Exercise does not generally override the effects of beta-blockers on the heart in hypertensive patients or patients with arrhythmias.

Question

Quizplus · Accepted Answer

Beta-blockers work by blocking the effects of adrenaline on the heart, resulting in a decreased heart rate and decreased cardiac output. Exercise stimulates the release of adrenaline, which can partially counteract the effects of beta-blockers. However, the degree to which exercise overrides the effects of beta-blockers varies depending on the dose and type of beta-blocker used. In general, exercise does not completely override the effects of beta-blockers on the heart in hypertensive patients or patients with arrhythmias.

Exercise Does Not Generally Override the Effects of Beta-Blockers on the Heart