Long-term results after surgical repair of atrioventricular septal defect

OBJECTIVES We analysed our 29-year experience of surgical repair of atrioventricular septal defect (AVSD) to define risk factors for mortality and reoperation. METHODS Between 1988 and 2017, 508 patients received AVSD repair in our institution; 359 patients underwent surgery for complete AVSD, 76 for intermediate AVSD and 73 for partial AVSD. The median age of the patients was 6.1 months (interquartile range 10.3 months), and the median weight was 5.6 kg (interquartile range 3.2 kg). The standard AVSD repair was performed using 2-patch technique (n = 347) and complete cleft closure (n = 496). The results were divided into 2 surgical eras (early era 1986-2004 and late era 2004-2017). Risk factors were analysed to determine the impact of patient age, weight, the presence of trisomy 21 and complex AVSD on mortality and reoperation rate. RESULTS In-hospital mortality decreased from 10.2% (n = 26) in early surgical era to 1.6% (n = 4) in late surgical era (P