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Chinese Journal of Endourology(Electronic Edition) ›› 2021, Vol. 15 ›› Issue (05): 396-400. doi: 10.3877/cma.j.issn.1674-3253.2021.05.008

• Clinical Research • Previous Articles     Next Articles

Effect of intraoperative hypothermia on postoperative immune function and long-term recurrence in patients with non-muscle invasion bladder cancer in plateau area

Hongxia Yang1,(), Xihua Long1, Zhaoxia Luo1   

  1. 1. Department of Urology, Qinghai University Affiliated Hospital, Qinghai 810001, China
  • Received:2021-01-26 Online:2021-10-01 Published:2022-04-27
  • Contact: Hongxia Yang

Abstract:

Objective

To explore the effect of intraoperative hypothermia on postoperative immune function and long-term recurrence in patients with non-muscle invasion bladder cancer (NMIBC).

Methods

This study was a prospective study which included 337 NMIBC patients meeting the conditions between January 2015, and December 2019. Patients were divided into hypothermia group and control group according to the lowest body temperature (36℃) during operation. Peripheral venous blood was taken to detect Thl/Th2 intracellular cytokines at 1 h before induction of anesthesia (T0), the end of surgery (T1) and 24 h after operation (T2). The main form of follow-up was telephone follow-up. Endpoint was bladder cancer recurrence.

Results

Of the 337 participants, 158 cases (46.9%) showed intraoperative hypothermia. Compared with the control group, the hypothermia group had a significantly lower level of IFN-γ and IFN-γ/IL-4 at T1, and a significantly lower level of IFN-γand IFN-γ/IL-4 and a significantly higher level of IL-4 at T2. In the control group, 102 patients had recurrence of bladder cancer, and the recurrence-free survival time was 15 (3-48) months. In the hypothermia group, 97 patients had bladder cancer recurrence, and the recurrence-free survival time was 12 (3-60) months. There was no significant difference in the recurrence-free survival curve between the 2 groups (χ2=0.533, P=0.465). For patients with T1, 28 patients had recurrence of bladder cancer, and the recurrence-free survival time was 10.5(3-48) months in the control group, 36 patients had recurrence of bladder cancer, and the recurrence-free survival time was 10.5(3-45)months in the hypothermia group. There was a significant difference in the recurrence-free survival curves between the 2 groups (χ2=5.261, P=0.022). For non-T1 patients, 74 patients had bladder cancer recurrence in the control group, and the recurrence-free survival time was 15(3-48) months. 61 patients had bladder cancer recurrence in the hypothermia group, and the recurrence-free survival time was 12(3-60) months. There was no significant difference in the recurrence-free survival curve between the 2 groups (χ2=0.199, P=0.656). Multivariate Cox regression analysis showed that intraoperative hypothermia was one of the independent risk factors for recurrence [HR:1.153(1.055-3.984), P=0.039].

Conclusions

Intraoperative hypothermia inhibits postoperative cellular immune function in patients with NMIBC is one of risk factors for postoperative recurrence in NMIBC patients with T1. Intraoperative warming has a certain significance for further improving the prognosis of patients with NMIBC.

Key words: Bladder cancer, Hypothermia, Immune function, Recurrence, Prospective study

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