781.Which does not cause constipation
A.Digoxin
B.Verapamil
C.Imipramine
D.Codeine
E.Chlorpromazine

782.A woman is hypertensive with a K of 6.7, which is least likely to have caused this?
A.K supplements
B.ACE inhibitor
C.Frusemide
D.Spironolactone
E.Suxamethonium

783.Which is least likely to cause low phenytoin levels
A.Carbamazepine
B.Non compliance
C.Hypoalbuminaemia
D.Disulfiram
E.Erythromycin

784.Which is a wrong S/E match
A.Phenytoin –gum hypertrophy
B.Ethosuximate –hirsuitism
C.Phenobarbiral –enzyme induction
D.Carbamazepine –ataxia
E.Valproate –idiosyncratic hepatic toxicity

785.Pt comes in staggering, agitated and hyperthermic with dilated pupils. Which is the least likely cause
A.Atropine OD
B.Amphetamines
C.Angels trumpet
D.TCA OD
E.Aspirin OD

786.Benztropine causes
A.miosis
B.diarrhea
C.confusion
D.bronchorrhoea
E.GI haemorrhage

787.β blockers may cause drug interactions through a variety of mechanisms including all of the following except
A.decreasing renal blood flow
B.inducing cytochrome P450
C.slowing the absorption of IM drugs by decreasing CO
D.direct receptor binding site competition
E.decreasing hepatic blood flow

788.Examples of pharmoacokinetic drug interactions include all except
A.Sulphonamide displacing warfarin from its binding sites
B.Adrenaline added to local anaesthetics
C.Probenacid added to penicillins
D.Sulphonamide added to trimethoprim
E.Barbiturates increasing the hepatic metabolism of paracetamol

789.Ototoxicity occurs with all except
A.ethacrynic acid
B.gentamicin
C.frusemide
D.allopurinol

790.The CAST trial highlighted the adverse effects of
A.metoprolol
B.verapamil
C.sotalol
D.flecainide
E.bretylium

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