Therefore, depending on the circumstances, bradycardia may be symptomatic with a heart rate of 60 beats/min and asymptomatic at a heart rate of 30 beats/min.

A total of 8/66 patients received pacemakers. Indications for pacing included asymptomatic bradycardia during the first postoperative month, symptomatic bradycardia (seizures and syncope ...

Sinus bradycardia is frequently asymptomatic. Heart rates in the 40s and 50s can be tolerated well. When symptoms arise, they manifest as fatigue, dizziness and dyspnea on exertion (including ...

Asymptomatic sinus bradycardia in child with complex CHD, with resting HR <40 beats/min or pauses >3 s. Patients with CHD and impaired hemodynamics due to sinus bradycardia or loss of AV synchrony.