What distinguishes verapamil (Calan, Isoptin) and diltiazem (Cardizem) from nifedipine (Procardia)?
A) Verapamil and diltiazem are calcium channel blockers, whereas nifedipine is not.
B) Verapamil and diltiazem reduce SA and AV node conductivity.
C) Nifedipine can be used only to treat anginal episodes.
D) Only nifedipine causes smooth muscle relaxation.

Question

Quizplus · Accepted Answer

Verapamil and diltiazem can reduce SA and AV node conductivity, while nifedipine does not have this effect. Other calcium channel blockers, such as verapamil and diltiazem, may have different effects on the heart and are used for different indications.

What Distinguishes Verapamil (Calan, Isoptin) and Diltiazem (Cardizem) from Nifedipine