PassMed wrong Qs Flashcards
When should you treat paracetamol OD before measuring paracetamol level?
- If <4h and patient is symptomatic
- If >150mg/kg taken
- If patient is malnourished eg anorexia
When should activated charcoal be given in paracetamol OD?
If presents <1h since overdose and has taken >150mg/kg
What is the King’s college criteria for liver transplants?
If pH <7.3 >24h post ingestion
How long should CPR be continued for following thrombolysis in ALS?
60-90 mins
How should cardiovascular prevention be managed?
- Primary prevention –> 20mg atorvastatin
- Secondary –> 80mg atorvastatin
Atorvastatin is more potent than simvastatin
When is ticagrelor vs clopidogrel given in NSTEMIs?
-Ticagrelor if bleeding risk is LOW
-Clopidogrel if bleeding risk is HIGH
What does a biconvex shape on CT head indicate?
Acute extradural haemorrhage
What does a crescent shape on CT head indicate?
Acute subdural haemorrhage
What is the most common cause of viral meningitis?
Enteroviruses eg coxsackie
How is legionella infection diagnosed?
Urinary antigen test
How is mycoplasma diagnosed?
Serology
How is idiopathic intracranial hypertension managed?
Acetazolamide (diuretic) and weight loss
Gout: how should patients on warfarin be managed?
Colchicine over NSAIDs
What organism causes epiglottitis?
H influenza
What dermatological manifestation can reactive arthritis have?
Keratoderma blenorragica - yellow rash on soles of feet
What malignancy is Hashimoto’s thyroiditis associated with?
MALT lymphoma
What is included in the Z score and what does it help diagnose?
-Age
-Gender
-Ethnicity
Used in osteoporosis
How does the Z score differ from the T score?
Z score compares bone mineral density of the patient to a healthy individual of the same age and sex
T score compares bone mineral density of the patient to a healthy, young individual of the same sex
How should OE be managed in diabetics?
Manage with ciprofloxacin ear drops
No improvement? –> ENT referral
What disease is associated with postural hypotension?
Parkinson’s in late stages
What is the MoA of propofol, thiopental and etomidate?
Potentiates GABA
Which anaesthetic agent has the lowest risk of PONV?
Propofol
Which anaesthetic agent is ideally used in RSI?
Thiopental - highly lipid-soluble
Which anaesthetic agent is best to use in cases of haemodynamic instability?
Etomidate
Which anaesthetic agent is most useful in trauma?
Ketamine
What is ketamine’s MoA?
NMDA receptor blocker
How does aspirin overdose present?
-Respiratory alkalosis (hyperventilation)
-Tinnitus
-Vomiting
-Dehydration
How should encephalitis be managed?
IV Aciclovir + IV abx
How should HHS be managed?
Fluid resuscitation over 1-2h initially (slower than DKA) initially
HHS develops over a longer time period so should be corrected more slowly
What are signs of uraemia?
-Pericarditis
-Encephalitis
-Anorexia
-Pruritis
-Fatigue
-Nausea
What is lidocaine’s MoA?
Blocks sodium channels disrupting the action potential
How should broad-complex tachycardias be managed?
Rhythm control = amiodarone
Rate control = bisoprolol or diltiazem if contraindicated
How should keloid scars be managed?
Intralesional steroids
What class of drugs is contraindicated in aortic stenosis?
ACE inhibitors
