Pharmacology Flashcards
Digoxin toxicity Fx
yellow/ green vision
nausea
confusion
arrythmia - av block, brady
gynaecomastia
take levels 6 hours after last dose
Digoxin toxicity precipitating factors
hypoKal
renal failure
heart failure
Amiodarone
verapamil
diltizaem
spirinolactone
Causes of hypoMAG
Diuretics
PPIs
TPN
diarrhoea
HypoK
HyperCal
Inducers of P450 (therefore reduce INR)
antiepileptics: phenytoin, carbamazepine
barbiturates: phenobarbitone
rifampicin
St John’s Wort
chronic alcohol intake
griseofulvin
smoking (affects CYP1A2, reason why smokers require more aminophylline)
Inhibitor of P450 (increases INR)
antibiotics: ciprofloxacin, erythromycin
isoniazid
cimetidine,omeprazole
amiodarone
allopurinol
imidazoles: ketoconazole, fluconazole
SSRIs: fluoxetine, sertraline
ritonavir
sodium valproate
acute alcohol intake
quinupristin
Lithium toxicity precipitating factors
dehydration
renal failure
drugs - thiazides, ACEi/ ARB, NSAIDs, metronidazole
Reasons for HRT for Premature Ovarian Insufficiency
CVD
Osteoporosis
cognitive impairment
Serotonin syndrome Fx
sweating
tremor
confusion
tachycardia
hypertension
dilated pupils
hypERreflexia + Clonus
Neuroleptic malignant syndrome Fx
Symptoms gradual over days
bradykinesia
hyporeflexia
hypotension
rigidity
Macrolides (eg Clarithromycin, azithromycin) SE
Prolonged QT
GI upset
Cholestatic jaundice
P450 inhib
Azithro - hearing loss + tinnitus
Oculogyric crisis Fx
Agitated
clenched jaw
eyes deviated upwards
Oculogyric crisis causes
antipsychotics
metoclopramide
Parkinsons disease
Urticaria causes (medications)
aspirin
penicillin
NSAIDs
opiates
Amiodarone monitoring
CXR one off initially
TFT, LFT every 6 months
Lithium toxicity Fx
Coarse tremor (fine tremor in therapeutic levels)
hyperreflexia
confusion
seizures
Isoniazid SE
Peripheral neuropathy - prevent with Pyridoxine (Vit B6)
hepatitis, agranulocytosis
P450 inhib