Highest intraoperative lactate level could predict postoperative infectious complications after hepatectomy,

Makoto Meguro1, Toru Mizuguchi, Masaki Kawamoto

  • 1Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan. meguro@sapmed.ac.jp.

Abstract

Insights

Minimizing intraoperative lactate levels during liver surgery can reduce infectious complications. Target lactate below 44 mg/dL for normal livers and 29 mg/dL for chronic liver disease patients.

Area of Science:

  • Hepatobiliary Surgery
  • Surgical Physiology
  • Infectious Disease Prevention

Background:

  • The Pringle maneuver, used in liver transection to reduce blood loss, can induce reperfusion injury.
  • Reperfusion injury may elevate intraoperative lactate levels, potentially compromising the immune system and increasing infection risk.
  • Postoperative infectious complications are a significant concern following hepatectomy.

Purpose of the Study:

  • To investigate the correlation between the highest intraoperative lactate level and the occurrence of infectious complications after hepatectomy.
  • To determine optimal lactate level thresholds for preventing postoperative infections in patients undergoing liver resection.

Main Methods:

  • A cohort of 77 patients undergoing hepatectomy was divided into normal liver (NL) and chronic hepatitis and liver cirrhosis (CH + LC) groups.
  • The study assessed correlations between the highest intraoperative lactate level, Pringle maneuver duration, operative factors, and postoperative serum parameters.
  • Interactive dot diagrams were used to identify cut-off lactate values for predicting severe complications (Clavien-Dindo grade III or higher) and infections.

Main Results:

  • The highest intraoperative lactate level should be maintained below 44.0 mg/dL in the NL group to prevent infectious complications.
  • For the CH + LC group, the highest intraoperative lactate level should be kept below 29.0 mg/dL to mitigate infectious complication risk.
  • Specific lactate thresholds were identified with high sensitivity and specificity for predicting postoperative infectious complications.

Conclusions:

  • Controlling the highest intraoperative lactate level is crucial for preventing postoperative infectious complications after hepatectomy.
  • This strategy is particularly important in patients with chronic liver disease undergoing procedures involving the Pringle maneuver.
  • Maintaining low intraoperative lactate levels may help mitigate the adverse effects of reperfusion injury and improve patient outcomes.