• Annals of surgery · Nov 2023

    The Goal of Intraoperative Blood Loss in Major Hepatobiliary Resection for Perihilar Cholangiocarcinoma: Saving Patients from a Heavy Complication Burden.

    • Shoji Kawakatsu, Takashi Mizuno, Junpei Yamaguchi, Nobuyuki Watanabe, Shunsuke Onoe, Masaki Sunagawa, Taisuke Baba, Tsuyoshi Igami, Yukihiro Yokoyama, Takahiro Imaizumi, and Tomoki Ebata.
    • Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
    • Ann. Surg. 2023 Nov 1; 278 (5): e1035e1040e1035-e1040.

    ObjectiveTo determine the goal of intraoperative blood loss in hepatectomy for perihilar cholangiocarcinoma.BackgroundAlthough massive bleeding can negatively affect the postoperative course, the target value of intraoperative bleeding to reduce its adverse impact is unknown.MethodsPatients who underwent major hepatectomy for perihilar cholangiocarcinoma between 2010 and 2019 were included. Intraoperative blood loss was adjusted for body weight [adjusted blood loss (aBL)], and the overall postoperative complications were evaluated by the comprehensive complication index (CCI). The impact of aBL on CCI was assessed by the restricted cubic spline regression.ResultsA total of 425 patients were included. The median aBL was 17.8 (interquartile range, 11.8-26.3) mL/kg, and the CCI was 40.6 (33.7-49.5). Sixty-three (14.8%) patients had an aBL<10 mL/kg, nearly half (45.4%) of the patients were in the range of 10 ≤aBL<20 mL/kg, and 37 (8.7%) patients had an aBL >40 mL/kg. The spline regression analysis showed a nonlinear incremental association between aBL and CCI; CCI remained flat with an aBL under 10 mL/kg; increased significantly with an aBL ranging from 10 to 20 mL/kg; grew gradually with an aBL over 20 mL/kg. These inflection points of ~10 and 20 mL/kg were almost consistent with the cutoff values identified by the recursive partitioning technique. After adjusting for other risk factors for the postoperative course, the spline regression identified a similar model.ConclusionsaBL had a nonlinear aggravating effect on CCI after hepatectomy for perihilar cholangiocarcinoma. The primary goal of aBL should be <10 mL/kg to minimize CCI.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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