UNASSIGNED: Expiratory flow limitation (EFL) during tidal breathing is common in @entity1 with severe @entity1030 , and a major determinant of dynamic hyperinflation and exercise limitation. The negative expiratory pressure (NEP) technique has been the gold standard to detect EFL, while the forced oscillation technique (FOT) has also been reported to detect it. However, the association of FOT with NEP is not fully understood. We assessed whether broadband frequency FOT would predict the presence of EFL measured by NEP. FOT, NEP, and spirometry were performed in 51 @entity1 with @entity1030 . The extent of @entity2415 was measured by high-resolution computed tomography and scored. Fifteen @entity1 were classified into the EFL-positive group and 36 into the EFL-negative group. In multivariate logistic regression analysis, EFL was independently predicted by @entity2415 score, forced vital capacity, and whole-breath respiratory system reactance at 5Hz (X5). The receiver operator characteristic curve analysis revealed that inspiratory X5 best predicted EFL-positivity. X5-related forced oscillatory parameters are useful for detecting EFL in the management of @entity1030 .

Association of the forced oscillation technique with negative expiratory pressure in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity2415 :: ('MESH:D004646', 'Disease') :: ['emphysema'] @entity1030 :: ('MESH:D029424', 'Disease') :: ['COPD']
@entity1030 :: (MESH:D029424,Disease) :: ['COPD']
