Sinus bradycardia is a common manifestation of ... abnormal blood pressure response to exercise and marked left ventricular hypertrophy or dilatation. ASD: Atrial septal defect; AVSD ...

Sinus bradycardia, or a slow heart rate, can be a sign of cardiovascular health in healthy young adults and endurance athletes. It can also be a sign of an underlying condition requiring medical ...

Severe sinus bradycardia Sinus pauses/sinus arrest Sinoatrial nodal exit block Chronotropic incompetence (failure of heart rate to increase during exercise) Clinical symptoms depend on the mechanism.

sinus bradycardia, sinoatrial block, and alternating episodes of tachycardia and bradycardia. [1] A large proportion of SND patients also have atrial fibrillation (AF) and prolonged sinus pauses ...