• Yukihiko Tomita, Masataka Kamei, Ken Kuwajima, Yuzuru Inatomi, Takuma Maeda, and Yoshihiko Onishi.
• Department of Anesthesiology, National Cerebral and Cardiovascular Center, Suita 565-0873.
• Masui. 2012 Nov 1; 61 (11): 1234-8.

BackgroundInaccurate measurements of body temperature might be associated with complications during the perioperative period. We conducted a retrospective cohort study to compare the bladder temperature and the tympanic membrane temperature in patients undergoing open repair of abdominal aortic aneurysm.MethodsFifteen adult patients who had undergone general anesthesia with/without epidural anesthesia were included in the present cohort. The bladder and the tympanic temperatures were simultaneously recorded at 6 points during surgery. One-way repeated measures ANOVA and Bland-Altman analysis were performed to assess statistical significance. The two-tailed P values less than 0.05 were considered statistically significant.ResultsNo difference was found between the bladder and the tympanic temperatures before abdominal aortic cross-clamping. However, during and after cross-clamping, the bladder temperature values were likely to be lower compared with the tympanic values. The average temperature difference (+/- 2 SD) was 0.4 degrees C (+/- 1.1 degrees C) (95% CI: -1.21-0.78).ConclusionsThe tympanic membrane might be a reliable site for core body temperature measurement in abdominal aortic aneurysm surgery patients.

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