脉冲振荡法测定慢性阻塞性肺病患者呼吸阻力

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脉冲振荡法(impulse oscillometry,IOS)是在强迫振荡技术(forced oscillometry technique,FOT)基础上发展起来的一种新的呼吸阻力测定方法。在静息呼吸下,测定不同脉冲频率下受检者呼吸阻力的变化,并由此分别计算粘性阻力、弹性阻力和惯性阻力,IOS还能区别大气道和小气道阻力。慢性阻塞性肺病(COPD)的特征是慢性气流阻塞,致气道阻力升高,即
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