• Hsin-Chia Lin, Mei-Hwan Wu, Jou-Kou Wang, Ming-Tai Lin, Chun-An Chen, Chun-Wei Lu, Yih-Sharng Chen, Shu-Chien Huang, and Shuenn-Nan Chiu.
• Department of Pediatrics, National Taiwan University Children's Hospital, Taipei, Taiwan; Department of Pediatrics, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan.
• J Formos Med Assoc. 2022 Jan 1; 121 (1 Pt 1): 89-97.

Background/PurposeFontan operation is the standard surgical procedure for achieving long-term survival in single-ventricular complex congenital heart diseases (SV-CHD). We aim to identify the perioperative outcomes and impact of heterotaxy syndrome (HS) after Fontan operation in a tertiary pediatric cardiology center.MethodsMedical records were reviewed for all patients who received Fontan operation and who were born between 1997 and 2017 in our institution. Preoperative, operative, and postoperative risk factors for perioperative mortality and morbidity were analyzed.ResultsTotally, 154 patients were enrolled (103 SV-CHD and 51 HS), and the male to female ratio was 92:62. The mean age of Fontan operation was 5.1 years, and extracardiac conduit comprised the majority (90.9%) of Fontan operation. Overall perioperative event-free survival to discharge was 91.6% (84.3% in HS and 95.1% in other SV-CHD, P = 0.032). For secondary outcomes, length of intensive care stay and duration of pleural effusion drainage were not significantly different between patients with HS and other SV-CHD, but postoperative arrhythmia was more common in HS group (31.4% vs. 12.6%, P = 0.005). In multivariable regression analysis, preoperative risk factors including operation year before 2007 and high PAP and postoperative factors of elevated postoperative CVP were associated with worse outcomes. HS was not a predictor of worse outcome after adjusting for preoperative PAP and operation era.ConclusionSurgical outcome has improved much in current era. Perioperative outcome is poorer in patients with HS than other SV-CHD, but HS is not a predictor of perioperative mortality after adjusting for hemodynamic factors.Copyright © 2021. Published by Elsevier B.V.

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