Psychiatry Flashcards
What are the three classes of personality disorder?
A - odd (paranoid, schizoid)
B - dramatic (histrionic, emotionally unstable, dissocial)
C - anankastic, dependent, anxious
List which antidepressants are associated with the following risks: • Drug Interaction • Discontinuation Symptoms • Death from Overdose • Overdose • Stopping treatment due to side-effects • Blood Pressure Monitoring Needed • Worsening Hypertension • Postural Hypotension and Arrhythmia
- Drug Interaction: fluoxetine, fluvoxamine, paroxetine
- Discontinuation Symptoms: paroxetine
- Death from Overdose: venlafaxine
- Overdose: TCAs (except lofepramine)
- Stopping treatment due to side-effects: venlafaxine, duloxetine, TCAs
- Blood Pressure Monitoring Needed: venlafaxine
- Worsening Hypertension: venlafaxine, duloxetine
- Postural Hypotension and Arrhythmia: TCA
How often should a patient with newly diagnosed depression be followed-up after starting an antidepressant?
Review after 2 weeks (if no particular risk of suicide), then every 2-4 weeks thereafter for 3 months
Which low-intensity psychotherapies may be offered to patient with mild-to-moderate depression?
Individual-guided self-help based on the principles of CBT
Computerised CBT
Structured group physical activity programme
Who should be offered group CBT?
Individuals with mild-to-moderate depression who decline low intensity psychological therapies
Which high-intensity psychological therapies may be offered to patients with moderate-to-severe depression?
Individual CBT
Interpersonal Therapy
Transitions between which antidepressants must you be particularly careful with?
From fluoxetine to other antidepressants (as fluoxetine has a long half-life)
From fluoxetine or paroxetine to a TCA (both drugs inhibit TCA metabolism so a lower starting dose may be needed)
To a new serotoninergic antidepressant or MAOI (because of risk of serotonin syndrome)
From non-reversible MAOI: a 2-week washout period is required (other antidepressants should not be prescribed during this period)
Briefly outline the step by step pharmacological management for depression.
STEP 1: SSRI (e.g. sertraline)
STEP 2: Taper down SSRI, start SNRI (e.g. venlafaxine)
STEP 3: Add augmentation - either atypical antipsychotics (e.g. quetiapine) or another antidepressant (e.g. mirtazapine)
STEP 4: ECT
Over what period of time should antidepressants be stopped?
4 weeks
What needs to be monitored after a patient is started on lithium and how regularly should this happen?
Lithium levels - at 1 week after starting, then weekly until therapeutic level is reached. Then every 3 months (12 hours post dose).
U&E - every 3 months
TFTs - every 6 months
Creatinine clearance - annually
Which mood stabiliser does not need monitoring of drug levels?
Sodium valproate
How soon after an episode of self-harm should the patient be followed-up?
1 week
This can be in outpatient clinic, CMHT, GP or counsellor
Which psychological therapies for patients who have self-harmed?
CBT
Mentalisation-based therapy
Transference-focused psychotherapy
What are some coping strategies that can be used for patients with thoughts of self-harm?
Distraction techniques
Mood-raising activities (e.g. exercise)
Prevention of self-harm (put tablets and sharp objects away, stay in public places with supportive people, call a friend/support line, avoid drugs and alcohol)
Which service should be involved in the care of a young person with first episode psychosis?
Early intervention service (EIS)
Which receptors are blocked by typical and atypical antipsychotics?
Typical = dopamine (D2) Atypical = dopamine and 5HT2
Which antipsychotics are particularly associated with weight gain?
Olanzapine and clozapine
What is the main aim of CBT in schizophrenia?
Emphasis on reality testing
Encourage the patient to think about evidence and alternative explanations
Which forms of psychological therapy may be useful in schizophrenia?
CBT (for all patients)
Family therapy (particularly useful if high expressed emotion)
Concordance therapy
Which social aspects of a patient with schizophrenia require management?
Social skill training Education, training and employment Skills (e.g. cooking, budgeting) Housing Accessing social activities Developing personal skills (e.g. creative writing)
What is treatment resistance schizophrenia?
Failure to respond to two or more antipsychotics, at least one of which is atypical, each given at a therapeutic dose for at least 6 weeks
How is schizoaffective disorder treated?
Same treatment as schizophrenia
You may add a mood stabiliser or antidepressant for the affective component
Which investigations are used in neuroleptic malignant syndrome?
CK (high)
WCC (high)
How is neuroleptic malignant syndrome managed?
Stop antipsychotics immediately
Get urgent medical treatment (usually ITU)
Treat hyperthermia (cooling blankets, ice packs)
Dantrolene may be used for muscle rigidity
Benzodiazepines may be necessary for agitation
High myoglobin can cause AKI (IV fluids and dialysis may be required)