PSA study Flashcards
what are common P450 enzyme inducers? CRAP GPS induce anger
carbamazepine
rifampicin
alcohol (chronic)
Phenytoin
Griseofulvin
Phenobarbitol
Sulphonylureas/St Johns Wort
what are common P450 enzyme inhibitors? Google SICKFACES.COM
Grapefruit juice
Sulphonamides
Isoniazid
Cimetidine
Ketoconazole
Fluconazole
Alcohol (acute)
Chloramphenicol
Erythromycin
Sodium valproate
Ciprofloxacin
Omeprazole
Metronidazole
which medication should be increased during surgery?
steroids if patient on long-term, similar to sick day rules
what drugs should be stopped before surgery? (I LACK OP)
insulin, lithium, anticoag/antiplatelets, COCP/HRT, K-sparing diuretics, Oral hypoglycaemics, perindopril (and other ACEis)
when should a patient stop taking their COCP or HRT before surgery?
4 weeks before surgery
when should a patient stop taking their lithium before surgery?
one day before
when should a patient stop taking their potassium sparing diuretic or ACEi priorto surgery?
the day of surgery
what are things to look through when assessing a prescription chart? PReSCRIBER
patient details
reaction (allergies)
signed chart
contraindications
route of drugs
does the patient need: IV fluids, VTE prophylaxis, anti-emetic or pain relief
what are the side effects of corticosteroids?
Stomach ulcers, Thin skin, oEdema, heaRt failure, Osteoporosis, Infection, Diabetes
what are contraindications of NSAIDs?
No urine (renal impairment/AKI), Systolic dysfunction (heart failure), Asthma, Indigestion, Dyscrasia (clotting abnormality)
which drug that is technically an NSAID is not contraindicated in renal impairment or asthma?
aspirin
dry cough is a common side effect of which anti-hypertensives?
ACE inhibitors
which anti-hypertensives can cause a wheeze in asthmatics and worsening of acute heart failure (but helps chronic heart failure)?
beta blockers
peripheral oedema and flushing are side effects commonly seen with which anti-hypertensives?
calcium channel blockers
gynaecomastia is associated with which type of anti-hypertensive?
potassium sparing diuretics (e.g spirinolactone)
gout is associated with which diuretic?
loop diuretics like furosemide
if a patient is hypernatraemic or hypoglycaemic which fluid is preferred for maintenance compared to the usual normal saline?
5% dextrose
what fluid may be considered in patients with ascites?
human albumin solution
how much fluid would we stimate a patient is depleted if:
- they are oliguric <30ml/hr?
- reduced urine output and tachycardic?
- reduced urine output, tachycardic and shocked?
- 500ml
- 1 litre
- over 2 litres
IV potassium should not be given at a rate of greater than what?
10mmol per hour
what should you check before prescribing a patient fluids?
their U+Es, fluid status (ensure not overloaded), palpate bladder to ensure if reduced urine is not from obstruction
which patients shouldn’t be given compression stockings?
patients with peripheral arterial disease as may lead to acute limb ischaemia
who should not be given metaclopramide?
parkinson patients- as dopamine antagonist
young women- risk of dyskinesia
how much paracetamol should be prescribed?
1g QDS or 6 hourly