Medications that are used to treat arrhythmias may use which of the following mechanisms? A)block $\beta$-adrenergic receptors. B)block fast Na⁺ channels. C)block slow Ca²⁺ channels. D)All of the choices are correct.

Question

Quizplus · Accepted Answer

Medications used to treat arrhythmias may target different mechanisms to regulate the heart's electrical activity. These mechanisms include blocking beta-adrenergic receptors (A), which reduce the effect of adrenaline on the heart; blocking fast sodium channels (B), which slow down the conduction of electrical impulses through the heart; and blocking slow calcium channels (C), which reduce the entry of calcium into the heart cells and reduce their contractility. Therefore, medications used to treat arrhythmias may use one or more of these mechanisms, therefore, choice D is the best answer.

Medications That Are Used to Treat Arrhythmias May Use Which β\betaβ

Medications That Are Used to Treat Arrhythmias May Use Which $\beta$