What is the electrophysiological mechanism of atrioventricular reciprocal rhythm and chronic reciprocating tachycardia in a newborn infant?
Electrophysiological studies, specifically recording the sequence of atrial activation, can identify concealed Wolff-Parkinson-White syndrome as the cause of chronic reciprocating tachycardia in newborns.
A case of atrioventricular reciprocal rhythm and chronic reciprocating tachycardia in a newborn infant is presented. Electrophysiological studies suggest that these rhythm disturbances are related to the presence of a right-sided atrioventricular accessory pathway capable only of retrograde conduction (concealed Wolff-Parkinson-White syndrome). The technique of recording the sequence of atrial activation during the tachycardia is described and its clinical importance emphasised.
Sung et al. (Fri,) studied this question.