1. The following act by blocking cholinergic receptors:
a) trimetaphan
b) hexamethonium
c) ouabain
d) benzhexol
e) physostigmine
2. Esmolol:
a) has a negative inotropic effect
b) has no intrinsic sympathomimetic activity
c) causes a dose-dependent fall in heart rate
d) increases airways resistance
e) may prolong the duration of action of suxamethonium
3. Enflurane:
a) is a halogenated methyl-ethyl ether
b) has a blood/gas solubility coefficient of 1.43
c) lowers intracranial pressure
d) increases the tone of the pregnant uterus
e) causes a decrease in systemic vascular resistance
4. Morphine:
a) causes histamine release
b) has no active metabolites
c) undergoes extensive first-pass hepatic metabolism
d) has an elimination half-life of 3-4 hours
e) may be antagonised by pentazocine
5. Uterine tone is:
a) increased by ketamine
b) decreased by halothane
c) increased by beta-2 antagonists
d) unaffected by suxamethonium
e) decreased by nifedipine
ANSWERS
1.TTFTF
2.TTTTT
3.TFFFT
4.TFTTT
5.TTTTT
ArticleDate:20051103
SiteSection: Article
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