A simple method for assessing the validity of the esophageal balloon technique.
A simple method for assessing the validity of the esophageal balloon technique.
复制标题
评估食管球囊技术有效性的简单方法。
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Milic‐Emili
中科院分区：
文献类型：
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作者：
A. Baydur;P. Behrakis;W. Zin;M. Jaeger;J. Milic‐Emili
在10名受试者中，通过在呼气末阻塞气道并在随后的自发阻塞吸气努力期间测量食管（Δ Pes）和口腔压力（Δ Pm）的变化比率，在坐位、仰卧位和侧卧位测试了传统食管球囊技术作为胸膜压力测量方法的有效性。在静态穆勒机动中也进行了类似的测量。在这两项试验中，坐位和侧卧位的Δ Pes/Δ Pm值接近于1，而在仰卧位，在某些情况下发现与1存在实质性偏差。然而，通过将球囊重新定位到食管中的不同水平，即使在这些情况下，也可以发现Δ Pes/Δ Pm比率接近1的位点。没有明显的相位差之间的Δ Pes和Δ Pm被发现。我们得出结论，通过定位球囊根据“闭塞测试”的程序，有效的测量胸膜压力可以得到在所有的测试体位。
The validity of the conventional esophageal balloon technique as a measure of pleural pressure was tested in 10 subjects in sitting, supine, and lateral positions by occluding the airways at end-expiration and measuring the ratio of changes in esophageal (delta Pes) and mouth pressure (delta Pm) during the ensuing spontaneous occluded inspiratory efforts. Similar measurements were also made during static Mueller maneuvers. In both tests, delta Pes/delta Pm values were close to unity in sitting and lateral positions, whereas in the supine position, substantial deviations from unity were found in some instances. However, by repositioning the balloon to different levels in the esophagus, even in these instances a locus could be found where the delta Pes/delta Pm ratio was close to unity. No appreciable phase difference between delta Pes and delta Pm was found. We conclude that by positioning the balloon according to the "occlusion test" procedure, valid measurements of pleural pressure can be obtained in all the tested body positions.