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环甲膜通气物理学模型观察
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环甲膜通气物理学模型观察
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Journal Article
环甲膜通气物理学模型观察
2003
Overview
目的 评价环甲膜通气条件下通气压力和频率对模拟肺的胸内压、气道压和肺内压等有关参量的影响，探讨环甲膜通气物理数据及其安全性。方法 采用物理肺模型模拟环甲膜通气，当改变氧气工作压力和通气频率时，观察模型中的胸内压、气道压和肺内压数值变化。结果 在工作压力不变的情况下，通气频率增加，胸内负压升高，气道压和肺内压下降。工作压力超过3kg·cm^-2，通气频率较低时易引起胸内压、气道压和肺内压过度增高造成气压伤。结论 采用3kg·cm^-2工作压力，频率在15～30次·min^-1之间进行环甲膜通气是安全的。
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