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- Title
Effect of electrically heated humidifier on intraoperative core body temperature decrease in elderly patients: a prospective observational study.
- Authors
Hyungseok Seo; Kyungmi Kim; Eun-a Oh; Yeon-jin Moon; Young-Kug Kim; Jai-Hyun Hwang
- Abstract
Background: Core body temperature (TC) can decrease during general anesthesia. Particularly in elderly patients, more aggressive strategies to prevent intraoperative hypothermia may be required. Here, we investigated the effect of a heated humidifier on intraoperative TC decrease in the elderly. Methods: Twenty-four elderly patients were randomly assigned into two groups: those who used a heated humidifier (group H) and those who used a conventional ventilator circuit with a heat moisture exchanger (group C). TC was measured continuously at the esophagus at several time-points during surgery. Results: In group C, TC significantly decreased 90 minutes after skin incision (P < 0.001), while significant differences were not noted in group H during surgery. Comparing the two groups, TC decreased more in group C than in group H at 60, 90, 120, and 150 minutes after skin incision (group C vs. group H: −0.6°C vs. −0.3°C, P = 0.025; −0.7°C vs. −0.4°C, P = 0.012; −0.9°C vs. −0.4°C, P = 0.006; and −1.0°C vs. −0.5°C, P = 0.013, respectively). There were no significant differences between the two groups for any other parameters. Conclusions: A heated humidifier is more effective in preventing intraoperative TC decrease in elderly patients than a heat moisture exchanger. However, further studies with a larger population are required to substantiate its clinical use.
- Subjects
THERMISTORS; ISOTHERMAL processes; OLDER people; MEDICAL care; PAIN medicine
- Publication
Anesthesia & Pain Medicine, 2016, Vol 11, Issue 2, p211
- ISSN
1975-5171
- Publication type
Article
- DOI
10.17085/apm.2016.11.2.211