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Accelerated ventricular rhythm in the neonatal period: a review and two new cases in asymptomatic infants with an apparently normal heart

Accelerated ventricular rhythm (AVR) was observed in two newborn infants. In the first case, arrhythmia was noted during the foetal period. Both neonates were asymptomatic and had no evidence of cardiac disease. The arrhythmia eventually disappeared when the infants were 4 mo and 24 d old, respectively. AVR in the neonatal period is reviewed in this report and recent information regarding appropriate diagnostic evaluation, differentiation from ventricular tachycardia and treatment is outlined.