Abstract 13312: Risk Factors for the Development of Tachyarrhythmia Following the Norwood Procedure in the Single Ventricle Reconstruction Trial

Background: Tachyarrhythmias are an important contributor to morbidity following the Norwood procedure for single ventricle congenital heart disease. The purpose of this study was to determine what demographic, preoperative, or operative factors may be associated with the development of postoperative tachyarrhythmias in this population. Methods: We performed a retrospective analysis of data collected prospectively through the multicenter Pediatric Heart Network Single Ventricle Reconstruction Trial for infants undergoing a Norwood procedure in 2005-2008. Our primary outcome of interest was any documented tachyarrhythmia requiring treatment or intervention during the inpatient postoperative stay. Subjects with a documented preoperative tachyarrhythmia (n=15) were excluded. After performing univariate chi-square analyses on a variety of candidate factors, we conducted multivariate stepwise logistic regression, including spline terms for nonlinearly associated variables, to calculate the adjusted odds ratios...