A very anxious person appears in the ER.He has a heart rate of 160 b/min and indicates that he has a history of panic attacks.He is prescribed an antianxiety agent and a drug to slow his heart rate.Identify the drug (to slow heart rate).
A) Muscarinic antagonist
B) Beta1-adrenergic blocker
C) Sympathomimetic
D) Vagolytic

Question

Quizplus · Accepted Answer

Beta1-adrenergic blockers, such as propranolol, are commonly used to slow heart rate in patients with anxiety and tachycardia. They work by blocking the effects of adrenaline on the heart, which reduces heart rate and blood pressure. Muscarinic antagonists and vagolytics have opposite effects and would increase heart rate, while sympathomimetics would further stimulate the sympathetic nervous system and exacerbate anxiety and tachycardia.

A Very Anxious Person Appears in the ER