Though ethacrynic acid is also a high-ceiling diuretic, it is rarely used compared to furosemide because

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CNS Drugs Pharmacology Questions

Question 1 of 5

Though ethacrynic acid is also a high-ceiling diuretic, it is rarely used compared to furosemide because

A. It is more ototoxic B. It causes diarrhea and gut bleeding C. Its response increases steeply over a narrow dose range D. All of the above

Correct Answer: D

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

Question 2 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 3 of 5

Ultrashort duration of effect of thiopentone sodium given intravenously is due to

A. Rapid hepatic metabolism B. Rapid renal clearance C. Extensive binding to plasma proteins D. Redistribution to body tissues outside the CNS

Correct Answer: D

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

Question 4 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 5 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.

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