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Outcome after reoperation for atrioventricular septal defect repair

^a Department of Cardio-Thoracic Surgery, Erasmus MC Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
^b Department of Cardiology, Erasmus MC Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
^c Department of Pediatric Cardiology, Erasmus MC Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands

*Corresponding author. Department of Cardio-Thoracic Surgery, Room BD 575, Erasmus MC, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands. Tel.: +31-10-7035412; fax: +31-10-7033993.

E-mail address: o.birim{at}erasmusmc.nl (Ö. Birim).

Results of surgical repair of atrioventricular septal defect (AVSD), both partial (PAVSD) and complete (CAVSD), have improved. However, reoperation is not uncommon. This report describes our experience in 59 patients who underwent reoperation after AVSD repair, between 1977 and 2008. Thirty-one patients had a PAVSD, 28 had a CAVSD. Mean interval between initial repair and reoperation was 10±11 years (PAVSD vs. CAVSD: 13±12 vs. 6±9 years, P=0.063). Reoperations were required for left atrioventricular valve regurgitation (LAVVR) in 53 patients (combined with right atrioventricular valve regurgitation in 10, atrial septal defect (ASD) in 11, ventricular septal defect (VSD) in 7, left ventricular outflow tract (LVOT) obstruction in 1, and aortic valve stenosis in 1), ASD in 3, and LVOT obstruction in 3. Valve repair was performed in 45 patients and replacement in 8. Repair techniques of the left-sided atrioventricular valve (LAVV) included cleft closure in 44 patients, commissuroplasty in 19, and annuloplasty in 1. Freedom from additional reoperation was 85%, and 80% at 5 and 15 years. Hospital mortality was 3%. Overall survival was 91%, and 86% after 5 and 15 years. The most common indication to undergo reoperation is LAVVR. Reoperation is safe and in the majority of cases, a durable repair of the LAVV can still be achieved.

Key Words: Atrioventricular septal defect; Reoperation; Congenital

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