Objective  To analyze influencing factors of intraoperative hypothermia in patients with gastrointestinal tumors.

  Methods  A total of 500 patients undergoing radical gastrectomy under general anesthesia were selected as study objects. The self-made intraoperative data registration form was used to collect the general information of the patients and the information related to the operation. Univariate and multivariate analyses were performed for these influencing factors.

  Results  Hypothermia occurred in 160 cases(32.0%, hypothermia group), and 340 cases (68.0%) without hypothermia were selected as non-hypothermia group. Univariate analysis showed that there were statistically significant differences in the incidence of age, body mass index (BMI), operation time, tumor type, operation method and preoperative temperature between hypothermia group and non-hypothermia group(P < 0.05). Multivariate analysis showed that age ≥ 60 years, BMI < 22 kg/m² and laparoscopic surgery were independent influencing factors for hypothermia in patients undergoing digestive tract tumor surgery (P < 0.05).

  Conclusion  The incidence of intraoperative hypothermia is high in patients with digestive tract tumors. Age, BMI and surgical methods are independent influencing factors for the occurrence of intraoperative hypothermia, and clinical measures should be taken to prevent it.