… airflow obstruction at baseline would be unlikely to show diagnostic instability or diagnostic
… decline in frequency as the FEV 1 /FVC ratio falls further below the diagnostic threshold. …

… are major factors in severe obstruction. Lesser degrees of emphysema may be … airflow
obstruction. Emphysema, the dominant lesion in patients with severe chronic airflow obstruction, …

… basis of wheeziness and airflow obstruction, the term asthma … , to consider the diagnostic
errors which frequently arise, and … at least two distinct patterns of instability-the morning dipper, …

… diagnostic accuracy of ultrasound-based capnovolumetry for the identification of airway
obstruction… were included in the diagnostic study. As reference standard, the presence of airway …

… Chronic obstructive pulmonary disease (COPD) is heterogeneous, but … airflow obstruction
(AFO) is fundamental to diagnosis. We studied AFO consistency from initial diagnosis and …

… may be due to insufficiently standardized diagnostic tools. Endoscopic techniques are possibly
… as having an equal diagnostic impact as bronchoscopy for tracheal instability, and should …

… obstruction in the complexity of airflow patterns, and 2) to evaluate the clinical potential of
the ApEnQ in the diagnosis … ) and is prone to instabilities and exacerbations, whereas higher …

… However, a 10% change in FEV 1 with bronchodilation in children has diagnostic specificity
for asthma 15 and an association with asthma instability 16 in children. Because FEV 1 …

… Using FEV 1 /FEV 6 <LLN or GOLD stage 2-4 as the criterion for airflow obstruction reduces
inconsistencies in the diagnosis of mild COPD. Further improvement could be obtained by …

… higher in smokers with airflow obstruction than in healthy … be affected by peripheral airways
obstruction, 14 displayed a … has limitations; peripheral airway instability and loss of elastic …