PT - JOURNAL ARTICLE AU - Lorino, AM AU - Zerah, F AU - Mariette, C AU - Harf, A AU - Lorino, H TI -阻塞性患者的呼吸阻力阻抗:线性回归分析对粘弹性模型DP - 1997年1月01 TA -欧洲呼吸杂志》第六PG - 150 - 155 - 10的IP - 1 4099 - //www.qdcxjkg.com/content/10/1/150.short 4100 - //www.qdcxjkg.com/content/10/1/150.full所以欧元和J1997 1月01;本研究的目的是测试一个简单的两段模型来描述阻塞性患者电阻阻抗的频率依赖性的能力，并调查从该模型导出的参数的意义。这项研究在38名患者中进行，他们处于基础状态，吸入200微克沙丁胺醇。在4-32 Hz以上测量的阻抗数据由描述气体再分配的一般四参数粘弹性模型拟合，并由惯性部件完成。该模型得到了牛顿阻力(Rmin)和最大阻力(Rmax = Rmin +气体再分布引起的延迟阻力)。电阻阻抗数据也提交到4-16和17-32 Hz的频率范围内进行线性回归分析，分别得出在0 Hz (R0)外推的电阻阻抗和在32 Hz (R32)估计的电阻阻抗。R0和R32分别与Rmax和Rmin进行比较。通过这些参数的百分比变化(R0%、R32%、Rmax%和Rmin%)评估吸入沙丁胺醇的气道反应。显著的线性相关(p < 0.0001) were found between R0 and Rmax, R32 and Rmin, and R0% and Rmax%. Furthermore, the linear regression lines of R0 vs Rmax, and R0% vs Rmax%, were not significantly different from the identity line. These results demonstrate that resistive impedance extrapolated at zero frequency is equivalent to maximal resistive impedance, and can be proposed as an index, not only of the level of airway obstruction, but also of its reversibility.