Passmed Pharmacology Flashcards
Given to reverse respiratory depression
Flumazenil
How is benzodiazepine overdose treated?
Generally treated by observation only as a first-line
Used for the treatment of beta-blocker overdose
Atropine
When can you give activated charcoal?
Can give in paracetamol overdose but only if within an hour of ingestion
Management of salicylate overdose
Haemodialysis
Management of lithium overdose?
Volume resuscitation
May need haemodialysis
Treatment of iron overdose?
Desferrioxamine (a chelating agent)
What typically causes digoxin toxicity?
Hypokalaemia
First line treatment for severe digoxin toxicity?
Digibind
Why can amiodarone cause thyroid dysfunction?
Due to its high iodine content (amIODarone, amiodinarone)
How long does detoxification from opiates take?
Usually 4 weeks in residential/inpatient setting
Up to 12 weeks in the community
How does digoxin work?
Inhibits the Na+/K+ pump (and increases cardiac contractility)
Can cause sleep disturbance
Beta blockers
Side effect of isosorbide mononitrate?
Tachycardia
Can cause anal ulceration
Nicorandil
When can you not give flecainide?
Cannot give if signs of structural heart disease! - must do echo
Would you do rate or rhythm control in young people?
You would prefer to do rhythm control
First line for diabetic neuropathic pain
Duloxetine
What type of medication is duloxetine?
SNRI
Someone has neuropathic pain and orthostatic hypotension, which medication would you give for the neuropathic pain?
Pregabalin
orthostatic hypotension is a side effect of amitriptyline so would probably avoid
What is codeine
An opiate
What is co-codamol?
Paracetamol and codeine
ECG changes of TCA overdose
QRS widening
Prolonged QT interval
Which medicines may cause lithium toxicity?
ACEis, ARBs, diuretics
- consider this if someone is on lithium and needs blood pressure controlled
Nausea and yellow/green vision
Digoxin toxicity
Ondansetron mechanism of action?
5-HT3 antagonist
Triptan mechanism of action?
Serotonin agonist
Which TB medication can cause gout?
Pyrazinamide
What monitoring do you need to do for azathioprine?
FBC, LFTs
What monitoring do you need to do for statins?
LFTs
baseline
3 months
12 months
What do you need to monitor when a patient is on an ACEi?
U&Es prior to treatment
After increasing dose
At least annually
You can’t take sildenafil if you are taking this drug?
Cannot take sildenafil and GTN
combining a phosphodiesterase inhibitor and nitrate can lead to significant hypotension and can cause MI
Side effect of viagra?
Causes blue discolouration of vision (the blue pill)
How do you monitor heparin?
APTT
How do you monitor low-molecular weight heparin (if you need to at all)
Routine monitoring not needed, but in special situations check anti-factor Xa levels
Lithium range
0.6-1
Measure 12 hours post-dose
What is the most appropriate time to take blood samples for therapeutic monitoring of phenytoin levels?
Immediately before giving next dose
Safest epilepsy drugs to use in pregnancy
Carbamazepine and lamotrigine