Which of the following drugs most likely caused the adverse effect of dizziness and fainting when standing up rapidly?

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Cardiovascular Drugs Pharmacology Slideshare Questions

Question 1 of 5

Which of the following drugs most likely caused the adverse effect of dizziness and fainting when standing up rapidly?

Correct Answer: D

Rationale: The correct answer is D: Prazosin. Prazosin is an alpha-1 adrenergic blocker that can cause orthostatic hypotension, leading to dizziness and fainting when standing up rapidly. It works by dilating blood vessels, which can cause a sudden drop in blood pressure upon standing. Propranolol (A) is a beta-blocker and can cause dizziness but is less likely to cause orthostatic hypotension. Minoxidil (B) is a vasodilator that can cause rapid heart rate but not typically dizziness upon standing. Hydralazine (C) is a direct vasodilator that can cause reflex tachycardia but is less likely to cause orthostatic hypotension compared to alpha-1 blockers like Prazosin.

Question 2 of 5

Coronary steal phenomenon' has been noted most frequently with

Correct Answer: B

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

Question 3 of 5

Inhibition of thromboxane synthesis by aspirin in platelets lasts for 5-7 days because

Correct Answer: D

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

Question 4 of 5

The client has developed neutropenia from a medication. What medication might this be?

Correct Answer: B

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

Question 5 of 5

The client has a heart rate of 70 and a P wave that comes early and is malformed. What is the likely cause of this?

Correct Answer: B

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

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