Which statement is true regarding calcium channel blockers in heart failure?

Which statement is true regarding calcium channel blockers in heart failure?

• A. They have negative inotropic effects
• B. They are preferred in heart failure with reduced ejection fraction
• C. They have positive inotropic effects
• D. They improve mortality

Answer: (A)

Calcium channel blockers reduce the heart’s pumping strength by decreasing calcium influx into cardiac muscle cells, which lowers contractility (negative inotropy). In heart failure with reduced ejection fraction, the heart already struggles to contract effectively, so further reducing contractility tends to worsen status rather than help it. This is why these drugs are not favored in HFrEF and have not been shown to improve mortality. Some CCBs mainly dilate vessels, but even then they do not confer a mortality benefit in heart failure. The true statement is that calcium channel blockers have negative inotropic effects in this setting.

Calcium channel blockers reduce the heart’s pumping strength by decreasing calcium influx into cardiac muscle cells, which lowers contractility (negative inotropy). In heart failure with reduced ejection fraction, the heart already struggles to contract effectively, so further reducing contractility tends to worsen status rather than help it. This is why these drugs are not favored in HFrEF and have not been shown to improve mortality. Some CCBs mainly dilate vessels, but even then they do not confer a mortality benefit in heart failure. The true statement is that calcium channel blockers have negative inotropic effects in this setting.