Prevalence and Multivariable Factors Associated With Inadvertent Intraoperative Hypothermia During Robot-Assisted Radical Cystectomy Surgery: A Multicenter Retrospective Study

To analyze the prevalence and factors related to inadvertent intraoperative hypothermia (IOH) in adults undergoing elective robot-assisted radical cystectomy surgery (RARC) under general anesthesia. A retrospective study observed data from June 2022 to August 2023 in two large teaching hospital. Collecting core temperature and potential influencing factors through electronic medical records. Univariate and multivariate logistic regression analyses were used to identify independent risk factors of IOH. 690 patients were included finally, with 266 (38.6) patients suffered IOH. The factors related to IOH embraced anesthesia induction time (odds ratio [OR]: 0.523; 95% confidence interval [CI]: 0.372-0.735; p < 0.05); age (OR: 0.984; CI: 0.970-0.970; p < 0.05); smoking (OR: 3.489; CI: 1.999-6.089; p < 0.05); intraoperative fluid volume (OR: 0.999; CI: 0.999-0.999; p < 0.05); surgery duration (OR: 0.996; CI: 0.994-0.998; p < 0.05); and baseline core temperature (OR: 1.859; CI: 1.165-2.965; p < 0.05). We emphasize the relatively high prevalence of IOH during elective RARC under general anesthesia and identify related factors, including lower baseline core temperature, age, longer surgery duration, surgery in the morning, larger intraoperative fluid volume, and smoking.