Which is NOT a main function of a pacemaker?

Which is NOT a main function of a pacemaker?

• A. Stimulate cardiac beat
• B. Sense intrinsic beat
• C. Control pre-set rate
• D. Regulate blood pressure

Answer: (D)

Pacemakers are designed to maintain a reliable heart rhythm by delivering electrical impulses when the heart would otherwise beat too slowly, by sensing the heart’s own electrical activity to avoid unnecessary pacing, and by running at a preset or rate-responsive pace to meet the body's needs. These functions—stimulating the cardiac beat, sensing intrinsic beats, and controlling the pacing rate—directly manage the heart’s electrical activity and rate. They do not directly regulate blood pressure, which depends on cardiac output and vascular resistance and involves factors beyond the pacemaker’s scope. So regulating blood pressure is not a core function of a pacemaker.

Pacemakers are designed to maintain a reliable heart rhythm by delivering electrical impulses when the heart would otherwise beat too slowly, by sensing the heart’s own electrical activity to avoid unnecessary pacing, and by running at a preset or rate-responsive pace to meet the body's needs. These functions—stimulating the cardiac beat, sensing intrinsic beats, and controlling the pacing rate—directly manage the heart’s electrical activity and rate. They do not directly regulate blood pressure, which depends on cardiac output and vascular resistance and involves factors beyond the pacemaker’s scope. So regulating blood pressure is not a core function of a pacemaker.