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Case Reports
. 1976 Sep;38(9):951-6.
doi: 10.1136/hrt.38.9.951.

Familial sinoatrial node dysfunction. Increased vagal tone a possible aetiology

D G Caralis, P J Varghese
Case Reports

Familial sinoatrial node dysfunction. Increased vagal tone a possible aetiology

D G Caralis et al. Br Heart J. 1976 Sep.

Abstract

Clinical and electrophysiological studies of a 13-year-old boy with sinus bradycardia revealed sinus node dysfunction. Long-term follow-up data of members of his family indicated familial sinus node dysfucntion. Increased vagal tone was present in all patients. It is suggested that excessive vagal discharge for a pronlonged time may be the basic mechanism of sinus node dysfunction in these patients.

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