Dale's vasomotor reversal phenomenon is exhibited

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Question 1 of 5

Dale's vasomotor reversal phenomenon is exhibited by

A. Adrenaline B. Noradrenaline C. Isoprenaline D. Both (a) and (b)

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

The H1 receptor antagonist with high anticholinergic activity is

A. Diphenhydramine B. Terfenadine C. Mepyramine D. Clemastine

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

Regarding the cardiac and therapeutic effect of phenytoin, which of the following is true?

A. It increases the action potential duration in Purkinje fibres B. It has a brief duration of action because of tÂ½ of 2 hours C. It is probably the drug of choice in the treatment of arrhythmias caused by digitalis intoxication D. The drug markedly depresses conduction velocity in the A-V node and intraventricular conduction system

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

For induction of anaesthesia, nitrous oxide is superior to ether because

A. Nitrous oxide is not explosive, while ether vapours are flammable in air B. Induction with nitrous oxide is very rapid while with ether it is slow and unpleasant to the patient C. Ether is irritant to the respiratory tract and may lead to coughing, laryngeal spasm and increased mucus secretion while nitrous oxide does not D. All of the above

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

What is true of methylphenidate?

A. Mild CNS stimulant B. Abuse potential as of amphetamine C. Effective in narcolepsy and attention deficit disorder D. All of the above

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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Dale's vasomotor reversal phenomenon is exhibited by

Nurselytic

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