Impact of the Intermittent Pringle Maneuver for Predicting Post-hepatectomy Liver Failure: A Cohort Study of 597 Consecutive Patients.

Background: Intermittent Pringle maneuver (PM) is widely performed to reduce blood loss during hepatectomy; however, its impact on clinically relevant post-hepatectomy liver failure (PHLF) remains controversial. This study aimed to assess the impact of PM on PHLF and explore whether PM provides additional value for predicting PHLF.

Methods: Consecutive patients, who underwent hepatectomy without biliary and/or vascular reconstruction between 2011 and 2018 in a single institution, were retrospectively analyzed. The main outcome was PHLF grades B/C as defined by the International Study Group of Liver Surgery. A multivariable logistic regression model of variables significantly associated with PHLF was established. The model's predictive ability was assessed by the area under the receiver operating characteristic curve (AUROC).

Results: Among 597 patients, PHLF occurred in 42 (7.0%). PM was applied in 421 patients (70.5%) and was associated with the development of PHLF (PM vs. no-PM: 9.7 vs. 0.6%, P < 0.001). After the propensity score matching, patients with PM experienced significantly increased rates of PHLF (P = 0.010). Rem-ALPlat index (including future liver remnant, preoperative albumin level, and platelet count; P < 0.001), the number of PMs (P = 0.032), and blood loss (P = 0.007) were identified as significant predictors of PHLF. The model's AUROC combined with the intraoperative variables was higher than that of the preoperative model alone (0.877 vs. 0.789, P = 0.004).

Conclusions: PM was involved in the occurrence of clinically relevant PHLF. Further, intraoperative factors including PM may provide additional value to predict PHLF and may facilitate early post-hepatectomy intervention.