Drugs known as calcium channel blockers such as nifedipine can be used to
A)decrease the force of cardiac contraction.
B)increase blood pressure.
C)increase the rate of cardiac contraction.
D)increase the force of contractions.
E)decrease afterload.

Question

Quizplus · Accepted Answer

Calcium channel blockers such as nifedipine decrease the force of cardiac contraction by blocking calcium entry into the muscle cells of the heart and inhibiting the contractile process. This leads to a decrease in blood pressure and can be used to treat conditions such as hypertension and angina. Calcium channel blockers do not increase blood pressure, increase the rate of cardiac contraction, or increase the force of contractions. They may indirectly decrease afterload by reducing blood pressure.

Drugs Known as Calcium Channel Blockers Such as Nifedipine Can