A very anxious person appears in the ER.He has a heart rate of 160 beats/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, also known as beta-blockers, slow down the heart rate by blocking the effects of the adrenaline (epinephrine) hormone on the beta₁-adrenergic receptors in the heart. This can help to reduce symptoms of anxiety and panic attacks that are often associated with increased heart rate.

A Very Anxious Person Appears in the ER