Depression and suicide risk Flashcards
What is the ICD-10 criteria?
Over a 2-week period: Key symptoms (must have at least 2)
3 CORE SYMPTOMS:
- Persistent low mood
- Loss of interest or pleasure
- Fatigue or low energy
If any of above, then ask about:
- Disturbed sleep
- Poor concentration or indecisiveness
- Low self confidence
- Poor or increased appetite
Suicidal thoughts or acts - Agitation or slowing of movement
- Guilt or self blame
Episode severity:
4 symptoms = mild
5-6 symptoms = moderate
7+ symptoms = severe (+/- psychotic symptoms)
What is the DSM-5 criteria?
Five or mroe of the following over a 2 week period (must have one of *)
- Depressed mood*
- Markedly diminished interest or pleasure in all activities*
- Poor or increased appetite
- Insomnia or hypersomnia
- Psychomotor agitation or retardation
- Fatigue or loss of energy
- Feelings of worthlessness or inappropriate guilt
- Diminished ability to think or concentrate
- Recurrent thoughts of death or suicide
Must result in clinically significant distress or impairment of functioning.
What is minor depression, according to DSM-5?
- Sub-threshold depression (minor depression)
Significant depressive symptoms below the DSM-5 MDD threshold of 5 symptoms, including ICD-10 mild depressive episode with only 4 symptoms
What is a mild-major depressive episode, according to DSM-5?
- Mild-major depressive episode (mild MDE)
Few symptoms beyond the minimum of five and mild functional impairment
What is a moderate MDE, according to DSM-5?
- Moderate MDE
More than the minimum number of symptoms and moderate functional impairment
What is a severe MDE, according to DSM-5?
- Severe MDE
Most symptoms are present and parked or greater functional impairment
What is the grading for episode severity according to ICD-10?
At least 2/3 key symptoms
Episode severity:
4 symptoms = mild
5-6 symptoms = moderate
7+ symptoms = severe (+/- psychotic symptoms)
What additional information should you request in a patient history regarding a depressive episode?
- Ask with regards to manic or hypomanic episodes in the past
- Ask about recent bereavement or loss
- Many symptoms of depression are normal signs of a bereavement reaction
- Does the patient suffer from any medical disorders that can cause depression? ex:
1. Chronic pain
2. Hypothyroidism
3. Addison’s disease
4. Multiple Sclerosis
5. Diabetes Mellitus
6. CVD
7. Drug or substance abuse
Ask about medications - some increase the risk of developing depression:
- Corticosteroids
- Beta blockers
- Statins
- Oral contraceptives (especially progestogens)
- Isotretinoin
- Ask about drug and alcohol abuse, as this can lead to/exacerbate depressive symptoms
Which initial investigations should be performed on a patient with a depressive episode?
- Full history and mental state exam
- BP and pulse
- BMI
- ECG
- FBC, U&Es, LFTs, TFTs, HbA1c
The above are useful for obtaining a baseline, which will be checked following starting medication.
The bloods will help rule out medical conditions, check for renal or hepatic impairment: increased risk of mood disorders and must be treated
SSRIs and antipsychotics can cause a prolonged QT interval so an ECG is necessary.
What are the common side-effects of sertraline?
- Gastrointestinal upset
- Dry mouth
- Drowsiness
- Mild nausea
- Decreased sex drive, impotence, or difficulty having an orgasm
What are the less common side-effects of sertraline?
- Urinary incontinence
- Urinary retention
- Weight gain
- Palpitations
- Tremor
How long should a patient remain on an antidepressant?
At a moderately severe level, at least a year, and be regularly reviewed
If a patient still has residual depressive symptoms it would be worth considering a change of treatment in order to resolve the symptoms
Management plans should also include CBT.
How long do antidepressants take to kick in?
A delay of 3-6 weeks after a therapeutic dose is achieved before symptoms improve
Continue for at least 6 months after recovery
When should you change antidepressants?
If not improvement is seen after a trial of at least 2 months with an adequate dose, switch to another antidepressant or add another agent in.
What are the side effects of tricyclic antidepressants?
- Lower seizure threshold
- Cardiotoxic (prolongs QTc)
- Lethal in overdose
Anticholinergic effects
- Dry mouth
- Blurred vision
- Urinary retention
- Confusion
- Cognitive/memory problems
Antiadrinergic effects
- Postural hypotension
- Sexual dysfunction
- Tachycardia
Antihistamine effects
- Sedation
- Weight gain