Study note
MedicineCardiology

Sinus bradycardia: significance and treatment

THE CONTEXT
Sinus bradycardia can occur in healthy people; treatment depends on whether symptoms are present and whether they recur or persist.

Physiological and asymptomatic bradycardia

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Sinus bradycardia may occur in healthy people at rest and is common in athletes.
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Asymptomatic sinus bradycardia requires no treatment.

Symptomatic bradycardia

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Symptomatic sinus bradycardia may develop acutely during myocardial infarction and can be treated with intravenous atropine, 0.6–1.2 mg.
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Permanent pacemaker implantation should be considered for recurrent or persistent symptomatic sinus bradycardia.
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