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CMC Cardiac Medicine Certification

Category - CMC

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A hypertensive patient comes for routine follow up. His EKG demonstrates a PR interval of 220 milliseconds. Which of the following drugs is most likely culprit for this EKG finding?

Simvastatin
Nifedipine
Hydrochlorothiazide
Sorbitrate

Explanation

Answer- B - The most likely culprit for this EKG finding is nifedipine. Pharmacologic agents that can lead to first-degree atrioventricular block include digoxin, calcium channel blockers such as nifedipine, amlodipine, verapamil, diltiazem and beta-blockers.

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CMC Cardiac Medicine Certification

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CMC Cardiac Medicine Certification

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