Effect of electrically heated humidifier on intraoperative core body temperature decrease in elderly patients: a prospective observational study.
10.17085/apm.2016.11.2.211
- Author:
Hyungseok SEO
1
;
Kyungmi KIM
;
Eun A OH
;
Yeon Jin MOON
;
Young Kug KIM
;
Jai Hyun HWANG
Author Information
1. Department of Anesthesiolgoy and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. jhhwang@amc.seoul.kr
- Publication Type:Original Article
- Keywords:
Body temperature;
Closed circuit anesthesia;
Heating;
Humidity;
Hypothermia
- MeSH:
Aged*;
Anesthesia, Closed-Circuit;
Anesthesia, General;
Body Temperature*;
Esophagus;
Heating;
Hot Temperature*;
Humans;
Humidity;
Hypothermia;
Observational Study*;
Prospective Studies*;
Skin;
Ventilators, Mechanical
- From:Anesthesia and Pain Medicine
2016;11(2):211-216
- CountryRepublic of Korea
- Language:English
-
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℃ vs. -0.3℃, P = 0.025; -0.7℃ vs. -0.4℃, P = 0.012; -0.9℃ vs. -0.4℃, P = 0.006; and -1.0℃ vs. -0.5℃, 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.
