Intraoperative anesthetic parameters—particularly norepinephrine infusion duration and relative MAP drop—are powerful independent predictors of early allograft dysfunction in pediatric living donor liver transplantation, substantially outperforming preoperative variables.
Early allograft dysfunction occurred in 40.3% of pediatric living donor liver transplantation recipients in this cohort.
Norepinephrine infusion duration demonstrated near-perfect univariable discrimination for EAD with an AUC of 0.993.
Relative mean arterial pressure drop independently predicted EAD with an AUC of 0.894 in univariable analysis.
Peak intraoperative lactate showed excellent univariable discrimination for EAD with an AUC of 0.936.
The combined multivariable model of intraoperative parameters achieved an AUC of 0.999 with excellent calibration.
Preoperative variables (hemoglobin, bilirubin, and albumin) reached univariable statistical significance but showed markedly inferior discriminative performance compared to intraoperative parameters.
EAD-positive patients experienced significantly longer ICU stays and mechanical ventilation duration compared to EAD-negative patients.
This research suggests that what happens during surgery—specifically how much a child's blood pressure drops and how long they need vasopressor medication (norepinephrine) to maintain blood pressure—can very accurately predict whether a transplanted liver will fail to work properly in the early post-transplant period, a condition called early allograft dysfunction (EAD). In a study of 124 children who received liver transplants from living donors, about 40% developed EAD. The researchers found that two key measures of intraoperative blood pressure management predicted EAD with near-perfect accuracy, far outperforming standard pre-surgery lab values like bilirubin, hemoglobin, and albumin. The most striking finding was that children who required norepinephrine (a blood pressure-supporting drug) for 70 minutes or more during surgery invariably developed EAD—this threshold had perfect sensitivity and negative predictive value, meaning no child who needed prolonged vasopressor support escaped early graft dysfunction. Children who developed EAD also spent significantly longer in the ICU (5 vs. 3 days) and required much more time on a ventilator (24 vs. 0 hours). This research suggests that intraoperative blood pressure management may be a modifiable factor in determining transplant outcomes—meaning that keeping blood pressure stable during surgery might potentially reduce the risk of early graft failure. The authors caution that this was a single-center retrospective study and that external validation in other centers is needed before these findings can be broadly applied. If confirmed, these results could change how anesthesiologists and surgeons approach hemodynamic management during pediatric liver transplantation.
Sahın T, Kavaklı A, Aydın A, Altuntas C, Talıp M, Sahın N, et al.. (2026). Intraoperative Anesthetic Parameters Predict Early Allograft Dysfunction in Pediatric Living Donor Liver Transplantation.. Pediatric transplantation. https://doi.org/10.1111/petr.70453