Question
A 45-year-old man is noted to have dilated cardiomyopathy with atrial fibrillation and a rapid ventricular rate. An agent is used to control the ventricular rate, but the cardiac contractility is also affected, placing him in pulmonary edema. Which of the following agents was most likely used?
| A. | Amiodarone |
| B. |
Digoxin |
| C. |
Nifedipine |
| D. |
Verapamil |
Show Answer
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Correct Answer � D Explanation |
 |
Answer D)
Verapamil has been used to slow the ventricular rate in atrial fibrillation.
Toxicity: Since the calcium current is important in mediating cardiac contraction and vasoconstriction, calcium channel blockers are associated with negative effects on cardiac contractility and with hypotension