Preoperative Volume Assessment Using Bioelectrical Impedance Analysis for Minimizing Blood Loss during Hepatic Resection

Introduction: Maintaining low central venous pressure (CVP) is an effective strategy to reduce blood loss during hepatic resection. As alternative measuring CVP, which requires the placement of a catheter, bioelectrical impedance analysis (BIA) noninvasive method recently used for monitoring volume status in critically ill patients. Methods: We investigated 192 patients who underwent resection from January 2017 December 2020. The ratio extracellular water:total body water (ECW/TBW), as index status, was measured using InBody S10 (Biospace, Seoul, Korea). correlation between ECW/TBW and CVP determined, their influences on operative outcomes were analyzed. Results: showed significant correlation; <0.378 correlated with <5 mmHg (R2=0.839, P<0.001). Estimated (EBL) significantly increased ≥0.378 compared those (508±321 vs. 324±193, mL, Identified predictors EBL ≥500 mL time (odds [OR], 1.008; 95% confidence interval [CI], 1.001–1.015; P=0.021) (OR, 0.263; CI, 0.121-0.572; P=0.001). Conclusions: BIA can be utilized preoperative assessment minimize