Normothermic Liver Machine Perfusion and Successful Transplantation of Split Liver Grafts: From Proof of Concept to Clinical Implementation

Author:

Krendl Felix J.1,Cardini Benno1,Laimer Gregor2,Singh Jessica1,Resch Thomas1,Oberhuber Rupert1,Schneeberger Stefan1

Affiliation:

1. Department of Visceral, Transplant and Thoracic Surgery, Center for Operative Medicine, Medical University of Innsbruck, Innsbruck, Austria.

2. Interventional Oncology/Stereotaxy and Robotics, Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria.

Abstract

Background. Normothermic liver machine perfusion (NLMP) is advancing the field of liver transplantation (LT). Beyond improved preservation and organ assessment, NLMP helps to increase organ utilization. We herein address the feasibility and merit of NLMP in split liver transplantation (SLT) to postpone the transplantation of the second split graft to the following day. Methods. We analyzed the perfusion characteristics and outcomes of all consecutive adult recipients who underwent SLT following NLMP from February 1, 2018, to June 30, 2023. The primary endpoint was 90-d graft and patient survival. Secondary endpoints were posttransplant complications and 90-d morbidity. Results. Three right and 3 extended right SLT following NLMP have been performed. NLMP was uneventful in all cases. Perfusion characteristics differed according to graft volume. Mean perfusion time was 17:00 h (±05:13) and bile production ranged between 8 and 21 mL/h. All split grafts fulfilled predefined center viability criteria during NLMP and were transplanted on the following day. The 90-d graft and patient survival rate was 100%. Three patients (50%) required an early relaparotomy, and 2 patients (33.3%) developed biliary complications. The 90-d morbidity as recorded by the comprehensive complication index was 62.7 (±24.7). Conclusion. NLMP of split liver grafts is technically feasible and safe. Through prolongation of preservation time, NLMP allows to safely postpone transplantation of the second split liver graft to the next day.

Funder

Dr. Gabriel Salzner Stiftung

Publisher

Ovid Technologies (Wolters Kluwer Health)

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