Factors Influencing Intraoperative Hypothermia in Patients Undergoing Percutaneous Nephrolithotomy

To analyze the influencing factors for intraoperative hypothermia in patients undergoing percutaneous nephrolithotomy (PCNL).

Prospective observational study.

A total of 236 patients undergoing percutaneous nephrolithotomy (PCNL) at a tertiary hospital from January 6 to April 6, 2025, were selected as the subjects of this study. Patients were divided into hypothermia and non-hypothermia groups based on whether they experienced hypothermia during surgery. Univariate and binary logistic regression analysis were used to screen for influencing factors associated with intraoperative hypothermia.

136 patients (57.6%) experienced intraoperative hypothermia, while 100 patients (42.4%) did not. Univariate analysis revealed that there were statistically significant differences between the hypothermia group and non-hypothermia group in terms of gender, BMI, duration of anesthesia, room temperature, number of tracts, preoperative warming measures, and intraoperative warming measures. Binary logistic regression analysis indicated that gender (OR=2.204, 95%CI: 1.164~4.173, P=0.015), BMI (OR=1.202, 95%CI: 1.096~1.317, P<0.001), number of tracts (OR=0.276, 95%CI: 0.123~0.619, P=0.002), and comprehensive preoperative warming measures (OR=3.041, 95%CI: 1.016~9.097, P=0.047) were independent influencing factors for intraoperative hypothermia in patients undergoing percutaneous nephrolithotomy.

The incidence of intraoperative hypothermia in patients undergoing percutaneous nephrolithotomy is relatively high, and its occurrence is associated with gender, BMI, the number of surgical tracts, preoperative warming measures and intraoperative warming measures.