Pharmacology of the Cardiovascular and Central Nervous Systems
141. Hallucinations can occur with the following drugs:
a. T: this is one of the active constituents of cannabis.
b. F
c. T
d. F
e. T: delirium tremens can occur during alcohol withdrawal in dependent subjects.
142. The following statement(s) about general anaesthetics are correct:
a. F
b. T
c. T
d. T
e. T
143. Nitrous oxide:
a. T: this combines the analgesia caused by nitrous oxide with the more potent anaesthetic effect of halothane.
b. F
c. F
d. F
e. F: it is difficult to induce anaesthesia with nitrous oxide yet at the same time maintain adequate oxygenation. It is therefore not used for this purpose.
144. Halothane is a general anaesthetic which:
a. F
b. F
c. T
d. T
e. T
145. Thiopentone:
a. T
b. T
c. F
d. F: no barbiturates have marked analgesic actions.
e. F: it has been used to control convulsions in status epilepticus and tetanus. In contrast, methohexitone frequently causes twitching and occasionally convulsions.
146. The following are long-acting benzodiazepines:
a. T
b. F
c. F: half-life of 4 - 15h.
d. F
e. T: half-life of 36 - 200h.
147. Beta-blockers are contraindicated in:
a. T
b. T
c. T
d. T
e. F
148. The following drugs antagonize the actions of L-dopa:
a. T: increase activity of peripheral decarboxylases.
b. F: may produce a parkinsonism-like state.
c. F: augments the peripheral effects of dopamine and may cause hypertension and tachycardia.
d. F
e. T: reserpine depletes the basal ganglia of dopamine and should not be given with L-dopa.
149. Pethidine differs from morphine in that:
a. F
b. T
c. T
d. T
e. F
150. The following statements are true of SSRIs:
a. T
b. F: takes 1 - 3 weeks for antidepressant effect to take place.
c. T
d. T
e. F: is an enzyme inhibitor.