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压力支通风改善了儿童吸入麻醉诱导期间的通风:一个试点研究
Viviane Lauret1, Claude Guerin2, Sirine Boussena3
1Hospices Civils de Lyon, Département d'anesthésie, Hôpital Femme Mère Enfant, F - 69500 Bron, France.
阳性终端呼气压 (PEEP) 和压力支通风 (PSV) 在麻醉诱导期间影响儿童的肺通风. PSV可能有助于保持肺体积,独立于潮体积变化.
科学领域:
- 儿科麻醉学 儿科麻醉学
- 呼吸系统生理学 呼吸系统生理学
- 医疗器械技术 医疗器械技术
背景情况:
- 在儿童中通过吸入诱导麻醉需要仔细管理肺机械.
- 了解正极呼气压 (PEEP) 和压力支通风 (PSV) 的影响对于优化通风策略至关重要.
- 电阻断层扫描 (EIT) 提供了一种非侵入性方法来评估肺体积和通风分布.
研究的目的:
- 评估PEEP和PSV在儿科患者吸入麻醉诱导期间对肺体积和通风分布的影响.
- 使用EIT和通风器数据来比较不同的PEEP和PSV设置.
主要方法:
- 在接受吸入麻醉诱导的儿童中进行了一项前性观察试点研究.
- 电阻断层扫描 (EIT) 用于监测潮体积 (TV),背部通风分数和呼吸末端肺阻抗 (EELI).
- 顺序应用自发呼吸用面具,PEEP 4 cmH2O和PSV (4-7 cmH2O高于PEEP) 进行.
主要成果:
- 分析了20名儿童;电视在不同设置中没有显著差异.
- 与单独PEEP相比,PSV导致EELI的增加更大 (p=0.005).
- 肺透气的背部部分随着PSV水平的增加而下降 (p<0.001).
结论:
- 呼吸机设置在儿科吸入麻醉诱导期间显著影响肺部通风.
- 在这种人群中,PSV可能有助于恢复最终呼气肺体积,而不依赖于潮体积变化.
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