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전신마취 시 사용한 열선내장형 가온 가습 호흡회로의 비교평가
박해균 ( Hae Gyun Park ),임정식 ( Jung Sik Im ),박정선 ( Jeoung Sun Park ),조재근 ( Jae Keun Joe ),이상석 ( Sang Seok Lee ),연준흠 ( Jun Heum Yon ),홍기혁 ( Ki Hyuk Hong ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.57 No.1
Background: Dry and cold anesthetic gas deteriorates patient`s respiratory function and body heat balance. We examined whether a humidifier with heated wire circuit might maintain core temperature and humidity of inspired gas in patient undergoing general anesthesia. Methods: We enrolled forty ASA physical status I, II patients under general anesthesia for this study. We allocated the patients randomly into two groups with (experimental group) or without (control group) Humitube(R) anesthesia circuit, which delivered heated and humidified inspired anesthetic gases. We recorded the temperatures and humidity of the inspired gases throughout the surgery. Results: The temperatures and relative humidity of the inspired gases in experimental group were significantly greater compared to control group (36.2±0.9℃, 89.5±4.8% vs. 30.4±1.8℃, 37.9±5.9%, P<0.05) during anesthesia. The core temperatures in experimental group were significantly greater compared to control group (36.1±0.3℃ vs. 35.7±0.1℃, P<0.05) during anesthesia. Conclusions: A humidifier with heated wire system for anesthesia breathing circuit is helpful to maintain core temperature and adequate humidity. (Korean J Anesthesiol 2009; 57: 32~7)