Final answer:
Atropine is a drug used for the treatment of bradycardia. It acts as an antagonist to muscarinic acetylcholine receptors, blocking the effects of excess acetylcholine. The dosage of atropine should be determined by a healthcare professional.
Step-by-step explanation:
Atropine is a drug used for the treatment of bradycardia, a condition where the heart rate drops below 60 beats per minute. It acts as an antagonist to muscarinic acetylcholine receptors, blocking the effects of excess acetylcholine. The dosage of atropine for bradycardia depends on the severity of the condition and should be determined by a healthcare professional. The endpoint of atropine administration is the clearing of bronchial secretions.