Psychiatry Flashcards
what is an illusion?
altered perception of a real object
what is a pareidolic illusion?
perceived meaningful images from vague stimulus
what is a delusion?
fixed false belief held despite evidence to the contrary
not explained by patient’s background
what is the most common delusion?
persecutory/paranoid (i.e. being hunted by FBI)
Ekbom’s vs formication
Ekbom’s: belief that one if infected with parasites
Formification: tactile hallucinations
what is capgras syndrome?
believing close acquaintance has been replaced by an imposter
what is Folie a deux?
shared delusions/ hallucinations between people
What is neurosis?
inappropriate emotional/behavioural response to perceived stressor (e.g. phobia, GAD, OCD)
neurotic person never loses touch with reality, has normal mental functioning
what does the MCA cover?
capacity rather than mental health
covers physical health
what is section 4 of the MHA?
emergency admission
72 hour duration
1 doctor, 1 AMHP
what are the discharge applications for section 2?
- NR to MHRT within 14 days
- by responsible clinician
what are the discharge applications for a section 3?
- by patient to MHRT at any time
- by NR to hospital (can be barred by responsible clinician)
- under S17 (leave)
- By RC
what is section 35?
- assessment of a patient accused of committing a crime
- 28 days
- cannot appeal
what is section 37?
- treatment of convicted criminal
- applied for by court if evidence from 2 doctors
- 6 months
- can appeal (within 21 days to court, after 6 months to MHRT)
what is the role of the independent mental health advocates?
- help people find out their rights
- can’t have with sections 4, 5, 135, 136
what is the MOA of atypicals?
blocks D2 and 5-HT2 receptors
what is the MOA of clozapine?
blocks D1 and D4
what do you need to be careful with all antipsychotics?
lower seizure threshold
cause QTc prolongation
what is the most common side effect of clozapine?
constipation
what can increase the concentration of clozapine?
caffeine
what is the monitoring that you need with clozapine?
- weekly FBC for first 18 weeks
- then every 2 weekly until 1 year
- then monthly
what are the side effects of risperidone?
- hyperprolactinaemia (makes pregnancy harder)
- dyslipademia
what are the features of aripiprazole?
- low SE profile
- takes 2 weeks to work orally
- can be given as depot
what is dystonia?
involuntary painful sustained muscle spasm
e.g. oculogyric crisis and torticolis
what is tardive dyskinesia?
rhythmic involuntary movements of mouth/face/limbs/trunk
what is the treatment of dystonia?
anticholinergic e.g. procyclidine
what is the treatment of akathisia?
switch/lower dose
propanolol
BDZ
what is the treatment of the parkinsonism?
increase dose
anticholinergic
what is the treatment of tardive dyskinesia?
switch meds
tetrabenazine
how long does EIS do follow up?
3 years
SSRI SEs?
5 S’s, hyponatraemia, blurred vision
what should SSRIs not be taken with?
- triptans (ask about migraines)
- NSAIDs/aspirin (if need = PPI)
what is important to remember about fluoxetine?
increased half life
what are the side effects of SNRIs?
- increased BP
- headache
- avoid in arrhythmia
what is the MOA of MAOIs?
increase MAO levels
don’t give with SSRIs = serotonin syndrome
e.g. Phenelzine, Selegiline
give an example of a RIMA
moclobemide
what BDZ should you use in hepatic impairment?
oxazepam
describe the withdrawal process from zopiclone/BDZs?
1/8th daily dose reduction every 2 weeks
e. g. diazepam 40mg/day
- dec dose by 5mg every 2 weeks until 20mg/day
- dec dose by 2mg every 2 weeks until 10mg/day
- dec dose by 1mg every 2 weeks until 5mg/day
- dec dose by 0.5mg every 2 weeks until stoped
what are the disadvantages of benzo/Z drugs?
- sedation, confusion, anterograde amnesia, ataxia
- potentiates other CNS depressants (i.e. alcohol)
- tolerance and dependence
what increases the free plasma concentration of benzo/ z drugs?
when given with aspirin or heparin
what is the disadvantage of zopiclone in pregnancy?
cleft lip
what are the MOAs of stimulants?
- potentiate effects of MOA neurotransmitters = increase energy, alertness, euphoria
- increases monoamine pathway activity = increase concentration and learning maturation
give 2 examples of stimulants
methylphenidate
dexamphetamine
what levels cause lithium OD vs toxicity?
OD > 1.2 mmol/L
toxicity > 1.5mmol/L
what are the triggers for lithium OD?
- dehydration
- drugs (NSAIDs, ACEi, ARBs, diuretics, SSRIs)
what is the only anti-epileptic that can be used for acute mania?
sodium valproate
other ones are prophylaxis
what is an important interaction of carbamazepine?
CYP450 inducer
what is a bad side effect of lamotrigine?
SJS
what is the treatment of acute mania relapse in known bipolar patient?
- inc dose of mood stabiliser
- antipsychotic augmentation
- ECT
what are the first line psychotropics in perinatal period?
- sertraline: expressed in breast milk but considered safe
- olanzapine: 1st line, present in breast milk so stop
- avoid mood stabilisers and benzo’s
describe the rigidity in NMS
lead pipe
difference in muscle tone in NMS vs SS
NMS: more rigidity
SS: more hyperreflexia, myoclonus
what is the efficacy rate of ECT?
80%
what do you need to do prior to ECT?
reduce antidepressant dose prior to procedure
how can you describe CBT to a patient?
a way of thinking about your thinking
what is the process of CBT?
- targets thoughts that lead to emotions and behaviours
- especially negative automatic thoughts (NATs)
- thoughts –> emotions –> behaviours
describe the longitudinal method
- detailed Hx including early life
- identify NATs and cognitive distortions
- challenge distortions
- explore core beliefs
what is the psychodynamic psychotherapy?
- problems shaped by childhood experiences and family environment
- causes conflict between conscious and unconscious mind
- therapy helps reveal unconscious mind
what is the aim of psychodynamic psychotherapy?
deep seated change in personality and emotional development
what is the difference between psychoanalytic vs psychodynamics?
psychoanalytics = internal conflicts psychodynamic = inter-personal conflicts
describe delirium
- mental status change
- quick onset
- disorientated
- inattention
- change from baseline
why do anticholinergics worsen delirium?
cholinergic neurones impacted by delirium and are underactive so anticholinergics worsen it
what is important to exclude in derilium?
undiagnosed dementia
treatment of delirium
PO antipsychotics
1st line = Haloperidol
what is important to remember for rapid tranquilisation?
- follow local protocol
- do not give haloperidol to patients with cardiac disease/DLB/Parkinsons
depression SIGECAPS mnemonic
Sleep changes Interest Loss Guilt (worthlessness) Energy loss (fatigue) Cognition/concentration difficulties Appetite Loss +/- weight loss Psychomotor (agitation) Suicidal ideation
what is subthreshold depression?
<2 core symptoms
no functional impairment
what is mild depression?
2 and 2 other symptoms
still can continue with most activities
what is moderate depression?
2 core symptoms + 3 others
considerable functional impairment
what is severe depression?
- 3 core symptoms and 4 others
- major impact
what are some organic causes of depression?
anaemia
thyroid
diabetes
hypercalcaemia
management of children depression
- self help “youngminds.org”
- mild = IAPT 6-8 sessions, psychoeducation
- 2nd line: CBT
- needs not met = referral to CAMHS
what are the different low intensity psychosocial interventions for depression?
- group CBT
- computerised CBT
- guided self help
- structured group physical activity programme
over how long is sertraline increased?
over 6 weeks
what is the catch up phenomena?
if someone recovers from depression and then medication is suddenly stopped, if they experience depression again, then they will be in a worse state
what are the complications of paroxetine in pregnancy?
1st: congenital heart defects
3rd: persistent pulmonary HTN
what are the characteristics of hypomania?
> 3 characteristics lasting 4+ days
no functional impact
what is the treatment of rapid cycling BPAD?
sodium valproate
what if there is depression co-existent with mania?
can’t use anti-depressants alone
give with mood stabiliser or anti-psychotic
what is the use of CBT in BPAD?
- sense of perspective
- identify release indications
- relapse prevention strategies
what are the types of schizophrenia?
- paranoid
- hebephrenic (incoherent/irrelevant speech)
- catatonic (psychomotor disturbance)
- simple (negative symptoms, apathy, social withdrawal)
how long do the symptoms of schizophrenia need to last for?
present most of the time for more than 1 month
what ratings/assessments need to be done in Schizophrenia?
Brief Psychiatric Rating Scale
ADL assessment and Housing and Finance
Schizophrenia Bio-Psycho-Social management
Bio: aripiprazole (low dose)/olanzapine + education/support
trial for 6 weeks before change
Psych: CBT - reality testing, family therapy
Social: social skills training, education, benefits, housing
what could you use in non compliance?
zuclopenthixol depot
what is the DSM-V definition of schizoaffective disorder?
- Psychotic state (>2 weeks) without concurrent affective symptoms
- 2 episodes of psychosis: 1 episode lasting >2w without mood disorder symptoms, 1 episode requires overlap of mood/psychosis sx
how do you treat schizoaffective disorder?
treat as per schizophrenia
add mood stabiliser if affective component not being controlled
what is delusional disorder?
persistent life long delusions with few/no hallucinations
<3 months = temporary
>3 months = persistent
if you have delusional disorder, what cannot you have?
- auditory hallucinations
- schizophrenic symptoms
- evidence of organic disease
what are the RFs for delusional disorder?
- old age
- substance abuse
- social isolation
- premorbid personality disorder
- head injury
what are examples of delusional disorders?
- erotomania
- othello syndrome
- fregoli syndrome
- factitious disorder
- folie a deux
what is the treatment of delusional disorder?
- limited evidence for drugs
- BDZ for anxiety
- Psych: CBT, psychoeducation
- Social: social skills training
what neurotransmitters are underactive in anxiety disorders?
serotonin
NA
GABA
what should you ask about in anxiety? (SEDATED)
Symptoms of anxiety Episodic or continuous Drink and drugs Avoidance and escape Timings and triggers Effect on life Depression
what are the different anxiety rating scales?
- Beck Anxiety Inventory
- HADS
- GAD-7
what do the different scores in GAD mean?
- mild = 5
- moderate = 10
- severe = 15
what are the criteria for a GAD diagnosis?
3+ symptoms for more than 6 months