This case report highlights diffuse conduction abnormalities, including absent atrial pacemaker activity and impaired AV node automaticity, in an adolescent with familial sinus node disease.
Supports vagal testing in adolescent familial sinus node disease; hypothesis-generating and requires prospective validation.
We report a case of familial sinus node disease with associated conduction abnormalities in the atrioventricular node and distal conduction system Spontaneous atrial pacemaker activity was absent though the atrium could be depolarized. The pacemaker activity of the heart resided in the atrioventricular junction. The AV node showed impaired automaticity and abnormal conduction properties which partially improved after vagal blockage.
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Tan et al. (1981) studied this question.
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