE - thoughts

Define:
- flight of ideas
- grandiose delusions
- delusions
- thought disorder
-somatic passivity
- thought insertion or withdrawal
- through broadcasting
- persecutoru delusion
- ideas of reference
- loosening of associations
- knights move thinking
- tangentiality

A

Depressed patients have negative thoughts, such as thoughts of guilt, hopelessness, worthlessness, self-harm and suicide, which they may ruminate on. They may have poverty of ideas, with reduced production of thoughts.

Manic patients often have thoughts of increased self-worth, self-confidence, optimism and grandiose plans. The typical feature is flight of ideas, which refers to rapidly flowing thoughts that jump quickly from one idea to another. There is generally some understandable connection to the flow of ideas. Grandiose delusions (e.g., that they have special powers or special importance) may be present.

Patients with schizophrenia may have delusions (beliefs that are strongly held and clearly untrue) and thought disorder (disorganised thoughts causing abnormal speech and behaviour). This makes the things they say difficult or impossible to follow and understand. Specific examples include:

Somatic passivity (believing that an external entity is controlling their sensations and actions)
Thought insertion or thought withdrawal (believing that an external entity is inserting or removing their thoughts)
Thought broadcasting (believing that others are overhearing their thoughts)
Persecutory delusions (a false belief that a person or group is going to harm them)
Ideas of reference (a false belief that unconnected events or details in the world directly relate to them)
Preoccupations (being focused and absorbed with one thought without being able to move to the next)
Loosening of associations (no logical association linking one thought to the next)
Knight’s move thinking (jumping from one thought to another without a logical association or flow)
Tangentiality (goes off on a tangent from the original topic without returning to that topic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Just for reading - MSE Cognition

A

Memory, concentration, orientation to person, place and time, cognitive impairment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

MSE perception:

Define haluccinations?
Define delusional perception?

A

Hallucinations (hearing or seeing things (perception) without an external stimulus) may be found in:

Psychotic depression
Mania with psychosis
Schizophrenia (particularly a voice narrating the person’s actions)

Usually third peron auditory hallucinations are seen in psychosis.

A delusional perception (seen in schizophrenia and psychosis) occurs when the patient experiences an ordinary and unremarkable perception (e.g., a cat crossing the road) that triggers a sudden, often self-related delusion (e.g., “and I knew I would be meeting the aliens on behalf of humanity”).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

MHA - What is:

  • section 2
  • section 3
  • section 4
  • section 5 (2)
  • section 5 (4)
  • section 136
A

Section 2

Section 2 involves compulsory admission for assessment following a Mental Health Act assessment, with a maximum period of 28 days.

It cannot be renewed. It ends in either discharge or further detention under Section 3.

Section 3

Section 3 involves compulsory admission for treatment. The maximum period is six months, after which the Responsible Clinician can arrange to renew it for further treatment.

Detention under Section 3 requires a Mental Health Act assessment. Patients that are well-known to mental health services may be detained under Section 3 straight from the community. Alternatively, patients may be detained under Section 3 following assessment under Section 2.

Section 4

Section 4 is used to detain patients for up to 72 hours in urgent scenarios where other procedures cannot be arranged in time. It requires an AMHP and one doctor. It is followed by a Mental Health Act assessment.

Section 5(2)

Section 5(2) is used in an emergency to detain patients who are already in hospital voluntarily. It lasts up to 72 hours and requires only one doctor. It is followed by a Mental Health Act assessment.

Section 5(4)

Section 5(4) is used in an emergency to detain patients who are already in hospital voluntarily. It lasts up to 6 hours and requires only one nurse. It is followed by a Mental Health Act assessment.

Section 136

Section 136 is used by the police to remove someone that appears to have a mental health disorder from a public place and take them to a place of safety where they can be assessed. It lasts up to 24 hours. It is followed by a Mental Health Act assessment.

Mental health hospitals often have 136 suites that act as a place of safety and are used for assessment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a mental helath act assessement?

Who is needed for a mental health act assessement?

A

A Mental Health Act assessment involves a detailed evaluation to determine whether to detain someone under the Mental Health Act.

The Approved Mental Health Professional (AMHP) is the primary person making the application and organising the admission. The Nearest Relative can also make the application.

The decision needs to be recommended by two registered medical practitioners (doctors):

A Section 12 doctor
Another doctor (e.g., their GP)

A Mental Health Act assessment can result in compulsory admission under Section 2 or Section 3.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Define depression?

Causes of depression?

A

Depression is a disorder that causes persistent feelings of low mood, low energy and reduced enjoyment of activities. It affects people of all ages and from all backgrounds.

Depression may be triggered by life events (e.g., the loss of a loved one). However, it can occur without any apparent triggers. It is thought to be caused by genetic, psychological, biological and environmental factors. Having an affected relative is a significant risk factor.

Physical health conditions can trigger or exacerbate depression, and it commonly occurs with conditions such as stroke, myocardial infarction, multiple sclerosis and Parkinson’s disease.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Presentation of Depression?

Environmental and Essential factors to explore when taking a history

A

The core symptoms of depression are:

Low mood
Anhedonia (a lack of pleasure or interest in activities)

Emotional symptoms include:

Anxiety
Irritability
Low self-esteem
Guilt
Hopelessness about the future

Cognitive symptoms include:

Poor concentration
Slow thoughts
Poor memory

Physical symptoms include:

Low energy (tired all the time)
Abnormal sleep (particularly early morning waking)
Poor appetite or overeating
Slow movements

Environmental factors may contribute to the condition, such as:

Potential triggers (e.g. stress, grief or relationship breakdown)
Home environment (e.g., housing situation, who they live with and their neighbourhood)
Relationships with family, friends, partners, colleagues and others
Work (e.g., work-related stress or unemployment)
Financial difficulties (e.g., poverty and debt)
Safeguarding issues (e.g., abuse)

Essential factors to explore when taking a history include:

Caring responsibilities (e.g., children or vulnerable adults)
Social support
Drug use
Alcohol use
Forensic history (e.g., violence or abuse)

Every encounter should include a risk assessment for:

Self-neglect
Self-harm
Harm to others (including neglect)
Suicide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What should be considered in a psychiatric risk assessment?

A

Every encounter should include a risk assessment for:

Self-neglect
Self-harm
Harm to others (including neglect)
Suicide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the purpose of the Mental Health Act

A

The Mental Health Act (1983) (updated in 2007) provides a legal framework for keeping patients in hospital against their wish for assessment and treatment of a mental health disorder. This is called being detained or sectioned under the Mental Health Act.

When a patient with capacity agrees to be admitted to hospital voluntarily, this is called a voluntary or informal admission. An informal admission does not involve detention under the Mental Health Act. Section 131 of the MHA explains that patients can be admitted without involving the MHA.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Pathophysiology of depression

A

The monoamine hypothesis:
The pathophysiology is not fully understood and likely involves a combination of complex mechanisms. At least partially, it appears to involve a disturbance in neurotransmitter activity in the central nervous system, particularly serotonin, also called 5-hydroxytryptamine (5-HT). This makes sense, considering that medications that boost serotonin are effective treatments.

The cause is often described as “a chemical imbalance” or “low levels of serotonin”, which may be helpful as a simple explanation but is probably overly simplistic.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Investigations for depression?

A

The key investigation used to screen for and assess the severity of depression is PHQ-9 (patient health questionnaire). There are nine questions about how often the patient is experiencing symptoms in the past two weeks. The higher the score, the more severe the depression:

5-9 indicates mild depression10-14 indicates moderate depression
15-19 indicates moderately severe depression
20-27 indicates severe depression

Textbook - Run routine bloods to look for an organic cause - hypothyroidsim, anaemia, diabetes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Management options for depression - 4 key points

key Support options for a mental health crisis? - 2

Management of Unresponsive or severe depression? - 3

A

Management options for depression include:

  • Active monitoring and self-help
  • Address lifestyle factors (exercise, diet, stress and alcohol) - see below
  • Therapy (e.g., cognitive behavioural therapy, counselling or psychotherapy)
  • Antidepressants (selective serotonin reuptake inhibitors are first-line)

Basically one point for Bio, pyscho, social

  • there is good evidence that exercise efficacy is comparable to antidepressants or therapy
  • NICE - do not recommend offering antidepressants first-line to patients with less severe depression (defined as less than 16 on the PHQ-9) unless they have a preference for taking antidepressants
  • Patients with severe or psychotic depression require urgent specialist input and management.

Mental Health crisis management:
The crisis resolution and home treatment team offer intensive support and treatment for patients having a mental health crisis without them being admitted to hospital (usually for a short period only).

Admission may be required where there is a high risk of self-harm, suicide or self-neglect or where there may be an immediate safeguarding issue.

Additional specialist treatments for unresponsive or severe depression include:

Antipsychotic medications (e.g., olanzapine or quetiapine)
Lithium
Electroconvulsive therapy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is psychotic depression?

Management

A

Psychotic depression involves the symptoms of psychosis. Psychosis involves:

Delusions (beliefs that are strongly held and clearly untrue)
Hallucinations (hearing or seeing things that are not real)
Thought disorder (disorganised thoughts causing abnormal communication and behaviour)

When psychosis accompanies depression, it generally indicates severe depression, although psychosis can occur with mild or moderate depression.

Treatment involves a combination of:
- antipsychotic drugs (e.g., olanzapine or quetiapine)
- antidepressants.
- Electroconvulsive therapy (ECT) is also an option.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is ECT?

Anaesthesia used?

Indications?

Side effects?

A

Electroconvulsive therapy is the passage of a small electrical current through the brain with the aim of inducing a generalised bilateral clonic seizure for at least 30 seconds which is therapeutic.

The electical dose whould be sufficiently above the individual seizsure threshold to be clinically effective but not so high that it contributes the cognitive adverse effects of treatment.

The mechanism of action is not fully understood but it is thought to alter the neuroanl membrane permiability and therefore reduce activty in reverberating circuits between the limbic system and pre-frontal cortex. DONT MEMORISE THIS.

The procedure occours under general anaethetic and a muscle relacant (suxamethonium) is given to limit the motor effects of the seizure.

Can be bilateral (one electrode on each side of the head) or unilateral (both of the non-dominant cerebral hemisphere). Bilateral is more effective but with more cognitive side effects.

The patient usually required 6-12 treatment sessions, delivered twice a week.

Indications - ECT - Euphoric, catatonic, tearful
- E - treatment reistant mania
- C- catatonia in schizoprenia
- T - tearful - severe life threatening/ treatment-resistant depression/psychotic depression

SEVERE DEPRESSION IS THE MOST COMMON INDICATION

Side Effects:
- headache and post treatment confusion
- muscle aches
- short term memory loss
- prolongued seizure and status epilcticus
- dental trauma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Post Natal depression:

What is the spectrum of postnatal mental health issues?

When does each occur?

A

There is a spectrum of postnatal mental health issues:

  • Baby blues is seen in the majority of women in the first week or so after birth
  • Postnatal depression is seen in about one in ten women, with a peak around three months after birth
    -Puerperal psychosis is seen in about one in a thousand women, starting a few weeks after birth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are baby blues?

Management?

A

Baby blues affect more than 50% of women in the first week or so after birth, particularly first-time mothers.

It presents with symptoms such as mood swings, low mood, anxiety, irritability and tearfulness.

Baby blues may be the result of a combination of significant hormonal changes, recovery from birth, sleep deprivation, increased responsibility and difficulty with feeding.

Symptoms are usually mild, last only a few days and resolve within two weeks of delivery. No treatment is required.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is post-natal depression?

Management?

A

Postnatal depression is similar to depression that occurs outside of pregnancy, with the classic triad of low mood, anhedonia (lack of pleasure in activities) and low energy.

Typically, women are affected around three months after birth. Symptoms should last at least two weeks before postnatal depression is diagnosed (me - usually lasts a few months).

Treatment is similar to depression at other times, depending on the severity:

Mild cases may be managed with additional support, self-help and follow up with their GP

Moderate cases may be managed with antidepressant medications (e.g. SSRIs) and cognitive behavioural therapy

Severe cases may need input from specialist psychiatry services, and rarely inpatient care on the mother and baby unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Screening test for post natal depression?

Interpretation of results?

A

The Edinburgh postnatal depression scale can be used to assess how the mother has felt over the past week as a screening tool for postnatal depression. There are ten questions, with a score out of 30 points.

A score of 10 or more suggests postnatal depression.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is puerperal psychosis?

4 Management?

A

Puerperal psychosis is a rare (0.2% women) but severe illness that typically has an onset between two to three weeks after delivery. Women experience full psychotic symptoms, such as:

Delusions
Hallucinations
Depression
Mania
Confusion
Thought disorder

Women with puerperal psychosis need urgent assessment and input from specialist mental health services.

Treatment is directed by specialist services, and may involve:

  • Admission to the mother and baby unit
  • Cognitive behavioural therapy
  • Medications (antidepressants, antipsychotics or mood stabilisers)
  • Electroconvulsive therapy (ECT)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the main types of Antidepressant medication? 3 + 1

What is the mechanism of action of the main 3?

A

The main types of antidepressants are:

Selective serotonin reuptake inhibitors (SSRIs)
Serotonin and norepinephrine reuptake inhibitors (SNRIs)
Tricyclic antidepressants (TCAs)
Others (e.g., mirtazapine and vortioxetine)

Mechanism of Action

Neurones (nerve cells) communicate with each other at connections called synapses. Each neurone is connected to many other neurones via synapses. The synapse is found at the end of one neurone (the axon terminal) and the start of another (the dendrite). The axon terminal releases chemicals called neurotransmitters, such as dopamine, serotonin, noradrenaline and gamma-aminobutyric acid (GABA). The neurotransmitter crosses the synapse and stimulates receptors on the post-synaptic membrane, creating a response in the neurone. Once this stimulation occurs, the neurotransmitter is returned to the axon terminal of the original neurone (reuptake).

Selective serotonin reuptake inhibitors (SSRIs) work by blocking the reuptake of serotonin by the presynaptic membrane on the axon terminal. This results in more serotonin in the synapses throughout the central nervous system, boosting the communication between neurones.

Serotonin and norepinephrine reuptake inhibitors (SNRIs) work by blocking the reuptake of serotonin and noradrenaline by the presynaptic membrane. This results in more serotonin and noradrenaline in the synapses throughout the central nervous system.

Tricyclic antidepressants have a more complex mechanism. They block the reuptake of serotonin and noradrenaline by the presynaptic membrane. They also have additional actions, including blocking acetylcholine and histamine receptors, which give them anticholinergic and sedative side effects.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

SSRIs - Which drugs:

  • Can cause weight gain and discontinuation symptoms?
  • can cause cardiac arrhythmia?
  • has a long half life and is first line in children and adolescents?
  • Is safest in patients with heart disease and useful in anxiety disorders as well?

Key side effects of SSRIs? -7 get as many as you can x

A

Sertraline:
- helpful anti-anxiety effects
- one of the safest in patients with heart disease (MI or heart failure)
- SE - higher rate of diarrhoea

Citalopram and Escitalopram:
- can prolong the QT interval, although this effect is dose-dependent (a higher dose is more likely to cause a prolonged QT). QT prolongation can lead to torsades de pointes. They are considered to be the least safe SSRI in patients with heart disease and arrhythmia (although still a lot safer than TCAs).

Fluoxetine:
- long half life of 4-7 days - remains active in the body long after stopping
- first line in children and adolescents.

Paroxetine:
- may cause weight gain
- is more likely to cause discontinuation (withdrawal) symptoms.

Key side effects of SSRIs include:

Gastrointestinal symptoms (e.g., nausea and diarrhoea)
Headaches
Sexual dysfunction, such as loss of libido, erectile dysfunction and difficulty achieving an organism
Hyponatraemia (due to SIADH)
Anxiety or agitation, typically in the first few weeks of use
Increased suicidal thoughts, suicide risk and self-harm (this applies to all antidepressants)
Increased risk of bleeding (e.g., gastrointestinal bleeding, intracranial haemorrhage and postpartum haemorrhage)- The risk of bleeding is significantly increased when SSRIs are taken alongside anticoagulants or NSAIDs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

SNRIs?

2 Examples?

Contraindicated when?

2 key Indications?

A

Examples of SNRIs include duloxetine and venlafaxine.

They have similar side effects to SSRIs. They can increase the blood pressure and are contraindicated in uncontrolled hypertension.

Indications:
Venlafaxine is often used when there is an inadequate response to other antidepressants. It is more likely to cause discontinuation symptoms when stopped. It has an increased risk of death from overdose.

Duloxetine is also used to treat neuropathic pain, particularly diabetic neuropathy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

TCAs

  • common indication?
  • key side effect? - 2 main ones
A

Examples of tricyclic antidepressants (TCAs) include amitriptyline and nortriptyline. They are commonly used at a low dose to treat neuropathic pain. The neuropathic pain dose is too low to treat depression.

Tricyclic antidepressants are particularly known to cause arrhythmias, including tachycardia, prolonged QT interval and bundle branch block. The effects are dose-dependent. Their effect on the heart makes them very dangerous in overdose, with a high risk of death. For these reasons, they are not generally used to treat depression, especially in patients with heart disease or risk factors for suicide.

They have anticholinergic side effects, such as dry mouth, constipation, urinary retention, blurred vision and cognitive impairment. They also cause sedation and are typically taken at night.

Aaron you know this hun!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is Mirtazapine?

Key side effects

A

An anti-depressant medication.

Mirtazapine has key side effects of sedation, increased appetite and weight gain. It is taken at night due to the sedative effect. The sedative effect appears to be greatest at low doses (e.g., 15mg) and less present at higher doses (e.g., 45mg). Mirtazapine is less likely to cause sexual dysfunction compared with SSRIs.

TOM TIP: The side effects of sedation and increased appetite may be beneficial, depending on the patient. In someone with a loss of appetite, weight loss, and poor sleep due to depression, these side effects can be very helpful. For this reason, it is commonly used in older patients. However, in someone else who is overweight and oversleeping already, these side effects would be a big problem.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is Vortioxetine

A

Vortioxetine is used as a third-line treatment after an inadequate response to two other antidepressants (NICE TA367 2015). It acts as a serotonin reuptake inhibitor and also acts to stimulate and block various types of serotonin receptors. It has helpful anti-anxiety effects. It has a particularly good side effect profile and is considered safe with heart disease. It has minimal effect on sexual function and almost no risk of discontinuation symptoms. However, it commonly causes nausea for the first few weeks.

Not a key card but good to be aware of.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Key Points for starting, swapping and stopping antidepressants.

A

Starting Antidepressants:

When starting antidepressants, there can be an initial period of worsened agitation, anxiety, suicidal thoughts and acts of suicide. This is particularly a problem in younger patients.

The NICE clinical knowledge summaries (2024) recommend arranging a review within two weeks of starting an antidepressant (one week in patients aged 18-25 due to the increased risk of suicide).

There is usually a noticeable response within 2-4 weeks of treatment. Where there is an inadequate response, the next step is to consider increasing the dose or switching to an alternative treatment.

Swapping Antidepressants:

Swapping antidepressants depends on the medication involved. Always check the guidelines to ensure the correct regime for swapping.

Some can be directly switched, stopping the previous medication and starting the new one the next day. This is the case for switching between SSRIs and SNRIs (except fluoxetine due to the long half-life).

Others need to be cross-tapered over several weeks (e.g., switching between an SSRI and mirtazapine), gradually reducing the dose of the existing drug while increasing the dose of the new one.

Stopping Antidepressants:

Once antidepressants are started, they should be continued for at least six months before stopping (or two years in recurrent depression). Withdrawing them too early can lead to the depression returning.

Antidepressants should not be stopped suddenly. The dose should be reduced slowly over at least four weeks to minimise discontinuation symptoms (unless there is an urgent need to stop).

Discontinuation symptoms are usually mild but occasionally are more severe. They typically start within 2-3 days of stopping treatment and resolve within 1-2 weeks. Possible symptoms include:

Flu-like symptoms
Electric shock-like sensations
Irritability
Insomnia
Vivid dreams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is Serotonin Syndrome?

3 key categories of symptoms?

management?

A

Serotonin syndrome can range from mild symptoms to severe and potentially life-threatening. It is caused by excessive serotonin activity. It usually occurs with higher doses of antidepressants and when multiple antidepressants are used together.

There is a long list of possible symptoms, which fall into three categories:

Altered mental state (e.g., anxiety and agitation)
Autonomic nervous system hyperactivity (e.g., tachycardia, hypertension and hyperthermia)
Neuromuscular hyperactivity (e.g., hyperreflexia, tremor and rigidity)

Severe serotonin syndrome is a medical emergency. Severe cases can cause confusion, seizures, severe hyperthermia (over 40°C) and respiratory failure.

Diagnosis is based on the clinical presentation and excluding other causes of the symptoms. Management involves supportive care (e.g., sedation with benzodiazepines) and withdrawal of the causative medications.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Self Harm vs suicide

A

Self-harm involves intentional self-injury without suicidal intent.

DSH can take the form of:
Self-poisoning in the form of overdose - 90%
Self-injury in the form of cutting, burning, slashing - 10%

DSH is more common in females and those aged under 25. It is often a response to emotional distress and acts as a way for the person to cope with their emotions. Self-harm is not always associated with depression, anxiety or suicide, although it does increase the risk of these conditions.

Suicide involves a person causing their own death. Death by suicide is around three times more common in men and most common around the age of 50 years. It also increases in older age.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the cycle of self harm

A

The cycle of self-harm involves the following six repeating steps:

Emotional suffering
Emotional overload
Panic
Self-harming
Temporary relief
Shame and guilt -> emotional suffering.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Suicide risk assessment - 3 parts to assessing someone’s suicide risk

A

Suicidal thoughts range from a passing idea that is quickly dismissed and involves no intention to robust and persistent thoughts with intentions and a plan. They need to be explored in detail to determine the risk and suitable management strategy. They can change over time, so a safety plan and reassessment when required are necessary.

Presenting features that increase the risk of suicide include:

Previous suicidal attempts
Escalating self-harm
Impulsiveness
Hopelessness
Feelings of being a burden
Making plans
Writing a suicide note

Background factors that increase the risk of suicide include:

Mental health conditions
Physical health conditions
History of abuse or trauma
Family history of suicide
Financial difficulties or unemployment
Criminal problems (prisoners have a high rate of suicide)
Lack of social support (e.g., living alone)
Alcohol and drug use
Access to means (e.g., firearms)

Protective factors that may help reduce the risk of suicide include:

Social support and community
Sense of responsibility to others (e.g., children or family)
Resilience, coping and problem-solving skills
Access to mental health support

Me this is different to a general psychiatric risk assessment with risk to self, risk from others, risk to others, neglect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Management of DSH or suicide attempts

A

There is no easy-to-follow guide on this.

Patients may require immediate referral to A&E after a suicide attempt or for physical injuries, overdoses or safety concerns. Once their physical health problems have been managed, they will be seen by the mental health team to decide on further management. This may result in an informal admission to hospital (meaning the patient agrees to the the admission). The Mental Health Act (1983) provides a legal framework for admitting patients to hospital against their wishes for a mental health disorder when required for treatment or safety.

Management considerations for self-harm include:

Treatment of any physical injuries (separate card) - drug detox and suturing wounds.
Empathy, supportive communication and building rapport
Identifying triggers for episodes
Separating the means of self-harm (e.g., removing blades or medications from the environment)
Discussing strategies for avoiding further episodes (e.g., distractions, alternative coping strategies and getting help)
Providing details for support services in a crisis (e.g., mental health services, Samaritans and Shout)
Treating underlying mental health conditions (e.g., depression and anxiety)
Cognitive behavioural therapy
raising any safeguarding concerns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Treatment of an Overdose

Paracetamol
Opioids
Benzodiazepines
Beta Blockers
Cocaine
Carbon Monoxide

others…

A

Generally, the first step when a patient presents with an overdose is to check TOXBASE for recommendations about treating an overdose of almost any substance. They also have a contact number for advice.

Activated charcoal may be given within one hour of overdose of various substances to reduce the absorption (e.g., aspirin, SSRIs, tricyclic antidepressants, antipsychotic drugs, benzodiazepines and quinine).

Paracetamol - N-Acetylcysteine
Opioids - Naloxone
Benzodiazepines- Flumazenil
Beta blockers- Glucagon for heart failure or cardiogenic shock, Atropine for symptomatic bradycardia
Calcium channel blockers - Calcium chloride or calcium gluconate
Cocaine- Diazepam
Cyanide- Dicobalt edetate
Methanol (e.g., solvents or fuels); Ethylene glycol (e.g., antifreeze) - Fomepizole or ethanol (alcohol)
Carbon monoxide - 100% oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is Bipolar Affective disorder?

What is Mania vs Hypomania

A

Bipolar disorder is characterised by recurrent episodes of depression and mania or hypomania. The symptoms often start at a younger age (under 25 years). It has a particularly high rate of suicide.

Depressive episodes feature low mood, anhedonia and low energy and can be severe.

Manic episodes involve excessively elevated mood and energy, significantly impacting their normal functions (e.g., caring and work responsibilities). Me - I think manic episodes last for several weeks, if just a manic day then could be EUPD.

Hypomanic episodes involve milder symptoms of mania without having a significant impact on their function.

Mixed episodes can involve a mix of symptoms or rapid cycling between mania and depression.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Features of Mania

A

Potential features of mania include:

Abnormally elevated mood
Significant irritability
Increased energy
Decreased sleep (sometimes going days without sleeping)
Grandiosity, ambitious plans, excessive spending and risk-taking behaviours
Disinhibition and sexually inappropriate behaviour
Flight of ideas (rapidly generating and jumping between ideas)
Pressured speech (rapid and unrelenting speech)
Psychosis (delusions and hallucinations)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Types of Bipolar Disorder? 4

A

Bipolar I disorder involves at least one episode of mania.

Bipolar II disorder involves at least one episode of major depression and at least one episode of hypomania.

Cyclothymia involves milder symptoms of hypomania and milder low mood. The symptoms are not severe enough to significantly impair their function.

Unipolar depression refers to when the person only has episodes of depression, without hypomania or mania.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Management of an Acute Bipolar Episode - Manic vs Depressive

A

Secondary care specialists should manage acute episodes of bipolar disorder. Patients require a referral for an urgent mental health assessment or hospital admission.

Treatment of an acute manic episode:
- Antipsychotic medications (e.g., olanzapine, quetiapine, risperidone or haloperidol) are first-line
- Other options are lithium and sodium valproate
- Existing antidepressants are tapered and stopped

Treatment of an acute depressive episode:
- Olanzapine plus fluoxetine
- Antipsychotic medications (e.g., olanzapine or quetiapine)
- Lamotrigine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

KEY CARD

Longterm management of bipolar affective disorder?

What monitoring is required?

What are the adverse effects? (key)

A

Lithium is the usual long-term treatment.

Serum lithium levels (taken 12 hours after the most recent dose) are closely monitored to ensure the dose is correct. The usual initial target range is 0.6–0.8 mmol/L. Lithium toxicity can occur if the dose and levels are too high.

Notable potential adverse effects of lithium include:

Fine tremor
Weight gain
Chronic kidney disease
Hypothyroidism and goitre (it inhibits the production of thyroid hormones)
Hyperparathyroidism and hypercalcaemia
Nephrogenic diabetes insipidus

**^ just remeber toxic to renal, thryoid/parathyroid and tremor
**

Nice cks:
- Vomiting and diarhorae
- tremour
- muscle weakness
- hyper-reflexia
- seizsure and syncope
- polyurea and renal failure

Management is supportive and monitoring lithium levels until they return back down to normal range

Alternatives to lithium for long-term treatment include sodium valproate and olanzapine.

Lasting power of attorney and advanced decisions can be helpful, particularly for future episodes of mania where the person’s judgement and decision-making may be impaired, resulting in harmful outcomes (e.g., excessive spending or gambling).

TOM TIP: Sodium valproate is teratogenic. It can cause neural tube defects and developmental delay if used in pregnancy. There are strict rules for avoiding sodium valproate in females with childbearing potential unless there are no suitable alternatives and strict criteria are met. The Valproate Pregnancy Prevention Programme is in place to ensure this happens, which involves ensuring effective contraception and an annual risk acknowledgement form. This has been given much attention over recent years and may be tested in exams.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Define Generalised Anxiety disorder?

GAD vs Panic disorder

Secondary causes of anxiety

A

Generalised anxiety disorder (GAD) is a mental health condition that causes excessive and disproportional anxiety and worry that negatively impacts the person’s everyday activity. Symptoms should be persistent, occurring most days for at least six months, and not caused by substance use or another condition.

Panic disorder involves recurrent panic attacks. The panic attacks are unexpected (they appear randomly, often without a trigger) and result in worry about further attacks and maladaptive behaviour changes relating to the attacks (e.g., avoiding activities).

Me - The form of episodic anxiety disorder is phobia disorder, where episodes are caused by specific triggers

Secondary Causes of anxiety:
Substance use (e.g., caffeine, stimulants, bronchodilators and cocaine)
Substance withdrawal (e.g., alcohol or benzodiazepine withdrawal)
Hyperthyroidism
Phaeochromocytoma
Cushing’s disease - cortisol = stress hormone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Presentation of GAD

A

Emotional and cognitive symptoms of GAD include:

Excessive worrying
Unable to control the worrying
Restlessness
Difficulty relaxing
Easily tired
Difficulty concentrating

Physical symptoms (caused by overactivity of the sympathetic nervous system) include:

Muscle tension
Palpitations (e.g., a feeling of their heart racing)
Sweating
Tremor
Gastrointestinal symptoms (e.g., abdominal pain and diarrhoea)
Headaches
Sleep disturbance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

What are panic attacks, Sx?

A

Panic attacks involve a sudden onset of intense physical and emotional symptoms of anxiety. They come on quickly (within minutes) and last a short time (e.g., 10 minutes) before the symptoms gradually fade. The duration and frequency vary between individuals. Panic attacks are relatively common and do not always indicate a panic disorder.

Physical symptoms include tension, palpitations, tremors, sweating, dry mouth, chest pain, shortness of breath, dizziness and nausea.

Emotional symptoms include feelings of panic, fear, danger, depersonalisation (feeling separated or detached) and loss of control.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What is a phobia?

A

Phobia involves an extreme fear of certain situations or things, causing symptoms of anxiety and panic. There are many types, including fear of animals, heights, pathogens, flying, injections or environments.

Examples of common specific phobias include:

Claustrophobia (fear of closed spaces)
Acrophobia (fear of heights)
Arachnophobia (fear of spiders)
Glossophobia (fear of public speaking)
Trypanophobia (fear of needles)

Agoraphobia is a fear of situations in which they may be unable to escape if something goes wrong. For example, this could be a fear of busy places, public transport, or anywhere outside their home.

Social phobia involves a fear of social situations (also called social anxiety disorder).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Investigations for GAD

A

The Generalised Anxiety Disorder Questionnaire (GAD-7) can help assess the severity. It involves seven questions, each scored depending on how often the symptoms are experienced. The total score indicates the severity:

5-9 indicates mild anxiety
10-14 indicates moderate anxiety
15-21 indicates severe anxiety

Me - also do TFTs for hyperthyroidism, FBC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Management of Generalised Anxiety disorder?

phobia disorder and panic disorder

A

Mild anxiety:
active monitoring and advice about self-help strategies (e.g., meditation), sleep, diet, exercise and avoiding alcohol, caffeine and drugs.

Moderate to severe anxiety may require more intervention. Options include:

Cognitive behavioural therapy
Medication

Medication:
SSRIs (particularly sertraline) are the first-line medication for generalised anxiety disorder and panic disorder.

Other options for generalised anxiety disorder mentioned in the NICE guidelines (2020) are:

SNRIs (e.g., venlafaxine)
Pregabalin

Propranolol is a non-selective beta-blocker often used to treat physical symptoms of anxiety. It helps reduce sympathetic nervous system overactivity, improving symptoms such as palpitations, tremors, and sweating. However, it does not treat the underlying anxiety and only has a short-term effect. The main contraindication is asthma (it can cause bronchoconstriction in asthmatic patients).

Benzodiazepines (e.g., diazepam) work by stimulating GABA receptors (similar to the effects of alcohol). GABA receptors have a relaxing effect on the rest of the brain, giving relief from anxiety. However, prolonged use quickly results in down-regulate GABA receptors, leading to tolerance (reduced effects at the same dose) and dependence (significant withdrawal symptoms on stopping). The NICE guidelines (2020) recommend not offering benzodiazepines for GAD. The exception is using them for a short duration during a crisis, stopping them as soon as possible.

**Panic and Phobia Disorder management - also CBT and Sertraline
**

48
Q

Define PTSD

A

Post-traumatic stress disorder (PTSD) is a relatively common mental health condition resulting from traumatic experiences, with ongoing distressing symptoms and impaired function.

It can affect adults and children of any age. It increases the risk of other mental health conditions, including depression, anxiety, substance misuse and suicide.

Traumatic Events

PTSD can result from any event that the individual finds traumatic. Examples include witnessing or experiencing:

Violence (e.g., sexual assault, domestic violence, abuse or physical attacks)
Major car accidents
Major health events (e.g., traumatic childbirth, serious illness or death of a loved one)
Natural disasters
Military, combat and war zone events

49
Q

PTSD Symptoms

A

he history will contain exposure to one or repeated traumatic events.

Key symptoms include:
Intrusive thoughts relating to the event
Re-experiencing (experiencing flashbacks, images, sensations and nightmares of the event)
Hyperarousal (feeling on edge, irritable and easily startled)
Avoidance of triggers that remind them of the event (e.g., people, places or talking about the event)
Negative emotions (e.g., fear, anger, guilt or worthlessness)
Negative beliefs (e.g., the world is dangerous)
Difficulty with sleep
Depersonalisation (feeling separated or detached)
Derealisation (feeling the world around them is not real)
Emotional numbing (unable to experience feelings)

50
Q

Screening tool for PTSD

A

The Trauma Screening Questionnaire (TSQ) can be used as a screening tool, prompting a referral for further assessment.

Like most anxiety and depressive disorders, the Ix is a questionnaire.

51
Q

Management of PTSD

A

Management is tailored to the individual. Options include:

Psychological therapy (e.g., trauma-focused CBT)
Eye movement desensitisation and reprocessing (EMDR)
Medication (e.g., SSRIs, venlafaxine or antipsychotics)

Eye movement desensitisation and reprocessing (EMDR) involves processing traumatic memories while performing specific eye movements. The theory is that the improperly stored traumatic memories are reprocessed and stored again in a more normal way so that they no longer cause as much negative emotion and distress.

52
Q

Define Obsessions and compulsions

A

Obsessive compulsive disorder (OCD) is characterised by obsessions and compulsions.

Obsessions are unwanted and uncontrolled thoughts and intrusive images that the person finds very difficult to ignore. Examples of this are an overwhelming fear of contamination with dirt or germs or violent or explicit images that keep appearing in their mind.

Compulsions are repetitive actions the person feels they must do, generating anxiety if they are not done. Often, these compulsions are a way for the person to handle their obsessions. For example, they check that all electrical equipment is turned off to settle the anxiety of obsessing about the house burning down. Although this behaviour can be normal and appropriate, a person with OCD may check every plug in the house ten times before being reassured.

The obsessions and compulsions are present daily and are not something the person will enjoy or do willingly. They impact other areas of life, such as their social life or other interests.

There is a cycle in OCD involving:

Obsessions
Anxiety
Compulsion
Temporary relief

The obsessions lead to anxiety, which leads to compulsive behaviours, which leads to a temporary improvement in the anxiety. Shortly after the temporary improvement in anxiety, the obsession reappears, and the cycle reoccurs. Each time, the cycle gets more ingrained in the person’s behaviour. Without completing the compulsions, the person feels no relief from their anxiety about the obsessions.

53
Q

How can the severity of OCD symptoms be scored

A

The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) can be used to assess the severity of symptoms

54
Q

Management of OCD

A

Mild OCD may be managed with education and self-help resources.

More significant OCD may require:

Cognitive behavioural therapy (CBT) with exposure and response prevention (ERP)
SSRIs
**Clomipramine **(a tricyclic antidepressant)

Exposure and response prevention involves gradually facing the obsessive thoughts and anxiety without completing the compulsions.

55
Q

What are Personality disorders

A

Personality disorder covers a variety of maladaptive personality traits that cause significant psychosocial **distress **and interfere with functioning. These traits remain relatively persistent in the person over time and impact their life and relationships.

Personality disorders are characterised by patterns of thought, behaviour and emotion that differ from what is normally expected. It leads to difficult relationships, reduced quality of life and poor physical health.

Personality disorders are thought to result from a combination of genetic and environmental factors. Patients often have a history of early childhood trauma and difficult circumstances. Me - Attachement theory have a poor foundation for healthy relationships and are not taught how to regulate their emotions.

A wide range of symptoms and behaviours occur with personality disorders. The symptoms typically emerge during the teenage or early adult years. Symptoms vary depending on the type and individual.

56
Q

Sx of Boderline Personality disorder

A

possible symptoms in someone with borderline personality disorder include:

Strong and intense emotions (e.g., anger)
Emotional instability (rapidly changing emotions)
Difficulty managing emotions
Difficulty maintaining relationships
Poor sense of identity
Feelings of emptiness
Fear of abandonment
Impulsive and risky behaviour
Recurrent self-harm
Recurrent suicidal behaviours

57
Q

In the DSM-5, personality disoderds fall into what three categories based on their domminant features?

A

There are many different types of personality disorders based on the dominant features. In the DSM-5, they fall into three categories:

Cluster A – Suspicious
Cluster B – Emotional or impulsive
Cluster C – Anxious

ABC SEA - mnemonic

58
Q

types of personality disorder - Define

Paranoid PD
Shizoid PD
Schizotypal PD
Antisocial PD
Boderline PD/EUPD
Histirionic PD
Narcistic PD
Avoidant PD
Dependent PD
OCPD

A

Suspicious Personality Disorders:

Paranoid personality disorder features difficulty in trusting or revealing personal information to others.

Schizoid personality disorder features a lack of interest or desire to form relationships with others and feelings that this is of no benefit to them.

Schizotypal personality disorder features unusual beliefs, thoughts and behaviours, as well as social anxiety that makes forming relationships difficult.

Emotional and Impulsive Personality Disorders

Antisocial personality disorder features reckless and harmful behaviour, with a lack of concern for the consequences or the impact of their behaviour on other people. It often involves criminal misconduct. Includes psychopath (calculated) and sociopath (impulsive)

Borderline personality disorder features fluctuating strong emotions and difficulties with identity and maintaining healthy relationships.

Histrionic personality disorder involves the need to be the centre of attention and performing for others to maintain that attention.

Narcissistic personality disorder features feelings that they are special and need others to recognise this, or else they get upset. They put themselves first. Believe they are better than others

Anxious Personality Disorders

Avoidant personality disorder features severe anxiety about rejection or disapproval and avoidance of social situations or relationships.

Dependent personality disorder features a heavy reliance on others to make decisions and take responsibility for their lives, taking a very passive approach.

Obsessive-compulsive personality disorder features unrealistic expectations of how things should be done by themselves and others and catastrophising about what will happen if these expectations are not met.

If confused the mind page is really useful.

59
Q

Management of personality disorders

A

Management of personality disorder can be challenging. The patterns of thinking and behaviours are deeply ingrained and are difficult to change.

Pyschoeducation - Patient and carer education is very important to help them understand the condition.

Risk management is important, considering short and long-term risks (e.g., ongoing self-harm, suicide and harm to others). Risks are reviewed regularly and managed across the multidisciplinary team. Supportive care is provided during crises to help keep the patient safe.

Psychological treatment is the main treatment:
- CBT
- dialectical behaviour therapy - EUPD developing strategies for managing distress other than self harm

Medications are not recommended for the long-term treatment of personality disorders. Sedative medications (e.g., sedative antihistamines) are sometimes used short-term (e.g., for less than one week) in a crisis. Personality disorders can co-exist with other psychiatric problems (e.g., depression), where medications may be beneficial.

60
Q

What is a dissociative disorder

A

Normally, people experience their consciousness, body, perceptions, memories, identity and emotions as connected and integrated. Dissociative symptoms involve a sense of disruption to how these things fit together. They often occur in response to stress or a traumatic event and can last anywhere from a few minutes to many years. The three types of dissociative disorder are described below (although dissociative symptoms can occur in other conditions, such as borderline personality disorder and post-traumatic stress disorder).

Depersonalisation-derealisation disorder involves depersonalisation, which is a feeling of being separated or outside their body, and derealisation, which is a feeling that the world is not real.

Dissociative amnesia involves forgetting autobiographical information (details about themselves and events that have happened to them), typically following a traumatic experience and leading to gaps in their memory.

Dissociative identity disorder was previously called multiple personality disorder. It involves a lack of a clear individual identity, with multiple separate identities with unique names, personalities and memories. It is often associated with severe stress and trauma in childhood.

61
Q

Define Catatonia

A

Catatonia is a state in which someone is awake but does not seem to respond to other people and their environment. Catatonia can affect someone’s movement, speech and behaviour in many different ways

The most common causes are severe depression and bipolar disorder. It can also occur with psychosis, such as in schizophrenia. Rarely, physical health conditions, such as strokes or brain tumours, can lead to catatonia.

If someone has three or more of these symptoms, they may have catatonia:

Sitting very still and staring into space.
Holding unusual postures which would normally be uncomfortable.
Keeping their arms or legs in whatever position someone else moves them into.
Repeating the same movements for a long time.
Repeating the same movements as another person (known as ‘echopraxia’).
Repeating phrases or words that they hear (known as ‘echolalia’).
Holding strange faces.
Not speaking, eating or drinking.
Doing as they are told or directed without question.
Not doing something, or resisting doing something (known as ‘negativism’).
Becoming suddenly very agitated or restless. This is called ‘excited catatonia’.

62
Q

What is a functional nerological disorder

A

The same as a conversion disorder/somatisation disorders.

Functional neurological disorder involves sensory and motor symptoms that are not explained by any neurological disease and may be caused by underlying psychosocial factors. Symptoms can include weakness, gait disturbance, seizures, sensory loss and vision disturbances. There may be a history of significant trauma or stress. The symptoms are not under the patient’s control (unlike factitious disorder) and can cause considerable distress and functional impairment.

pathophysiology is about the sick roll and dissociationa dn distreaction from stress and emotions.

63
Q

What is a cotard delusion

A

Cotard delusion involves the false belief (delusion) that they are dead or actively dying. It is also known as walking corpse syndrome. It is most often caused by psychiatric conditions, such as depression and schizophrenia, but can be caused by neurological conditions, such as brain tumours and migraines.

64
Q

Define Schizophrenia

Define Schizoaffective disorder

A

Schizophrenia is a severe, long-term mental health disorder characterised by psychosis. It most often presents between ages 15 and 30 and earlier in men than women. The symptoms must be present for at least six months before schizophrenia is diagnosed.

Schizoaffective disorder combines the symptoms of schizophrenia with bipolar disorder. Patients have psychosis and symptoms of depression and mania. Management is similar to schizophrneia but also invovles the use of mood stabalisers long term (Lithium first line and then antiepilecptics).

Schizophreniform disorder presents with the same features as schizophrenia but lasts less than six months.

65
Q

Presentation of Schizophrenia - a big boy

Prodromal phase?
Key positive Sx of psychosis?
Insight?
Key Poisitive Symptoms of schizophrenia
Key negative symptoms of schizophrenia

A

A prodrome phase often precedes the full symptoms of psychosis. During this prodrome phase, the patient may experience subtle symptoms, such as poor memory, reduced concentration, mood swings, suspicion of others, loss of appetite, difficulty sleeping, social withdrawal and decreased motivation.

Psychosis is the central feature of schizophrenia. The key features of psychosis, called positive symptoms, are:

Delusions (beliefs that are strongly held and clearly untrue)
Hallucinations (perceiving things that are not real)
Thought disorder (disorganised thoughts causing abnormal speech and behaviour)

Lack of insight is an important feature of psychosis. They lack awareness that the delusions and hallucinations are not based in reality.

Key positive symptoms that are typical in schizophrenia include:

Auditory hallucinations (hearing voices, particularly a voice narrating the patient’s actions)
Somatic passivity (believing that an external entity is controlling their sensations and actions)
Thought insertion or thought withdrawal (believing that an external entity is inserting or removing their thoughts)
Thought broadcasting (believing that others are overhearing their thoughts)
Persecutory delusions (a false belief that a person or group is going to harm them)
Ideas of reference (a false belief that unconnected events or details in the world directly relate to them)
Delusional perceptions- A delusional perception occurs when the patient experiences an ordinary and unremarkable perception (e.g., a cat crossing the road) that triggers a sudden, often self-related delusion (e.g., “and I knew I would be meeting the aliens on behalf of humanity”).

Negative symptoms of schizophrenia include the four As:

Affective flattening (minimal emotional reaction to emotive subjects or events)
Alogia (“poverty of speech” – reduced speech)
Anhedonia (lack of interest in activities)
Avolition (lack of motivation in working towards goals or completing tasks)

A reduced level of functioning is an important feature. This involves reduced or impaired:

Social engagement
Productivity and achievement at work or school
Self-care

66
Q

Patterns of Psychosis

A

the active-phase symptoms of psychosis may be:

Continuous
Episodic (relapsing and remitting)
A single episode only

67
Q

Diagnosis of schizophrenia

A

A specialist will make the diagnosis based on the DSM-5 criteria. The symptoms (including the prodrome phase) must have been present for at least six months, with symptoms of the active phase (delusions, hallucinations, and thought disorder) present for at least one month (or less if treatment is successful).

Me - Investigations - include urine toxicolgy, ECG for antipsychotic medications….

68
Q

Treatment for Schizophrenia?

A

Treatment involves:

Antipsychotic medications
Cognitive behavioural therapy

A specialist psychiatry service will manage patients with schizophrenia:

Early intervention in psychosis services are available for the first episodes of psychosis
Crisis resolution and home treatment teams provide urgent support for patients in a crisis
Acute hospital admission (under the Mental Health Act when required)
Community mental health team for ongoing monitoring and management

69
Q

Antipsychotic medication:

KEY -Mechanism of action?
Examples?
KEY - Ix before starting antipsycotic medication?
KEY - Side effects -5

A

Mechanism:
Antipsychotic medication work by inhibiting dopamine receptors, specifically D2 receptors.

Examples:
Antipsychotic drugs can be classified as typical or atypical, or as first or second-generation. Neither classification is particularly useful, as they relate more to when they were introduced rather than their mechanism or effects.

Oral antipsychotics include:

Chlorpromazine (typical – first-generation)
Haloperidol (typical – first-generation)
Quetiapine (atypical – second generation)
Aripiprazole (atypical – second generation)
Olanzapine (atypical – second generation)
Risperidone (atypical – second generation)

Depot antipsychotics are given as an intramuscular injection every 2 weeks – 3 months. This can be helpful where adherence may be an issue. Examples include:

Aripiprazole
Flupentixol
Paliperidone
Risperidone

Key Monitoring requirements:
Weight and waist circumference
Blood pressure and pulse rate
Bloods, including HbA1c, lipid profile and prolactin
ECG

Side effects of antipsychotic syndrome include:

Weight gain
Diabetes
Prolonged QT interval
Raised prolactin
Extrapyramidal symptoms

Extrapyramidal side-effects include:

Akathisia (psychomotor restlessness, with an inability to stay still)
Dystonia (abnormal muscle tone, leading to abnormal postures)
Pseudo-parkinsonism (tremor and rigidity, similar to Parkinson’s disease)
Tardive dyskinesia (abnormal movements, particularly affecting the face)

70
Q

What antipsychotic is used for treatment resistant psychosis (2 other antipsychotic drugs have failed)?

Key Side effects

A

Clozapine is used where other treatments do not control the symptoms. It can only be taken by mouth. Clozapine is very effective but comes with significant adverse effects. Patients taking clozapine have very close monitoring for evidence of complications. Key complications include:

Agranulocytosis, with a severely low neutrophil count (predisposing to severe infections)
Myocarditis or cardiomyopathy, which can be fatal
Constipation (rarely to the point of intestinal obstruction)
Seizures
Excessive salivation

71
Q

KEY
What causes Neuroleptic malignant syndrome?

4 key features?

2 key blood testfindings?

Management?

A

Neuroleptic malignant syndrome is a potentially life-threatening complication of antipsychotic treatment. Key features are:

Muscle rigidity
Hyperthermia (raised body temperature)
Altered consciousness
Autonomic dysfunction (e.g., fluctuating blood pressure and tachycardia)

Key blood test findings are:

Raised creatine kinase
Raised white cell count (leukocytosis)

Management involves stopping the causative medications and supportive care (e.g., IV fluids and sedation with benzodiazepines). Severe cases may require treatment with bromocriptine (a dopamine agonist) or dantrolene (a muscle relaxant).

72
Q

Define alcohol dependence

A

5 things!

Alcohol dependence involves:
1. daily alcohol consumption
2. strong urges and cravings for alcohol
3. difficulty controlling consumption - kind of the same
4. tolerance to the effects of alcohol
5. withdrawal symptoms when stopping.

73
Q

How does alcohol dependence affect the brain - mechanism of action?

A

Alcohol is a depressant. It stimulates GABA receptors, which have a relaxing effect on the brain. It also inhibits glutamate receptors (also known as NMDA receptors), causing a further relaxing effect on the electrical activity of the brain (glutamate is an excitatory neurotransmitter).

Long-term alcohol use results in the GABA system becoming down-regulated and the glutamate system becoming up-regulated to balance the effects of alcohol. The patient must continue drinking alcohol, or they will experience unpleasant, uncomfortable and potentially dangerous withdrawal symptoms.

74
Q

How do you calculate the number of alcoholic units in an alcoholic drink?

A

multiple the % alcohol content by the volume in liters!

For 750 mls of 12% wine: 0.75 x 12 = 9 units

This is a common exam question.

75
Q

What is the UK recommended alcohol consumption?

Define Binge drinking?

A

The UK recommendations (Department of Health, updated 2021) on alcohol consumption are:

Not more than 14 units per week
Spread evenly over 3 or more days
Not more than 5 units in a single day

Binge drinking is defined as a single session involving:

6 or more units for women
8 or more units for men

Pregnant women should avoid alcohol altogether. Alcohol in early pregnancy can lead to:

Miscarriage
Small for dates
Preterm delivery
Fetal alcohol syndrome

76
Q

Complications of alcohol excess? - actually a really important card for practice x

A

Alcohol-related liver disease
Cirrhosis and its complications (e.g., oesophageal varices, ascites and hepatocellular carcinoma)
Alcohol dependence and withdrawal
Wernicke-Korsakoff syndrome (WKS)
Pancreatitis
Alcoholic cardiomyopathy
Alcoholic myopathy, with proximal muscle wasting and weakness
Increased risk of cardiovascular disease (e.g., stroke or myocardial infarction)
Increased risk of cancer, particularly breast, mouth and throat cancer

77
Q

How can you screen for alcohol use - 2 ways

A

The official screening test-
The Alcohol Use Disorders Identification Test (AUDIT) was developed by the World Health Organisation to screen for harmful alcohol use. It involves ten questions with multiple-choice answers and gives a score. A score of 8 or more indicates harmful use.

The quick screen - The CAGE questions can be used to screen for harmful alcohol use quickly:

C – CUT DOWN? Do you ever think you should cut down?
A – ANNOYED? Do you get annoyed at others commenting on your drinking?
G – GUILTY? Do you ever feel guilty about drinking?
E – EYE OPENER? Do you ever drink in the morning to help your hangover or nerves?

78
Q

What Blood results can occour with alcohol excess? - specifically the FBC and LFTs, 4 things.

A

Blood results that can occur with alcohol excess include:

Raised mean corpuscular volume (MCV)
Raised alanine transaminase (ALT) and aspartate transferase (AST)
AST:ALT ratio above 1.5 particularly suggests alcohol-related liver disease
Raised gamma-glutamyl transferase (gamma-GT) (particularly notable with alcohol-related liver disease)

79
Q

Timeline of alcohol withdrawal symptoms?

A

Alcohol dependence involves a risk of withdrawal symptoms. These range from mild and uncomfortable to delirium tremens.

Withdrawal symptoms occur at different times after alcohol consumption ceases:

6-12 hours: tremor, sweating, headache, craving and anxiety
12-24 hours: hallucinations
24-48 hours: seizures
24-72 hours: delirium tremens

80
Q

What causes delirium tremens and what are the symptoms?

A

Delirium tremens is a medical emergency associated with alcohol withdrawal. Untreated, the mortality rate is 35%.

Long-term alcohol use results in the GABA system becoming down-regulated and the glutamate system becoming up-regulated to balance the effects of alcohol. When alcohol is removed, the GABA system under-functions and the glutamate system over-functions, causing extreme excitability and excessive adrenergic (adrenaline-related) activity.

Delirium tremens presents with:

Acute confusion
Severe agitation
Delusions and hallucinations
Tremor
Tachycardia
Hypertension
Hyperthermia
Ataxia (difficulties with coordinated movements)
Arrhythmias

81
Q

Management of Alcohol withdrawal - 3 things?

A

The CIWA-Ar (Clinical Institute Withdrawal Assessment for Alcohol, revised) tool can be used to score the patient on their withdrawal symptoms and guide treatment.

Chlordiazepoxide (Librium) is a benzodiazepine used to combat the effects of alcohol withdrawal. Diazepam is a less commonly used alternative. It is given orally as a reducing regime titrated to the required dose based on the local alcohol withdrawal protocol (e.g., 10 – 40 mg every 1 – 4 hours). The dose is reduced over 5-7 days.

High-dose B vitamins (Pabrinex) are given intramuscularly or intravenously, followed by long-term oral thiamine. This is used to prevent Wernicke-Korsakoff syndrome.

82
Q

Management of Alcohol dependence

A

Interventions in the long-term management of alcohol dependence include:

Specialist alcohol service involvement
Alcohol detoxification programme
Oral thiamine to prevent Wernicke-Korsakoff syndrome
Psychological therapy - e.g. CBT
Acamprosate, naltrexone or disulfiram are medications used to help maintain abstinence
Informing the DVLA (their driving licence will be revoked until an extended period of abstinence)

83
Q

What causes Wernicke-Korsakoff Syndrome?

What are the features of each?

What is the management?

A

Alcohol excess leads to thiamine (vitamin B1) deficiency. Thiamine is poorly absorbed in the presence of alcohol. Alcoholics often have poor diets and get many of their calories from alcohol. Thiamine deficiency leads to Wernicke’s encephalopathy and Korsakoff syndrome.

The 3 Features of Wernicke’s encephalopathy include:
Confusion
Nystagmus / Oculomotor disturbances
Ataxia (difficulties with coordinated movements)

Wernicke’s encephalopathy is a medical emergency with a high mortality rate.

Features of Korsakoff syndrome include:
Memory impairment (retrograde and anterograde)
Behavioural changes

Korsakoff syndrome is often irreversible and results in patients requiring full-time institutional care.

Management: Prevention and treatment involve thiamine supplementation and abstaining from alcohol.

REVISION - Delerium tremens is caused by insufficent GABA in alcohol withdrawal and includes tremour, confusion and ataxia, but no nystagmus. WKS shows no tremour and is due to thiamine deficiency in alcohol dependence.

84
Q

What is drug addiction?

A

Drug addiction involves the compulsive use of substances, often leading to harmful physical, psychological and social consequences. There is debate about whether it is a disease or a choice. It is a long-term condition, typically involving relapses after stopping.

85
Q

Tolerance vs Dependence

What causes withdrawal symptoms?

A

Tolerance refers to a loss of effect when taking the same dose. The person may keep increasing the dose to achieve the desired effects. Tolerance occurs with most psychoactive substances over time.

Dependence refers to a physiological and psychological need to keep using a drug. Dependence may occur due to:

Physiological changes (notable with alcohol, opiates and benzodiazepines)
Psychological factors (e.g., cravings and compulsions to use the drug)

Withdrawal symptoms occurs due to physiological adaptations to the drug. For example, benzodiazepines work by stimulating GABA receptors. GABA is an inhibitory neurotransmitter that has a relaxing effect. Long-term use of benzodiazepines results in the body reducing its natural production of GABA to balance the stimulating effects of the drug. When the drug is withdrawn, there is under-activity of the GABA system, causing withdrawal symptoms, such as anxiety, irritability, tremors, insomnia and even seizures.

86
Q

Pathophysiology of addiction - what are processes occouring in the brain involved in drug addiction.

A

The brain has a reward pathway called the mesolimbic pathway. The primary neurotransmitter involved in this pathway is dopamine. The key structures involved in this pathway are the ventral tegmental area, nucleus accumbens, amygdala, and prefrontal cortex. At a very basic level, activation of this pathway by a behaviour provides pleasure and reinforces that behaviour.

Addictive substances or behaviours release dopamine within the mesolimbic pathway, providing a pleasurable reward. Repeated exposure to this stimulus reduces the number and sensitivity of the dopamine receptors in this pathway, requiring an increasingly strong stimulus (e.g., a higher dose or frequency) to produce the same reward. The response to everyday activities reduces (everyday life becomes less rewarding). As a result, the person increasingly seeks out the substance or behaviour to stimulate the reward pathway.

Cues for the substance or behaviour are embedded into the amygdala. People, events, places or objects can act as cues, triggering cravings. Stress is a common trigger, prompting the substance or behaviour as a coping mechanism.

Additionally, changes in the prefrontal cortex occur, leading to impaired function. The prefrontal cortex is responsible for executive functions such as decision-making, assessing risk, and controlling impulses.

87
Q

Basic mechanism of action for:
- opiods
- stimulants- cocaine, NMDA, methamphetamine
- Depressants - alcohol, Benzodiazepens
- Hallucinogens - LSD and Psilcybin
- Cannabis
- Anticonvulsants - Pregabalin and gabapentine
- Nicotine

A

Opioids:
Heroin
Morphine
Oxycodone
Codeine

Stimulates opioid receptors

Stimulants
Cocaine - blocks reuptake of dopamine by the presynaptic membrane
MDMA (ecstasy) - MDMA stimulates the release of serotonin and blocks its reuptake
Methamphetamine - Meth stimulates the release of dopamine and blocks its reuptake

Depressants
Alcohol
Benzodiazepines

Stimulates gamma-aminobutyric acid (GABA) receptors

Hallucinogens
LSD
Psilocybin

Stimulate serotonin receptors, particularly 5-HT2A receptors

Cannabinoids
Cannabis

Stimulates cannabinoid receptors (CB1 and CB2)

Anticonvulsants
Pregabalin
Gabapentin

Blocks voltage-gated calcium channels in the presynaptic membrane, reducing the release of excretory neurotransmitters

Nicotine
Cigarettes
Vapes
Stimulates nicotinic acetylcholine receptors

88
Q

Management of Drug Addiction:

  • General management - Biopsychosocial?
  • 3 Medications for opiod dependece
  • 3 medications for nicotine dependence
A

Management requires a multidisciplinary approach. Specialist drug and alcohol services are available, usually with a self-referral option. Management involves:
Detoxification (may be coordinated at home or as an inpatient)
Medication to help maintain abstinence
Psychological and behavioural therapies (e.g., cognitive behavioural therapy)
Ongoing support (e.g., a recovery coordinator and support groups)

Medication used for opioid dependence include:
Methadone (binds to opioid receptors)
Buprenorphine (binds to opioid receptors)
Naltrexone (helps prevent relapse)

Medication used for nicotine dependence (smoking) include:
Nicotine replacement therapy (e.g., patches, gum or lozenges)
Bupropion
Varenicline

89
Q

What are the 3 key features of autistic spectrum disorder?

Features of ASD?

A

Autistic spectrum disorder (ASD) includes a range of impairments in:
- social interaction
- communication
- behaviour

Autistic spectrum disorder is defined in the DSM-5. It takes previously recognised diagnoses (Asperger’s syndrome, autistic disorder and pervasive developmental disorder) and groups them into one spectrum.

On one end of the autistic spectrum, patients have normal intelligence and the ability to function in everyday life but display difficulties with reading emotions and responding to others. This was previously known as Asperger’s disorder. On the other end, patients can be severely affected and unable to function in typical environments.

Features are usually observable before the age of 3 years.

Deficits in social interaction include:

Lack of eye contact
Delay in smiling
Avoiding physical contact
Unable to read non-verbal cues
Difficulty establishing friendships
Not displaying a desire to share attention (e.g., not playing with others)

Deficits in communication include:

Delay, absence or regression in language development
Lack of appropriate non-verbal communication (e.g., smiling, eye contact, responding to others and sharing interest)
Difficulty with imaginative or imitative behaviour
Repetitive use of words or phrases

Deficits in behaviour include:

Greater interest in objects, numbers or patterns than people
Stereotypical repetitive movements (e.g., self-stimulating movements, such as hand-flapping or rocking)
Intense and deep interests that are persistent and rigid
Repetitive behaviour and fixed routines
Anxiety and distress with experiences outside their regular routine
Extremely restricted food preferences

90
Q

Diagnosis and Management of autism?

A

An autism specialist should make the diagnosis. Diagnosis usually involves assessment by psychiatrists and clinical psychologists. It involves a detailed evaluation of the patient’s current and historical behaviour and communication.

Management

Autistic spectrum disorder is a life-long condition and cannot be cured. Management depends on the severity of the condition. Patients with mild impairments may be highly functioning and not require any formal support.

A multidisciplinary team can help support patients and carers (e.g., parents) with greater impairments. For example, management may involve combined input from:
- specialist education
- occupational therapy
- speech therapy
- CAMHS

NICE recomends against using any drugs for the management of autism, including the use of antipsychotics for challanging behavoir. However, patients with symptoms of depression and/or anxiety may benefit from behavioural and pharmacological intervention (e.g. SSRIs).

In addition, children with sleep difficulties which may benefit from a trial of melatonin if behavioural management/sleep hygiene proved to be unsuccessful.

91
Q

What are the three core featues of ADHD?

Sx?

A

Attention deficit hyperactivity disorder (ADHD) is a neurodevelopment disorder featuring the core features of:
- difficulty maintaining attention
- excessive energy and activity
- impulsivity.

It is more than twice as common in males. It is thought to result from a combination of factors:

Genetic (there is significant heritability)
Pregnancy-related factors (e.g., maternal smoking, premature birth and low birth weight)
Environmental factors

The symptoms start in childhood and should be consistent across settings. When a person displays symptoms only at work or school but is calm and focused at home, this is suggestive of an environmental effect rather than an underlying diagnosis.

All the features of ADHD can be part of a normal spectrum of behaviour. When many of these features are present, and they are adversely affecting the person, ADHD may be considered. Symptoms include:

Short attention span
Easily distracted
Quickly moving from one activity to another
Quickly losing interest in a task
Inability to persist with and complete tasks
Constantly moving or fidgeting
Impulsive behaviour
Disruptive behaviour
Difficulty managing time

92
Q

Diagnosis of ADHD
management of ADHD

A

The Adult ADHD Self-Report Scale (ASRS) can be used as a screening test to support a referral. A specialist will make the diagnosis after a detailed assessment, including a history dating back to childhood.

Management:
Self-management strategies for adults to help manage symptoms include organisation techniques, a healthy diet, exercise, and a sleep routine. Reasonable adjustments to the workplace may be helpful.

Managing strategies for parents - structured routines, physical activity, boundries

Medication is an option after conservative management has failed, or in severe cases. This should be coordinated by a specialist. The medication are central nervous system stimulants. Examples are:

**Methylphenidate
Lisdexamfetamine
Dexamfetamine
Atomoxetine
**

Monitoring requirements whilst taking medications include heart rate, blood pressure, weight and mood changes.

93
Q

What is an eating disorder?

A

Eating disorders are psychiatric conditions involving an unhealthy and distorted obsession with body image and food. The main types are:

Anorexia nervosa
Bulimia nervosa
Binge eating disorder

Eating disorders are more common in females and young people.

94
Q

What is anorexia nervosa?

7 Features?

A

With anorexia nervosa, the person feels they are overweight despite evidence of normal or low body weight. It involves obsessively restricting calorie intake to lose weight. Often, the person exercises excessively and may use diet pills or laxatives to limit the absorption of food.

Features of anorexia nervosa include:

Weight loss (e.g., 15% below expected or BMI less than 17.5)
Amenorrhoea (absent periods)
Lanugo hair (fine, soft hair across most of the body)
Hypotension (low blood pressure)
Hypothermia (low body temperature)
Mood changes, including anxiety and depression
Cardiac complications - below

Amenorrhea (absence of periods) occurs due to disruption of the hypothalamic-pituitary-gonadal axis. There is a lack of gonadotrophins (LH and FSH) from the pituitary, leading to reduced activity of the ovaries (hypogonadism).

Cardiac complications include arrhythmia, cardiac atrophy and sudden cardiac death. Low bone mineral density is another complication.

Anorexia nervosa has the highest mortality of any psychiatric condition.

95
Q

What is bullimia nervosa?

6 Features?

A

Unlike anorexia, people with bulimia often have a normal body weight. Their body weight tends to fluctuate. The condition involves binge eating, followed by purging by inducing vomiting or taking laxatives to prevent the calories from being absorbed.

Features of bulimia nervosa include:

Erosion of teeth
Swollen salivary glands
Mouth ulcers
Gastro-oesophageal reflux
Calluses on the knuckles where they have been scraped across the teeth (called Russell’s sign)

Alkalosis can occur after repeated vomiting of hydrochloric acid from the stomach.

TOM TIP: Unique examination findings in bulimia make it a popular spot diagnosis in exams. A teenage girl with an average body weight that presents with swelling to the face or under the jaw (salivary glands), calluses on the knuckles and alkalosis on a blood gas may indicate bulimia. The presenting complaint may be abdominal pain or reflux.

96
Q

What is binge eating disorder

A

Binge eating disorder is characterised by episodes where the person excessively overeats, often as an expression of underlying psychological distress. The person typically feels a loss of control. It is not a restrictive condition like anorexia or bulimia, and patients are likely to be overweight.

Binges may involve:

A planned binge involving “binge” foods
Eating very quickly
Unrelated to feelings of hunger
Becoming uncomfortably full
Eating in a dazed state

97
Q

Blood results in Eatings disorders?

A

Possible blood test findings in restrictive eating disorders include:

Anaemia (low haemoglobin)
Leucopenia (low white cell count)
Thrombocytopenia (low platelets)
Hypokalaemia (low potassium – due to vomiting or excessive laxatives)

Reduced bone marrow activity causes normocytic normochromic anaemia, leucopenia (with low neutrophils and low lymphocytes) and thrombocytopenia.

98
Q

Management of eating disorders

A

Eating disorders can be challenging to manage and will involve specialist services and a multidisciplinary team. Particularly with anorexia nervosa, the patient may not recognise the need or be motivated to treat the condition.

Management is centred around changing behaviour and addressing environmental factors:

Self-help resources
Psychological therapies (e.g., cognitive behavioural therapy)
Addressing other psychosocial factors, such as depression, anxiety and relationships

Severe cases may require compulsory admission for observed refeeding and monitoring for refeeding syndrome.

99
Q

Eating disorders - what is refeeding syndrome?

3 key electrolytes?

how is it managed?

A

Refeeding syndrome occurs when someone with an extended severe nutritional deficit resumes eating. The lower the BMI and the longer the period of malnutrition, the higher the risk. It should be suspected in anyone with minimal nutritional intake for more than five days.

Mechanism:
During prolonged starvation, intracellular potassium, phosphate and magnesium are depleted. These electrolytes move from inside the cells to the blood to maintain normal serum levels in the absence of dietary intake. Cell metabolism reduces to conserve energy, resulting in a loss of intracellular electrolytes. For example, the action of the sodium/potassium ATP-pump slows, which normally pumps potassium into the cell and sodium out of the cell.

During refeeding, various mechanisms shift magnesium, potassium and phosphate out of the blood and sodium into the blood. Carbohydrate intake causes an increase in insulin, which drives glucose, potassium and phosphate into cells. The sodium/potassium ATP-pump actively pumps potassium into the cells and sodium out of the cells. Insulin causes extra sodium reabsorption in the kidneys. The overall effects are:

Hypomagnesaemia (low serum magnesium)
Hypokalaemia (low serum potassium)
Hypophosphataemia (low serum phosphate)
Fluid overload (due to water following the extra sodium into the extracellular space)

There is a risk of arrhythmia and heart failure. Rarely, it can be fatal.

Management will be according to the local protocol under specialist supervision:

Slowly reintroducing food with limited calories
Magnesium, potassium, phosphate and glucose monitoring
Fluid balance monitoring
ECG monitoring in severe cases
Supplementation with electrolytes and vitamins, particularly B vitamins and thiamine

100
Q

Define Learning disability?

2 most common causes?

A

A state of arrested or incomplete development of the mind, characterised by impaired skills during the developmental period and skills that contribute to the overall level of intelligence.

3 criteria:
- IQ below 70
- onset from birth or early childhood
- functional impairment - e.g. social handicap, ADLs

There are different ranks from mild to profound based on IQ testing.

Can have autism and a LD but they are seperate, autism is about the social and behavoirs from above, LD is about IQ.

Common physical disorders include motor disabilities (e.g. ataxia, spasticity), epilepsy, impaired hearing and/or vision and incontinence (faecal and urinary).

Down’s syndrome: A genetic disorder (trisomy 21) characterized by LD, dysmorphic facial features and multiple structural abnormalities. It is the commonest cause of LD.

Fragile X syndrome is the second most commmon cause of learning disability. It is a X-linked disorder (females get it but less severe) that usually presents with a delay in speech and language development. Other features are:

Intellectual disability
Long, narrow face
Large ears
ADHD
seizures
autism
large testicles after puberty

Prada willi - developmental delay, constant hunger that leads obesity, poor muscle tone hypogonadism, behavoiral problems

Cri du chat: high pitched cat-like cry, small head and learning disability.

101
Q

Psychological therapy (pyschotherapy)

What is the rationale and indications for

CBT, psychodynamic psychotherapy, psychoeducation, councelling, EMDR, DBT.

A

The aim of psychotherapy is to support patients in changing the way that that they interact with and percieve the world, come to terms with past stressors and to cope more effectively with current and future stressors.

Most common forms are cognitive behavoiral therapy and psychodynamic psychotherapy.

CBT - Disorders caused not by life events but by the way the patients views them. The aim of CBT is initially to help individuals to identify and challenge their automatic negative thoughts and then to modify any abnormal underlying core beliefs. The latter is important in reducing risk of relapse. **Used in everything **apart from personality disorders basically, including depression, PTSD, Schizophrenia, eating disorders, anxiety disorders, substance missuse.

Psychodynamic therapies - Rationale that childhood experiences and past unresolved conflicts significantly influence an individuals current situation. Aim - the unconcious is explored using free association (whatever comes to their mind) and the therapist interprets these statements. As the conflicts are epxlored the patient develops insight into how to change their behavoir. Mainly used in depression and boderline PD.

Psychoeducation - delivery of information to help people understand and cope with their mental illness. Used for everything!

Councelling - less complicated, talking through issues with a patient and allowing them find their own solutions to problems, while being supported to do so and being guided by appropriate advice. Used for depression and adverse life events - loss, grief.

Eye movement desensitization and reprocessesing - for PTSD. Helps patient access and process their grief (emotionally resolve)

DBT - used for boderline personality disorder. It is simialr to CBT and aims to provide the individual with alternative coping stragies (rather than deliberate self harm) when gaced with emotional instability.

102
Q

Types of delusional disorders

A

Pyschosis is defined as a mental state with distorted reality. It typically presents with

  1. delusions - false beliefs despite evidence to the contrary and against the normal cultural belief system
  2. hallucinations - perception in the absense of an external stimulus
  3. thought disorder- impaired ability to form thoughts from logically connected ideas.

Schizophrenia - most common, characterised by hallucinations, delusions and thought disorders, in the absence of mood disorder, organic disease of drug induced disorder.

Shizoaffective disorder - symptoms of schizophrenia in the same episode as mood disorder (depression or mania)

Acture and transient psychotic disorders - similar to schizoprenia but lasting <1 month

Persistant delusional disorder - the development of a single or set of delusions for a period of at least 3 months and other areas of thinking are well preserved. De;usions are often persecutory, grandiose or hypochondriacal in nature. Rx with antipsychotics - think of the old jamacan lady x

Induced delusional disorder - a person suffering from pyshcotic episode forms a delusional belief and imposes it on another person

mood disorders with psychosis - psychosis occouring secondary to depression or mania.

Puerperal pyshcosis - 2 weeks after childbirth

103
Q

Phenomonology - types of delusions

A

Fixed false beliefs, which are firmly held despite evidence to the contrary and go against the individual’s normal social and cultural belief system

Grandiose - special powers, choosen by god

persecutory - other people are conspiring against them

reference - objects or events having a special significance to them personally - TV or radio is personal to them

Guilt- done something shameful

hypocondrical - belief of having an illness despite evidence to the contrary

othello syndrome/morbid jealous - convinced that their partner is unfaithful despite lack of evidence.

De Clérambault’s syndrome - someone is in love with them

nihilisic- believe they are worthless or dying. Cotards - believe they are invisible

104
Q

Phenonomonology define obsession vs overvalued ideas

A

Obsessional thoughts: Distressing thoughts that enter the mind despite the patient’s effort to resist them. This is a feature of obsessive–compulsive disorder. ‘Do certain ideas or images keep entering your mind, even when you try to keep them out?’

Preoccupations/overvalued ideas: Strongly held beliefs which are particularly important in four disorders: depressive, anxiety, eating and sexual. Preoccupations differ from obsessions in that they can be put out of the mind with effort, whereas obsessions repeatedly enter the patient’s mind despite their attempted resistance.

105
Q

Thought form - what is:
- loosing of association
- circumstantiality
- neologism
- perseveration

A

Formal thought disorder refers to abnormalities of the way thoughts are linked together:

Loosening of association: Refers to the loss of the normal structure of thinking. This occurs mainly in schizophrenia. There are three types:
(1) Derailment of thought (Knight’s move thinking - unrelated ideas; (2) Tangential thinking: The person diverts from the original train of thought but never returns to it. (3) Word salad: senseless repetition of sounds and phrases.

Circumstantiality: Thinking proceeds slowly with many unnecessary details and digressions, before returning to the original point. This is seen in obsessional personalities and learning disability (LD).

Neologisms: Are words and phrases devised by the patient or a new meaning to an already known word. May be seen in schizophrenia and autism.
Perseveration: Uncontrollable and inappropriate repetition of a particular response, such as a word, phrase, or gesture. This most often occurs in dementia.

106
Q

Mood vs Affect

A

Mood – predominant subjective internal state; e.g. depressed (sad or numb), elated (euphoric or ecstatic), anxious, angry

Affect - immediately expressed , observable; e.g. reactive (normal) flat, blunt ,incongruous

107
Q

Types of hallucination vs pseudohallucinations.

A

Hallucination is a perception in the absence of an external stimulus. It is a common feature of psychosis. Hallucinations may be visual, auditory, olfactory, gustatory or somatic. Auditory hallucinations are the most common in mental health disorders. Visual are more common in organic brain disease and substance missues.

Pseudohallucination: Would include the experience of hearing voices inside your head.
They are not true external hallucinations.

108
Q

What is passivity phenominom

A

‘Do you ever feel that your mood or actions are being controlled by someone or something else?’

One of the first rank sym[ptoms, alongisde third person auditory hallucinations, persecutory delusional perception (true perception attributed with false meaning), thought interference (insertion, withdrawal or broadcasting).

109
Q

What are obsessions and compulsions

A

Obsessions = Distressing thoughts and images that enter the mind despite the patient’s effort to resist them. This is a feature of obsessive–compulsive disorder.

Compulsions = behaviours

110
Q

what is thought alienation

A

Thought alienation : insertion, withdrawal, broadcasting, blocking

111
Q

What is Mild cognitive impairment?

Rx?

A

Mild cognitive impairment (MCI) invovles a deficint in cognition (language, reasoning, visual perception) and memory in individuals who maintain the ability to independently perform most activities of daily living - it is milder than dementia (support not required).

Basically it is congitive impairmenet but with preserved function.

MCI can develop for multiple reasons, and individuals living with MCI may go on to develop dementia (I think about half at 5 years); others will not. For neurodegenerative diseases, MCI can be an early stage of the disease continuum including for Alzheimer’s if the hallmark changes in the brain are present.

There are currently no medicines that are licensed to treat MCI or which reduce the chances of developing dementia.

112
Q

Define Demmentia?

What is early onset demmentia?

How does dementia present in the early and later stages?

A

Dementia is a condition that causes progressive and irreversible impairment in memory, cognition, personality and communication. It is particularly associated with older age.

Early-onset dementia refers to when the symptoms start before aged 65.

Early symptoms of dementia include:

Forgetting events
Forgetting names
Difficult remembering words
Repeatedly asking the same questions
Impaired decision making
Reduced flexibility

As the condition progresses, memory and cognitive impairment worsen. Eventually, patients lose the ability to complete self-care tasks such as cooking, cleaning, and dressing themselves.

Features of advanced dementia include:

Inability to speak or understand speech (aphasia)
Swallowing difficulties (dysphagia), which can lead to aspiration and pneumonia
Appetite and weight loss
Incontinence

Behavioural and psychological symptoms of dementia (BPSD) include:

Depression
Anxiety
Agitation
Aggression
Disinhibition (e.g., sexually inappropriate behaviour)
Hallucinations
Delusions
Sleep disturbance

113
Q

What are the 4 main types of demmentia

A

Alzheimers dementia is the most common type of dementia. The underlying pathophysiology involves brain atrophy, amyloid plaques, reduced cholinergic activity and neuroinflammation.

Vascular dementia is the second most common type. It is caused by vascular damage and impaired blood supply to the brain. Risk factors are the same as other cardiovascular diseases (e.g., hypertension, diabetes and smoking).

Dementia with Lewy bodies is a type of dementia associated with features of Parkinsonism. It causes a progressive cognitive decline. There are associated symptoms of visual hallucinations, delusions, REM sleep disorders and fluctuating consciousness. LEARN THESE SPECIFIC 4 THINGS

Frontotemporal dementia is a rarer type that notably affects people at a younger age (starting aged 40-60). It mainly affects the frontal and temporal lobes. The initial presentation typically involves abnormalities in behaviour, speech and language. It can be familial (inherited). ME- Other cognitive functions (such as memory and perception) may be relatively preserved. LEARN THAT IT AFFECTS BEHAVOIR MORE THAN COGNITIVE PERFORMANCE - APATHY, DISINHIBITION…

114
Q

Differential diagnoses for demmentia (cognitive impairement, memory impairement or personality change)

A

Many conditions can cause cognitive impairment, memory impairment or personality changes.

Medications with an anticholinergic effect, particularly:

Anticholinergic urological drugs (e.g., oxybutynin, solifenacin and tolterodine)
Antihistamines (e.g., chlorphenamine and promethazine)
Tricyclic antidepressants (e.g., amitriptyline)

Psychiatric conditions include:

Depression
Psychosis
Delirium (e.g., secondary to infection)

Neurological conditions include:

Brain tumours (particularly affecting the frontal lobes)
Parkinson’s disease
Huntington’s disease
Progressive supranuclear palsy

Endocrine conditions include:

Hypothyroidism
Adrenal insufficiency
Cushing’s syndrome
Hyperparathyroidism (causing hypercalcaemia)

Nutritional deficiencies include:

Vitamin B12 deficiency
Thiamine deficiency (causing Wernicke-Korsakoff syndrome)

115
Q

Modifiable risk factors for dementia

A

Various lifestyle factors have been shown to significantly reduce the risk of developing dementia:

Exercise
Mental stimulation (e.g., a more mentally challenging job)
Maintaining a healthy weight (obesity increases the risk)
Blood pressure control (hypertension increases the risk)
Blood glucose control (diabetes increase the risk)

116
Q

Ix in demmentia

A

Initial blood tests, required to exclude a physical cause before referring to the memory clinic, include:

Full blood count
Urea and electrolytes
Liver function tests
Inflammatory markers (e.g., CRP and ESR)
Thyroid profile
Calcium
HbA1c
B12 and folate

Also Urinalysis and CXR for lung cancer

**Actual investigations:
- The Addenbrooke’s Cognitive Examination-III (ACE-III) is a detailed and comprehensive assessment tool for memory impairment, typically used by specialist memory services. **

DONT NEED TO KNOW THIS -Five domains are tested:

Attention
Memory
Language
Visuospatial function
Verbal fluency

It is scored out of 100 points. Answering perfectly scores 100. A score of 88 or less is typically considered to indicate possible dementia. Lower scores indicate more severe impairment.

Me - CT head can be used for early onset or where a structural pathology is suspected (it often shows hypocampal atrophy). MRI is better for vascular

117
Q

Demmentia Management

  • 4 KEY DRUGS?
  • Rx for BPSD
A

Alzheimer’s disease has drug options to help improve symptoms:

  • FIRST LINE - Acetylcholinesterase inhibitors (e.g., donepezil, rivastigmine or galantamine)
  • SEVERE ALZHEIMER’S - Memantine, which works by blocking N-methyl-D-aspartic acid (NMDA) receptors

BPSD - first treat cause, modifiy environmental factors, music therapy…

Medication options for managing BPSD are only used where necessary and cause significant side effects. Options include:

SSRI antidepressants for depressive symptoms
Antipsychotic drugs (typically risperidone first-line) - behavoiral symptoms
Benzodiazepines (only for crisis management)

ME
Non-pharmalogical
- Cognitive stimulation therapy
- Group reminiscence therapy
- Cognitive rehabilitation or occupational therapy to support functional ability

Vascular demmentia- target the cardiovascular risk factors.