The effect of heat-moisture exchanger and closed-circuit technique on airway climate during desflurane anesthesia

Chih Cherng Lu, Shung Tai Ho, Wen Jinn Liaw, Ruei Ming Chen, Ta Liang Chen, Chung Yuan Lin

研究成果: 雜誌貢獻文章同行評審

4 引文 斯高帕斯(Scopus)

摘要

Purpose: We assessed whether closed-circuit anesthesia (CCA) could provide a more favorable airway climate than semiclosed anesthesia (SCA), and we also determined the beneficial effect of heat moisture exchangers (HMEs) on the preservation of airway climate during desflurane anesthesia. Methods: Forty patients scheduled for colorectal surgery (n = 10 for each group) were randomized to receive a fresh gas flow of 250 or 3000 ml·min-1 with or without HMEs. Anesthesia was maintained by adjusting the inspired concentration of 6% desflurane. Absolute moisture and temperature of inspired gases were measured as the baseline value first at 5 min after tracheal intubation, and then at 10, 20, 45, 60, 90, and 120 min after the induction of anesthesia. Results: At 120 min, the inspiratory humidity and temperature were higher in CCA than in SCA. The HME led to major improvements of the humidity (from 22.1 to 35.7 mg H2O·l-1) and temperature (from 23.6°C to 31.5°C) of anesthetic gases in the CCA group. Conclusion: CCA was much more advantageous than SCA for maintaing the patient's airway climate during the 2-h study. The beneficial effect of HME on the airway climate should be emphasized, especially in patients undergoing general anesthesia.

原文英語
頁(從 - 到)7-12
頁數6
期刊Journal of Anesthesia
22
發行號1
DOIs
出版狀態已發佈 - 二月 2008

ASJC Scopus subject areas

  • 麻醉與疼痛醫學

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