Key result
Surgical conoventricular VSD closure linked to rare intra-Hisian Wenckebach in a pediatric patient.
Why the study?
Mechanisms of post-surgical AV block, including intra-Hisian Wenckebach, are not well characterized in the pediatric population.
Case Report (n=1)
Intra-Hisian Wenckebach is a rare and difficult-to-diagnose complication following surgical closure of a ventricular septal defect in pediatric patients.
We report a 5-year-old girl with transient complete atrioventricular (AV) block following surgical closure of a symptomatic conoventricular ventricular septal defect (VSD) which recovered on post-operative day 9. She later presented with exertional dizziness and fatigue. While congenital cardiac defect repairs are occasionally complicated by complete heart block, this patient was found to have intra-Hisian Wenckebach which is rare in the pediatric population and can be very difficult to discern from surface electrocardiograms and by Holter monitoring. Mechanisms of post-surgical AV block, including intra-Hisian Wenckebach, are not well characterized in the pediatric population.
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Schwartzman et al. (2023) conducted a case report in Conoventricular ventricular septal defect (n=1). Surgical closure of conoventricular ventricular septal defect was evaluated. A 5-year-old girl developed rare intra-Hisian Wenckebach following surgical closure of a conoventricular ventricular septal defect, presenting with exertional dizziness and fatigue.
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