Hepatic Duct Division During Robotic Living Donor Hepatectomy: A Comparison Between the Novel Triple C (Clip-Clamp-Cut) and the Cut-Suture Techniques.

Background: In robotic donor hepatectomy (RDH), hepatic duct division (HDD) and its stump closure technique are of paramount importance in avoiding postoperative biliary complications in both donors and recipients. We describe our novel triple C ("clip-clamp-cut") technique of HDD. Methods: Out of 4016 living donor liver transplant (LDLT) (2004-October 2023), we have performed 208 RDH cases since December 2019. This study is a retrospective analysis of the first 160 RDH cases. After excluding the first 20 RDH cases (learning curve) and 3 left-sided RDH cases, 137 cases with no exclusion criteria were included. We divided these 137 donors into the "cut and suture" (CS) group (n = 33) and the "triple C" technique group (n = 104). We compared intraoperative details and postoperative outcomes. Results: All 137 robotic donors and 128/137 recipients are currently well. Donor biliary leak rate was significantly lower among the triple C group (n = 3, 2.9%) compared to the CS group (n = 5, 15.2%) (p=0.009). No other differences in postdonation morbidity were observed among the two groups. Recipient biliary complication rate was lower in the triple C group than in the CS group although not statistically significant (10.6% vs. 15.1%; p=0.537), despite more multiple biliary anastomoses in the former. No significant differences in post-transplant recipient morbidity and mortality were observed. Conclusions: Our simple yet novel triple C technique enables clean, precise, bloodless HDD resulting in lower donor and potentially recipient biliary complication rates. The ease and reproducibility make it ideal for widespread adoption.