Venous outflow obstruction in pediatric left lateral segment split liver transplantation

Abstract

Background: Venous outflow obstruction (VOO) is a known cause of graft and patient loss after pediatric liver transplantation (LT). We analyzed the incidence, risk factors, diagnosis, management, and outcome of VOO in a large, consecutive series of left lateral segment (LLS) split LT with end-to-side triangular venous anastomosis. Methods: We evaluated data collected in our prospective databases relative to all consecutive pediatric liver transplants performed from January 2006 to December 2021. We included in this study children undergoing LLS split liver transplant with end-to-side triangular anastomosis. Diagnosis of VOO was based on clinical suspicion and radiological confirmation. Results: VOO occurred in 24/279 transplants (8.6%), and it was associated with lower graft weight (p =.04), re-transplantation (p =.008), and presence of two hepatic veins (p