Assertion: obstruction | /r/HasProperty | fixed
Facets:
Source sentences:
text: Miller and Hyatt defined three classic patterns of flow-volume loop contours in patients with UAO, depending on the location of the obstruction and depending on whether the obstruction was fixed or variable.10,11 Fixed lesions are characterized by lack of changes in caliber during inhalation or exhalation and produce a constant degree of airflow limitation during the entire respiratory cycle.