What action is taken to treat a patient undergoing a sinus bradycardia episode?

Administering atropine is the appropriate action taken to treat a patient experiencing sinus bradycardia. Sinus bradycardia is characterized by a slow heart rate, typically defined as fewer than 60 beats per minute, which can lead to insufficient cardiac output and may result in symptoms like dizziness, fatigue, or syncope.

Atropine, an anticholinergic medication, works by blocking the effects of the vagus nerve on the heart, thereby increasing heart rate. In acute scenarios where bradycardia results in hemodynamic instability, atropine is the first-line treatment and can promote faster heart rhythm recovery.

Other options, while potentially relevant in different clinical situations, do not directly address the underlying issue of bradycardia. Providing supplemental oxygen may benefit the patient if hypoxia is also present but is not a direct treatment for the slow heart rate itself. Increasing intravenous fluids could help with hydration status and improve circulation but is not a primary intervention for sinus bradycardia. The use of a defibrillator is indicated primarily for life-threatening arrhythmias such as ventricular fibrillation or pulseless ventricular tachycardia, rather than for bradycardia, which is typically managed with pharmacological intervention like atrop