Psychiatry Flashcards
Ways of assessing alcoholism
- CAGE (>2 problem)
- AUDIT (10 questions)
- TWEAK (tolerance, worried, eye opener, amnesia, cut down)
- FAST (4 questions - used in A+E)
Alcohol limits
women and men max = 14 units/week
Binge drinking = 10 units/day
Dangerous = 50 units/week
Investigations for chronic alcoholism
- raised MCV / macrocytic anaemia
- deranged LFTs
- Thrombocytopenia (low plts)
- breath test + screening
How would you manage alcohol DEPENDENCE?
- Acamprosate - reduce cravings
- Disulfiram - hangover if alcohol consumed
- Naltrexone - less pleasure from alcohol
Symptoms of alcohol withdrawal
tremors / sweating / vomiting
sleep and mood disturbance
autonomic hyperactivity - tachycardia, HTN, pyrexia
SEZIURES AT 36 HOURS
When does delirium tremens occur and what are the symptoms?
- day 3 of alcohol withdrawal*
- altered consciousness and cognitive impairment
- hallucinations and paranoid delusions
- Lilliputian and formication
- tremor
- autonomic arousal
Acute management of alcohol withdrawal
- Chlordiazepoxide
- IV pabrinex - B12 replacement
- Thiamine 100mg BD
- BDZ if delirium
What is Wernicke’s encephalopathy?
Acute brain damage due to thiamine deficiency. Triad: 1. Delirium 2. Ocular signs 3. Wide based gait ataxia Tx = IV Pabrinex + chlordiazepoxide
What is Korsakoff’s syndrome?
Brain damage due to chronic thiamine deficiency.
Triad:
1. Anterograde amnesia
2. Confabulation
3. Psychosis (Lilliputian, formication)
Tx = IV pabrinex + chlordiazepoxide (same as wernicke’s)
Signs of opioid intoxication
drowsiness mood change bradycardia, HTN pupillary constriction respiratory depression low body temp
Complications of opioid misuse
- needle sharing –> HIV, hepatitis B/C
- infections
- VTE
- Overdose
- psychosocial problems
Management of opioid toxicity / dependence
Acute toxicity = IV/IM Naloxone
Detoxification = 4 weeks residential or 12 weeks community:
- Methadone or Buprenorphrine
Common causes of delirium (PINCH ME)
Pain Infection / intoxification Nutrition (low thiamine, B12..) Constipation Hypoxia . hydration Medication / drugs Environmental
Other - post op, vascular, trauma, metabolic
3 common syndromes of delirium:
- Hypoactive - quiet confusion
- Hyperactive - agitation, delusions
- Mixed
Management of delirium
- Identify + treat cause
- orientate / aids
- sedation - Haloperidol, Olanzapine
- MMSE + review
Management of aggressive patient
- environmental
- behavioural
- Oral lorazepam 1-2mg
- IM lorazepam 1-2mg
- repeat every 45-60 mins
What is generalised anxiety disorder (GAD)
Persistent anxiety not isolated to specific environments.
Excessive worry about every day things (>6 months or less in children)
Risk factors for GAD
Aged 35-54
Female
Single or single parent
Protective factors = cohabitation, aged 16-24
Causes of GAD
Stressful event Neurobiological: - loss of cortisol regulation - reduced expression of BDZ receptors due to high cortisol - Issues with amygdala
Diagnosing GAD (1)
3 clinical features:
- restlessness
- irritability
- fatigue
- difficulty concentration
- muscle tension
- sleep disturbance
Diagnosing GAD (2)
+ 4 other symptoms:
- Autonomic
- abdo/chest
- general
- mental state
- non-specific
GAD management
- Self-help
- CBT, applied relaxation
- Sertraline
- Clomipramine / another SSRI
BDZ = Rapid response
What is panic disorder?
Recurrent panic attacks not secondary to substance misuse or another disorder
Risk factors for panic disorder
Peak onset - 15-24 + 45-54yrs
Risk factors - single, living in city, limited education, early parental loss, physical or sexual abuse
Management of panic disorder
- Self-help
- CBT
- Sertraline /SSRI
- Clomipramine
What are the 3 main types of phobia?
Agoraphobia - panic in places where escape is difficult
Simple phobia - specific object or situation
Social - social situations, suicidal thoughts common
Agoraphobia treatment
Behavioural = exposure + relaxation
Cognitive = education + coping
1st line = sertraline
Short term = BDZ
Simple / specifc phobia treatment
Behavioural = exposure and relaxation
Cognitive = education + coping
BDZs only to enable exposure therapy
Social phobia treatment
- Self-help
- CBT, Graded exposure therapy
- Sertraline
- PRN propanolol
- MAOI
short term BDZ?
What is OCD
Obsessions = recognised as patients own thoughts - death, sex, blasphemous Compulsions = repetitive behaviours or mental acts
OCD treatment
- Self-help
- CBT and exposure and response prevention (ERP)
- SSRI - Fluoxetine or sertraline
- Clomipramine - specific non-obsessional action
Risk factors for PTSD
low education / social class Female Black / hispanic FHx of psych conditions Previous traumatic events
The 4 clinical features of PTSD
- Re-experiencing
- Avoidance
- Hyperarousal (startle response)
- Emotional numbing (detached)
ICD-10 for PTSD
- Symptoms arise within 6 months of event
- symptoms present for at least 1 month with significant distress
PTSD treatment
- Watchful waiting if <4 weeks since trauma
- CBT or EMDR if >4 weeks since trauma
- Paroxetine or Mirtazapine
- BDZ for sleep disturbance
- ?antipsychotics
Diagnostic criteria for Anorexia
Weight <85% predicted
BMI <17.5
Fear of weight gain
Feel fat when underweight
Signs of anorexia
General - fatigue, cold intolerance, altered sleep cycle
Repro - subfertility, amenorrhoea, failed 2nd sex characteristics
CV - brady, low BP, long QT
Derm - lanugo hair, yellow tinge, dry skin, brittle hair
Anorexia bloods
Low:
Glu, K+, phosphate, TSH, sex hormones, renal function
High:
LFT, amylase, growth hormone, glucose, cortisol
SCOFF questionnaire
Sick - make yourself Control - lost over eating One stone lost in 3 months Feel fat Food dominates life
Red flags for anorexia
BMI <13 or below 2nd centile Weight loss >1kg / week Temp 34.5 BP <80/50 SATS <92% Long QT, flat T waves Muscle weakness
Treatment of anorexia (adults)
- Restore nutritional balance + treat complications
- Involve family
- ED unit if severe
- Psychological - ED-CBT
Treatment of anorexia (children)
- Anorexia focussed family therapy
2. CBT
Signs of re-feeding syndrome
- drop in phosphate after >10 days of undernutrition*
- rhabdomyolysis
- resp / cv failure
- arrhythmia
- seizure
Management of re-feeding syndrome
Slow refeeding thiamine + multivits Monitor for: 1. low phosphate 2. low potassium 3. high glucose 4. high magnesium
Additional ED signs for bulimia
vomiting callouses on back of hands (Russel's sign) Oedema (lax + diuretics) gastric dilation carrdiomyopathy (lax)
Metabolic alkalosis (vomiting) Metabolic acidosis (lax)