Clinical applications of forced oscillation to assess peripheral airway function

被引:190
作者
Goldman, MD [1 ]
Saadeh, C
Ross, D
机构
[1] Univ Calif Los Angeles, Dept Med, Hlth Sci Ctr, Los Angeles, CA 90095 USA
[2] Amarillo Ctr Clin Res, Amarillo, TX 79124 USA
关键词
respiratory resistance; respiratory reactance;
D O I
10.1016/j.resp.2005.05.026
中图分类号
Q4 [生理学];
学科分类号
071003 [生理学];
摘要
Forced oscillation applies external pressures to the respiratory system to measure respiratory impedance. Impedance of larger central airways may be dissected from that of peripheral airways using multiple oscillation frequencies. Respiratory impedance is calculated by computer-assisted methods that yield separate resistive and reactive components. The reactive component includes respiratory system capacitative and inertive properties, which may be separately visualized for clinical purposes using resonance as a rough dividing line. Low oscillation frequencies comprise those below resonance, and relate most prominently to capacitative properties of peripheral airways. High oscillation frequencies comprise those greater than resonance, which relate most prominently to inertial properties of larger central airways. Measurements of resistance and reactance in patients with peripheral airway disease, before and after therapeutic intervention, manifest characteristic patterns of response in low frequency resistance and reactance measures that appear to be closely correlated with each other. In contrast, changes in large central airways manifest resistance change uniformly over low and high frequencies. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:179 / 194
页数:16
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