Which of the following best describes the cardiovascular effects of calcium channel blockers, such as verapamil (Calan) and diltiazem (Cardizem)?
A) Increased peripheral vascular resistance, widened QRS, and increased afterload
B) Increased heart rate and stroke volume, decreased afterload
C) Decreased peripheral vascular resistance, widened QRS, and increased afterload
D) Decreased automaticity and decreased AV node conductivity

Question

Quizplus · Accepted Answer

Calcium channel blockers like verapamil and diltiazem decrease the heart's automaticity and slow down AV node conductivity, which helps in controlling heart rate and reducing blood pressure. They do not typically widen the QRS complex or significantly alter afterload directly.

Which of the Following Best Describes the Cardiovascular Effects of Calcium