title: [Skewed shape of the maximal expiratory flow volume curve and bronchoscopic signs of lower airway collapse in chronic obstructive pulmonary disease].
abstract: We compared endoscopical signs of airway collapse seen during tidal breathing with the shape of the maximal-expiratory flow volume curve and selected functional parameters in 16 cases of chronic obstructive pulmonary disease (COPD). Depending on localization of airway collapse the group was divided into two. 12 patients with central collapse involving the trachea and main stem bronchi formed group A. The remaining 4 patients with peripheral collapse (lobar and segmental bronchi) formed group B. In the former group the MEFV curve had a characteristic biphasic shape. The shape of this curve in the group B patients was more curvilinear. In group A patients an increase of Raw, TGV and fall of FEV1 was seen which could not be demonstrated in group B. The biphasic shape of the MEFV curve seems to be characteristic of airway collapse, but due to a small number of patients included we can not assess the specificity of it in diagnosing airway collapse.
authors.forename: L
authors.initials: L
authors.lastname: Radwan
authors.forename: M
authors.initials: M
authors.lastname: Pirozyński
authors.forename: J
authors.initials: J
authors.lastname: Müller
mesh_terms: D000328:Adult; D000368:Aged; D001999:Bronchoscopy; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis / Q000503:physiopathology*; D008297:Male; D008449:Maximal Expiratory Flow-Volume Curves / Q000502:physiology; D008875:Middle Aged
vernacular_title: Kształt krzywej maksymalnego przepływu wydechowego i objetości płuc a bronchoskopowe objawy zapadania dróg oddechowych u chorych z przewlekła obturacyjna choroba płuc.