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Effects of sustained inflation on lung re-expansion after endotracheal suctioning in sheep with acute lung injury

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF EMERGENCY MEDICINE
Issue:
5
DOI:
10.3760/j.issn:1671-0282.2004.05.004
Key Word:
呼吸窘迫综合征;吸痰;控制性肺膨胀;复张容积

Abstract: 目的探讨控制性肺膨胀(sustained inflation,SI)对急性肺损伤(acute lung injury,ALI)绵羊吸痰后肺复张容积的影响.方法内毒素静脉注射复制绵羊ALI模型,进行两组吸痰,SI组吸痰后立即予以一次SI,用P-V曲线法测定吸痰前后肺复张容积,同时观察吸痰前后动脉血氧合的变化.结果非SI组吸痰前肺复张容积(98.8±77.6)ml,吸痰后3 min显著降低(64.3 ml±53.0 ml,P<0.05).SI组吸痰后3 min、15 min肺复张容积分别为(128.1±78.0)ml和(119.4±61.5)ml,均较吸痰前(68.0±50.3)ml显著增加(P<0.05).非SI组动脉血氧分压(PaO2)在吸痰前为(82.2±46.9)mm Hg,叹痰后15 min显著降低为(71.2±30.3)mm Hg(P<0.05);SI组吸痰前后PaO2无明显变化.结论吸痰可加重肺泡塌陷,SI可明显促进肺泡复张.

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