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CSC Cardiac Nursing Subspecialty

Category - Problems

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A patient who has hypertension is noted to have developed first degree heart block; the PR interval is 22 milliseconds. Which of the following drugs would be most likely to cause this EKG finding?

Losartan
Metoprolol
Hydrochlorothiazide
Spironolactone

Explanation

Answer: B - Beta blockers can cause first-degree heart block. Other drugs that can cause first AV block include digoxin, and calcium channel blockers such as nifedipine, amlodipine, verapamil, and diltiazem.

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CSC Cardiac Nursing Subspecialty

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CSC Cardiac Nursing Subspecialty

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