Risk Factors for Perioperative Body Temperature Decrease in Burn Surgery

Abstract

 Objective: To investigate the risk factors for perioperative body temperature decrease in burn surgery.
 Methods: A single center, retrospective observational study was performed. The clinical records of 150 surgeries performed between April 2014 and December 2023 were reviewed. Surgeries were categorized into two groups based on a perioperative body temperature decrease of －1.5℃, and logistic regression analysis was conducted to identify independent risk factors.
 Results: Forty-one surgeries showed a perioperative body temperature decrease greater than －1.5℃. The decrease in body temperature group had significantly larger exposed area, longer surgical duration, and received more fluid volume than the non-decrease in body temperature group. Univariate logistic regression analysis identified all three items as risk factors. The approximate cutoff values were 25% total exposed surface area, 2 hours surgical duration, and 2l total fluid volume. The rate of perioperative body temperature decrease increased proportionally with the number of cutoff value matches: 6.8% for 0 matches, 23.4% for one match, 34.1% for two matches, and 72.2% for three matches.
 Conclusions: Larger exposed area, longer surgical duration, and higher total fluid volume are associated with increased risk of perioperative body temperature decrease in burn surgery.