Abstract

目的 评价钢圈加生物胶封堵法治疗兔肺气肿的有效性和可行性.方法 制备兔肺气肿模型16只,分为封堵组10只,对照组6只.封堵组兔行钢圈加生物胶法封堵两前叶支气管,分别测量兔气肿前、气肿后、术后1周及4周4个时间点2组的静态气道压(Pmax)、最大呼气流量(PEF)、呼气末肺容积(EEV)及血氧分压(PO2),并观察封堵组钢圈咳出(或移位)和肺萎陷情况.结果 封堵组的Pmax在气肿前、后分别为(20.0±1.3)和(17.1±1.4)cm H2O(1 cm H2O=0.098 kPa).术后1周时封堵组Pmax为(19.2±1.4)cm H2O,对照组为(17.1±1.5)cm H2O(F=6.68,P<0.05).术后4周时封堵组Pmax为(19.2±1.4)cm H2O,对照组为(16.6±1.2)cm H2O(F=12.10,P<0.01);封堵组EEV为(86±8)ml,对照组为(96±4)ml(F=5.72,P<0.05).封堵组封堵术后1周及4周Pmax均比气肿后高(P值均<0.01);气肿后EEV比气肿前增加(P<0.01),术后1周比气肿后减少(P<0.05).结论 应用钢圈加生物胶封堵法进行兔肺减容术,能改善肺功能,且这种作用能较长期存在。

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