Bidirectional Glenn Procedure in Patients Less Than 3 Months of Age: A 14-Year Experience.

Background: Contradictory data exist regarding timing of stage 2 palliation (S2P). Prolonged interstage hospitalizations and home surveillance programs have contributed to a more rapid progression to S2P. Our goal is to describe the S2P population and explore the relationships of clinical outcomes and S2P timing at our institution over the last 14 years.
Methods: S2P procedures from 2004 to 2018 at a single institution were included in a retrospective analysis. The analysis was stratified by S2P timing and clinical variables. The primary outcome was Fontan completion, and secondary outcomes included mortality and orthotopic heart transplantation rate, as well as perioperative clinical variables.
Results: A total of 114 patients who underwent S2P were included. The median age and weight at S2P were 100 days (interquartile range [IQR], 87-119) and 5.1 (IQR, 4.6-5.5) kg, respectively. The median age in the early group was 79 (IQR, 73-87) days and in the nonearly group was 107 (IQR, 100-124) days. Ninety percent of cavopulmonary anastomoses were augmented with an ePTFE (expanded polytetrafluoroethylene) patch. The overall Fontan completion rate was 76%, without differences in Kaplan-Meier estimates. There were no operative mortalities and no differences in late mortality rate (P = .30).
Conclusions: The interstage period continues to be high risk for those undergoing single-ventricle palliation. In our experience, S2P performed at less than 90 days seems to be a viable and safe procedure when indicated, resulting in comparable Fontan completion rates.
(Copyright © 2020 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)