Introduction
This study was conducted with the permission of the local ethics committee. Complete atrioventricular septal defect was defined by Lillhei et al. in 1955. 1-2 It constitutes 3 to 4% of all congenital cardiac defects, and insidance of 2-3 per thousand live births.3 It is observed most often with Down syndrome (25-71%) and is more common in females. S/M = 1.3/1. Surgical morbidity and mortality, which were high in the early periods, have come to the present day by being improved with a better understanding of congenital surgical anatomy, success in the treatment of pulmonary hypertension, surgical techniques, and the guidance of technological developments.6,7,8 Almost all cases can be operated with good outcomes in the early stages of the disease.9
Complete correction surgery, which started with the use of the TPT by Trusler in 1975, has now evolved into a surgery that tends to not use patches for VSD closure with the MSP technique of Ben Wilcox and Graham Nunn. 3,8,10,11 Along with all these, ideal surgical timing, optimal treatment strategy (primary or staged surgery), single – two-patch techniques are still controversial.