Normothermic regional perfusion and liver transplant: expanding the donation after circulatory death donor pool.

Abstract

Purpose of review: Normothermic regional perfusion (NRP) is a novel technique developed to improve organ utilization and recipient outcomes following donation after circulatory death (DCD). NRP has revolutionized DCD liver transplant by extending donor criteria and reducing the incidence of ischemic cholangiopathy (IC) and other complications in recipients. However, there is significant geographic and center-specific variation in NRP use and practices. This review collates practices from pioneering NRP centers across the globe regarding donor selection criteria, NRP techniques, organ viability monitoring, and other key areas to help guide the continued growth of NRP liver transplantation.

Recent findings: DCD livers recovered using NRP have consistently demonstrated excellent outcomes, with IC and patient and graft survival rates approaching those seen with grafts from donation after brain death donors. Recently, transplant centers have been working to increase the DCD donor pool by relaxing limits on donor quality, reconsidering organ viability markers, and combining NRP with ex situ machine perfusion technologies.

Summary: NRP is a powerful organ recovery technology transforming the practice of DCD liver transplantation. Current evidence suggests that organ utilization could be further expanded using NRP recovery, with excellent clinical outcomes reported by centers using less stringent donor and organ viability criteria.