Hyperventilation accelerates rise in arterial blood concentrations of sevoflurane in gynecologic patients

Chih Cherng Lu, Tso Chou Lin, Che Hao Hsu, Mu Hsien Yu, Chih Hung Ku, Ta Liang Chen, Ruei Ming Chen, Shung Tai Ho

研究成果: 雜誌貢獻文章同行評審

2 引文 斯高帕斯(Scopus)

摘要

Purpose: We investigated whether ventilation volumes affected arterial blood sevoflurane concentration (A sev) and its uptake into the body during general anesthesia. Methods: Thirty female patients undergoing elective gynecologic surgery were randomly allocated into three groups: hyperventilation, normal ventilation, and hypoventilation. Inspiratory (CIsev) and end-tidal (sev) sevoflurane concentrations were routinely measured by infrared analysis, and A sev were analyzed by gas chromatography for 40 min after intubation. Cardiac index and total peripheral vascular resistance were measured with a Finometer. Results: During the first 10 min after sevoflurane administration, A sev in the hyperventilation group was the highest and differed significantly from those in the normal ventilation group, followed by those in the hypoventilation group. In addition, hyperventilation significantly increased the slope of A sev over time in the first 5 min, but there were no differences in slopes in the 5-10, 10-20, and 20-40 min periods, which indicates no difference in sevoflurane bodily uptake among the three groups after 5 min. Conclusion: Hyperventilation accelerated the rate of A sev increase immediately after sevoflurane administration, which was time dependent with respect to different alveolar ventilation levels.

原文英語
頁(從 - 到)35-42
頁數8
期刊Journal of Anesthesia
27
發行號1
DOIs
出版狀態已發佈 - 二月 2013

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

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