在模拟通风过程中被动活性炭麻醉气体捕获系统的效率
Christin Wenzel1, Bernd Flamm1, Torsten Loop1
1Department of Anesthesiology and Critical Care, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
British journal of anaesthesia
|July 3, 2024
概括
被动流过器可以从麻醉废气中去除sevoflurane,但它们的效率因材料和和而异. 将这些过器与清洁系统相结合,可以帮助防止环境空气污染.
科学领域:
- 麻醉学 麻醉学
- 环境健康 环境健康
- 材料科学 材料科学 材料科学
背景情况:
- 越来越多的人对被动流量过系统感兴趣,用于从麻醉机的废气中去除西沃弗,以减少挥发性麻醉剂的环境影响.
- 目前的系统使用化学活性炭,对其性能特征的数据有限.
- 假设:过器的效率取决于所使用的特定过材料.
研究的目的:
- 为了评估三种不同的碳过材料的结合能力和吸附效率,用于sevoflurane.
- 为了确定过器和度和新鲜气体流对sevoflurane突破的影响.
- 在模拟通风和咳期间评估过器的阻力压力.
主要方法:
- 测试了CONTRAfluran®,FlurAbsorb®和麻醉剂过器AAF633.3的结合能力.
- 在不同和度和新鲜气体流量的模拟通风下测量吸附效率和阻力压力.
- 在临床麻醉工作站的过气体中监测sevoflurane度.
主要成果:
- 在CONTRAfluran/FlurAbsorb的184毫升和AAF633.3的276毫升和点上发生了sevoflurane突破 (>10 ppm).
- 在模拟通风过程中,FlurAbsorb在所有和阶段都允许sevoflurane突破 (>10 ppm),而CONTRAfluran和AAF633在高新鲜气体流量 (10 L/min) 的最大和时才超过这一点.
- 过器阻力在通风过程中是最小的,但在模拟咳时显著增加;在七个工作站中,两个工作站的排气中,sevoflurane水平超过了10 ppm.
结论:
- 被动碳过器在防止黄释放方面的有效性取决于过材料和新鲜气体的流量.
- 将这些被动过器与活性麻醉气体清理系统相结合,提供了一种策略,以减轻来自赛沃氨排放的环境空气污染.
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