Korean J Transplant.  2021 Oct;35(Supple 1):S145. 10.4285/ATW2021.OP-1219.

Accurancy between estimated graft volume and actual graft weight in living donor liver transplant

• Soy EHA
• Karakaya E
• Akdur A
• Moray G
• Coskun M
• Haberal M

• KMID: 2521330
• DOI: http://doi.org/10.4285/ATW2021.OP-1219

Abstract

Background
In the living donor liver transplant (LDLT) one of the preoperative evaluation stage is the calculation of graft-recipi-ent-weight ratio (GRWR) and remnant liver volume. According to the Başkent criteria, the remnant volume should be at least 40% and the GRWR should be at least 1% in order to minimize postoperative complications and achieve the highest graft functions.We aimed to determine the accuracy of pre-operative computed tomography (CT) graft measurements with actual graft weights in LDLTs in our centers.
Methods
Since 1988, 692 liver transplants have been performed by our team. Of these 692 liver transplants, 480 were LDLTs. Preoperative CT images and intraoperative graft weights were analyzed retrospectively.
Results
Two hundred seventy (56.3%) of 480 donors were female and 210 (43.7%) were male. The mean age of donors was 44±8.5 years. The mean weights of donors was 76±12.5 kg. Of the donor hepatectomies, 47.1% (n=226) were left hepatectomy, 31.7% (n=152) right hepatectomy and 21.2% (n=102) left lateral hepatectomy. The mean total liver volume of donors measured by CT was 1,555.41±235 cm³ . The mean graft volume was 519.41±250 cm³ and the mean graft weight was 507.37±242 cm³ . When we measured the graft weights during surgery, we found that its ratio to the volume measurements made radiologically was 1.03.Remnant liver volume in donors was 64.28%±15.7% of the total volume.
Conclusions
Preoperative radiological assessment of the donor's liver is very important to prevent postoperative complications and to perform successfully living related liver transplant. Otherwise, small-for-size or large-for-size may occur in the recipient and liver failure in the donor.