Single patch technique versus double patch technique in repair of complete atrioventricular septal defect

MethodsThis retrospective study included 145 consecutive patients who underwent complete atrioventricular (CAVSD) repair between January 2002 and January 2012. Peri-operative data were analyzed. Ninety-two patients had a two-patch technique (group A); 53 patients had a single-patch technique (group B).ResultsMean age was 13.17 ± 4.94 months (group A) versus 5.15 ± 1.52 months (group B), (p < 0.001). Mean weight was 9.87 ± 5.53 versus 5.23 ± 2.12 kg (p < 0.001). Down syndrome was present in 82 (90.2%) in group A and 48 (90.5%) in group B (p = 0.315). Aortic cross-clamp times in group A was 135.3 ± 19.6 min and group B 107.7 ± 21.4 min (p < 0.0001). Cardiopulmonary bypass times were shorter in group B (132.2 ± 24.3 min) than group A (159.42 ± 31.4 min) with p value <0.001. Chylothorax, post operative bleeding, ICU stay and hospital length were not significant. Reoperation for left atrioventricular valve insufficiency occurred in 5 patients (5.4%) in group A, one of them needed valve replacement and 3 patients (5.7%) in group B. Permanent pacemaker was required for postoperative heart block in 3 patients (3.3%) in group A and 2 patients (3.8%) in group B (p = 0.623). Hospital mortality was seen in 6 patients (6.5%) in group A and 3 patients (5.7%) in group B (p = 0.606).ConclusionsSingle-patch technique can be performed with the same results like the two patch technique with a significantly shorter aortic cross clamp and bypass time.