Why the study?
Complete left bundle branch block after device closure of perimembranous ventricular septal defects is rare but significant, leading to septal dyssynchrony and progressive deterioration of left ventricular function.
Does late surgical explantation of device improve left ventricular dysfunction in patients with LBBB after device closure of perimembranous ventricular septal defect?
Does late surgical explantation of device improve left ventricular dysfunction in patients with LBBB after device closure of perimembranous ventricular septal defect?
Late surgical explantation of a closure device may be considered for the rare complication of complete left bundle branch block and progressive left ventricular dysfunction following perimembranous ventricular septal defect closure.
Requires ECG surveillance after pmVSD device closure; leaves open predictors, incidence, and reversibility of LBBB.
Device closures of perimembranous ventricular septal defects (pm VSD) have been carried out for over 2 decades now and are considered an accepted alternative to surgical closure in selected cases.1 While the development of heart block or aortic regurgitation had been major concerns in the past, the occurrence of complete left bundle branch block (LBBB) after device closure of pm VSD is quite rare, with few published reports.2,3 Development of LBBB is nevertheless significant, leading to septal dyssynchrony and progressive deterioration of left ventricular (LV) function.
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HV et al. (2020) studied this question.
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