870 Surgical Outcomes of Primary and Two-Stage Atrioventricular Septal Defect (AVSD) Repair: A Single Institution Experience

Abstract

Abstract Objective To examine the surgical outcomes of primary and two-stage repair of complete atrioventricular septal defect(AVSD). Method This retrospective study included 74 patients who underwent operation for balanced complete AVSD between January 2015 and December 2018 in National Heart Centre Kuala Lumpur. Patient demographics, types of procedure, post-op complications and follow-up atrioventricular (AV) valve function were analysed. Results Twenty-one patients (median age: 3 months(2.28-4.32months)), weight: 3.10kg( 2.7-3.82kg)) had Pulmonary Artery Banding (PAB) prior to complete AVSD repair. The post-banding weight of patients rose from 3.1kg to 6.4kg prior to complete repair. The rate of ventilator dependence decreased from 19.8 to 4.8%. There was no worsening of post-banding left AV valve insufficiency (5%) before the complete repair. There was no statistically significant difference in the outcomes after complete AVSD repair in both groups (mortality p = 0.133, morbidities p = 0.471). There was a trend towards higher left AV valve insufficiency in the PAB group over time (at discharge, 10 vs 12%; at 3-months, 12 vs 6%; at 1-year, 14 vs 11%). Similarly, the PAB group also demonstrated a trend towards higher rates of major post- operative complications (33 vs 21%) and in-hospital mortality (9.5 vs 1.9%). Conclusions PAB remained as an effective palliative procedure for patients who are not suitable for primary AVSD repair at the time of presentation. However, it is associated with a higher incidence of left AV valve insufficiency at follow up.