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17 July 2018 : Original article  

Graft Regeneration and Functional Recovery in Patients with Early Allograft Dysfunction After Living-Donor Liver Transplantation

Min Suk Chae1ABCDEF, Youngchan Kim1BF, Nuri Lee1BF, Hyun Sik Chung1BF, Chul Soo Park1BF, Jaemin Lee1BF, Jong Ho Choi1BF, Sanghyun Hong1ABCDF*

DOI: 10.12659/AOT.909112

Ann Transplant 2018; 23:481-490

Abstract

BACKGROUND: Successful graft regeneration is important in living-donor liver transplantation (LDLT) because partial liver grafts are used. Early allograft dysfunction (EAD) is an intermediate outcome that affects the long-term postoperative course in liver transplantation. The aim of the present study was to investigate liver graft regeneration under EAD development in LDLT.

MATERIAL AND METHODS: The data of 226 patients who underwent LDLT from September 2010 to July 2014 were retrospectively analyzed. The patients were classified into 2 groups: one with and one without EAD. Graft regeneration, functional recovery, and long-term patient survival were compared between the 2 groups.

RESULTS: The grafts grew more vigorously in the EAD group than in the non-EAD group, as evidenced by the larger absolute (ALV) and relative liver volumes (RLV) of the former on postoperative days (POD) 7 and 21. The median (interquartile range) RLVs of the non-EAD group versus the EAD group were as follows: 55.2 (47.9–65.8) vs. 53.7 (46.6–64.5)% preoperatively, p>0.05; 76.1 (66.9–85.7) vs. 86.7 (73.9–96.8)% on POD 7, p<0.01; 79.6 (69.3–91.2) vs. 93.7 (79.6–101.6)%, p<0.01 on POD 21. In the early postoperative period, hepatic function, measured as total bilirubin and international normalized ratio, was higher in the EAD group; however, after EAD development, graft function recovered in these patients. In the follow-up period, overall patient survival was comparable between the 2 groups.

CONCLUSIONS: The liver grafts of EAD patients steadily regenerated, such that the development of EAD did not affect long-term patient survival after LDLT.

Keywords: Liver Regeneration, Liver Transplantation, Living Donors, Primary Graft Dysfunction

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Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358