Psychiatry Flashcards
How could you screen for depression?
The following two questions can be used to screen for depression
‘During the last month, have you often been bothered by feeling down, depressed or hopeless?’
‘During the last month, have you often been bothered by having little interest or pleasure in doing things?’
A ‘yes’ answer to either of the above should prompt a more in depth assessment.
which two tools can be used to assess depression?
HAD
PHQ
HAD
-How many questions?
-how is this scored?
Hospital Anxiety and Depression (HAD) scale
consists of 14 questions, 7 for anxiety and 7 for depression
each item is scored from 0-3
produces a score out of 21 for both anxiety and depression
severity: 0-7 normal, 8-10 borderline, 11+ case
patients should be encouraged to answer the questions quickly
PHQ-9
-How does this work?
-how many items?
-what does this include?
Patient Health Questionnaire (PHQ-9)
asks patients ‘over the last 2 weeks, how often have you been bothered by any of the following problems?’
9 items which can then be scored 0-3
includes items asking about thoughts of self-harm
How is depression grouped? How does NICE categorise?
Traditionally, depression severity has been grouped under 4 categories (subthreshold, mild, moderate and severe). The updated NICE guideline uses a simpler 2 category definition of depression: less severe or more severe depression.
Less severe depression encompasses subthreshold and mild depression, and more severe depression encompasses moderate and severe depression. Thresholds on validated scales were used in this guideline as an indicator of severity
a score < 16 on the PHQ-9: less severe depression
a score of ≥ 16 on the PHQ-9: severe depression
The DSM-5 also provides criteria for diagnosing major depressive disorder (MDD), commonly referred to as depression.
Describe DSM 5 criteria for major depressive disorder
Five (or more) of the following symptoms have been present during the same 2-week period and represent a change from previous functioning; at least one of the symptoms is either (1) depressed mood or (2) loss of interest or pleasure.
Depressed mood most of the day, nearly every day, as indicated by either subjective report (e.g., feels sad, empty, hopeless) or observation made by others (e.g., appears tearful). (Note: In children and adolescents, can be irritable mood.)
Markedly diminished interest or pleasure in all, or almost all, activities most of the day, nearly every day (as indicated by either subjective account or observation).
Significant weight loss when not dieting or weight gain (e.g., a change of more than 5% of body weight in a month), or decrease or increase in appetite nearly every day. (Note: In children, consider failure to make expected weight gain.)
Insomnia or hypersomnia nearly every day.
Psychomotor agitation or retardation nearly every day (observable by others, not merely subjective feelings of restlessness or being slowed down).
Fatigue or loss of energy nearly every day.
Feelings of worthlessness or excessive or inappropriate guilt (which may be delusional) nearly every day (not merely self-reproach or guilt about being sick).
Diminished ability to think or concentrate, or indecisiveness, nearly every day (either by subjective account or as observed by others).
Recurrent thoughts of death (not just fear of dying), recurrent suicidal ideation without a specific plan, or a suicide attempt or a specific plan for committing suicide.
Give treatment options for less severe depression
Treatment options, listed in order of preference by NICE
-guided self-help
-group cognitive behavioural therapy (CBT)
-group behavioural activation (BA)
-individual CBT
-individual BA
-group exercise
-group mindfulness and meditation
-interpersonal psychotherapy (IPT)
-selective serotonin reuptake inhibitors (SSRIs)
-counselling
-short-term psychodynamic psychotherapy (STPP)
Give treatment options of more severe depression
Treatment options, listed in order of preference by NICE
-a combination of individual cognitive behavioural therapy (CBT) and an antidepressant
-individual CBT
-individual behavioural activation (BA)
-antidepressant medication
selective serotonin reuptake inhibitor (SSRI), or
serotonin-norepinephrine reuptake inhibitor (SNRI), or
another antidepressant if indicated based on previous clinical and treatment history
-individual problem-solving
-counselling
-short-term psychodynamic psychotherapy (STPP)
-interpersonal psychotherapy (IPT)
-guided self-help
-group exercise
How do you switch from citalopram, escitalopram, sertraline or paroxetine to another SSRI?
Switching from citalopram, escitalopram, sertraline, or paroxetine to another SSRI
the first SSRI should be withdrawn* before the alternative SSRI is started
How do you switch from fluoxetine to another SSRI?
Switching from fluoxetine to another SSRI
withdraw then leave a gap of 4-7 days (as it has a long half-life) before starting a low-dose of the alternative SSRI
How do you switch fro an SSRI to a tricyclic antidepressant?
Switching from a SSRI to a tricyclic antidepressant (TCA)
cross-tapering is recommend (the current drug dose is reduced slowly, whilst the dose of the new drug is increased slowly)
- an exceptions is fluoxetine which should be withdrawn prior to TCAs being started
How do you switch from citalopram, escitalopram, sertraline or paroxetine to venlafaxine?
Switching from citalopram, escitalopram, sertraline, or paroxetine to venlafaxine
cross-taper cautiously. Start venlafaxine 37.5 mg daily and increase very slowly
Depression in older people:
What are the features?
What is the management
Older patients are less likely to complain of depressed mood
Features
physical complaints (e.g. hypochondriasis)
agitation
insomnia
Management
SSRIs are first line (adverse side-effect profile of TCAs more of an issue in the elderly)
ECT
-what is this used for?
-Give 5 short term side effects
-Give 1 long term side effect
Electroconvulsive therapy is a useful treatment option for patients with severe depression refractory to medication (e.g. catatonia) those with psychotic symptoms. The only absolute contraindications is raised intracranial pressure.
Short-term side-effects
headache
nausea
short term memory impairment
memory loss of events prior to ECT
cardiac arrhythmia
Long-term side-effects
some patients report impaired memory
Give 8 risk factors for suicide
Whilst the evidence base is relatively weak, there are a number of factors shown to be associated with an increased risk of suicide
-male sex (hazard ratio (HR) approximately 2.0)
-history of deliberate self-harm (HR 1.7)
-alcohol or drug misuse (HR 1.6)
-history of mental illness: depression
schizophrenia: NICE estimates that 10% of people with schizophrenia will complete suicide
-history of chronic disease
-advancing age
-unemployment or social isolation/living alone
-being unmarried, divorced or widowed
Give 5 risk factors for completing suicide at a future date if have already attempted suicide
If a patient has actually attempted suicide, there are a number of factors associated with an increased risk of completed suicide at a future date:
-efforts to avoid discovery
-planning
-leaving a written note
-final acts such as sorting out finances
-violent method
Give 3 protective factors for suicide
There are, of course, factors which reduce the risk of a patient committing suicide. These include
family support
having children at home
religious belief
SSRIs
-Which 2 are the preferred SSRIs
-Which SSRI is used post-MI
-Which SSRI is used in young people
Selective serotonin reuptake inhibitors (SSRIs) are considered first-line treatment for the majority of patients with depression.
citalopram (although see below re: QT interval) and fluoxetine are currently the preferred SSRIs
sertraline is useful post myocardial infarction as there is more evidence for its safe use in this situation than other antidepressants
SSRIs should be used with caution in children and adolescents. Fluoxetine is the drug of choice when an antidepressant is indicated
Give 4 adverse effects of SSRIs
Adverse effects
-gastrointestinal symptoms are the most common side-effect
-there is an increased risk of gastrointestinal bleeding in patients taking SSRIs. A proton pump inhibitor should be prescribed if a patient is also taking a NSAID
-patients should be counselled to be vigilant for increased anxiety and agitation after starting a SSRI
-fluoxetine and paroxetine have a higher propensity for drug interactions
Citalopram and the QT interval - who should this not be used in? what is the maximum daily dose?
Citalopram and the QT interval
-the Medicines and Healthcare products Regulatory Agency (MHRA) released a warning on the use of citalopram in 2011
it advised that citalopram and escitalopram are associated with dose-dependent QT interval prolongation and should not be used in those with: congenital long QT syndrome; known pre-existing QT interval prolongation; or in combination with other medicines that prolong the QT interval
-the maximum daily dose is now 40 mg for adults; 20 mg for patients older than 65 years; and 20 mg for those with hepatic impairment
Give 5 drug interactions with sSRIS
Interactions
-NSAIDs: NICE guidelines advise ‘do not normally offer SSRIs’, but if given co-prescribe a proton pump inhibitor
-warfarin / heparin: NICE guidelines recommend avoiding SSRIs and considering mirtazapine
-aspirin
-triptans - increased risk of serotonin syndrome
-monoamine oxidase inhibitors (MAOIs) - increased risk of serotonin syndrome
Following initiation when should patient be followed up? How are SSRIs stopped?
Following the initiation of antidepressant therapy patients should normally be reviewed by a doctor after 2 weeks. For patients under the age of 25 years or at increased risk of suicide should be reviewed after 1 week. If a patient makes a good response to antidepressant therapy they should continue on treatment for at least 6 months after remission as this reduces the risk of relapse.
When stopping a SSRI the dose should be gradually reduced over a 4 week period (this is not necessary with fluoxetine). Paroxetine has a higher incidence of discontinuation symptoms.
Give 7 discontinuation symptoms of SSRIS
Discontinuation symptoms
-increased mood change
-restlessness
-difficulty sleeping
-unsteadiness
-sweating
-gastrointestinal symptoms: pain, cramping, diarrhoea, vomiting
-paraesthesia
What are the risks of SSRIS in pregnancy?
SSRIs and pregnancy
- BNF says to weigh up benefits and risk when deciding whether to use in pregnancy.
- Use during the first trimester gives a small increased risk of congenital heart defects
- Use during the third trimester can result in persistent pulmonary hypertension of the newborn
- Paroxetine has an increased risk of congenital malformations, particularly in the first trimester