Chan E D, Irvin C G
Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Health Sciences Center, Denver.
Chest. 1995 Mar;107(3):856-9. doi: 10.1378/chest.107.3.856.
The detection of collapsible airways, which may be a component of asthma and emphysema, has important therapeutic implications. We describe a patient with significant airways collapse contributing to his airflow limitation and discuss how collapsible airways can be assessed by the volume difference between what exits the lung as determined by a spirometer and the volume compressed as measured by the plethysmograph. More simply, a large volume difference between the slow and forced vital capacity (SVC-FVC), easily obtained from spirometry, may be used as a surrogate index of airway collapse.
可塌陷气道的检测具有重要的治疗意义，它可能是哮喘和肺气肿的一个组成部分。我们描述了一位因严重气道塌陷导致气流受限的患者，并讨论了如何通过肺活量计测定的肺呼出量与体积描记器测量的压缩量之间的体积差异来评估可塌陷气道。更简单地说，从肺量计中容易获得的慢肺活量与用力肺活量之间的巨大差异（SVC-FVC），可用作气道塌陷的替代指标。
