Perventricular device closure of perimembranous ventricular septal defect: effectiveness of symmetric and asymmetric occluders

Abstract

Perventricular device closure of pmVSDs appears safe and effective with symmetric and asymmetric occluders. However, the lower residual shunt disappearance and higher branch block incidence rates for asymmetric occluders would favour more proactive conversion to surgical repair immediately when residual shunt is present intraoperatively.