DHA Pharmacist Licensing Exam

What is the pharmacological basis for using atropine to treat bradycardia?

Atropine blocks muscarinic receptors, preventing acetylcholine-induced slowing of the heart rate Atropine stimulates beta-1 receptors directly Atropine releases norepinephrine from nerve terminals Atropine blocks potassium channels in the SA node

Correct Answer:

Atropine blocks muscarinic receptors, preventing acetylcholine-induced slowing of the heart rate

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