ABSTRACT
Objective:This study aims to review two surgical techniques results of the reoperation for left atrioventricular valve(LAVV) failure in repaired atrioventricular septal defect.Methods:All consecutive patients with repaired atrioventricular septal defect(AVSD) who underwent redo-LAVV surgery from 2005 to 2019 were included. Patients with single ventricles, banding, atrial isomerism, and complex associated anomalies were excluded. Univariate analysis included repair and replacement. Data analyzed included number and year of primary AVSD and redo-LAVV operation, morphology of AVSD, mortality, and reoperation, early and long-term survival.Results:There were a total of 28 patients including 7 boys(25%) with age of 114.5 months(63.0-194.5 months). The mean body weight was 28.55 kg(15.5-55.9 kg). There were 11(39.3%) patients with complete AVSD and 17(60.7%) with partial AVSD, and 21(75%) patients with LAVV valvuloplasty(LAVVP), 7(25%) patients with LAVV replacement(LAVVR). The aortic cross clamp time was significantly longer in patients who underwent LAVVR compared to LAVVP[LAVVR 94 min(79-107)min vs. LAVVP 66 min(45-83 min), P<0.05]. The technique of cleft closure with LAVVP 18(87.5%) more than LAVVR 2(28.6%), P<0.05. Conclusion:The postoperative left atrio-ventricular valve(LAVV) regurgitation is the main reason of the reoperation. The technique of cleft closure with LVVR-Repair is favorable. At follow-up, survivors with re-LVVR-Repair have high rates with numerous operations.