Pulmonary function threshold for distinguishing ventilatory- and nonventilatory-limited patients with airflow obstruction
نویسندگان
چکیده
منابع مشابه
Pulmonary function impairment in patients with combined pulmonary fibrosis and emphysema with and without airflow obstruction
BACKGROUND The syndrome of combined pulmonary fibrosis and emphysema (CPFE) is a recently described entity associating upper-lobe emphysema and lower-lobe fibrosis. We sought to evaluate differences in pulmonary function between CPFE patients with and without airflow obstruction. SUBJECTS AND METHODS Thirty-one CPFE patients were divided into two groups according to the presence or absence of...
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The relation between citric acid cough threshold and airway hyperresponsiveness was investigated in 11 non-smoking patients with allergic asthma (mean FEV1 94% predicted) and 25 non-atopic smokers with chronic airflow obstruction (mean FEV1 65% predicted). Cough threshold was determined on two occasions by administering doubling concentrations of citric acid. Seven of the 11 asthmatic subjects ...
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BACKGROUND An obstructive defect is usual in bronchiectasis, but the pathophysiological basis of airflow obstruction remains uncertain. High resolution computed tomographic (CT) scanning now allows quantitation of static morphological abnormalities, as well as dynamic changes shown on expiratory CT scans. The aim of this study was to determine which static and dynamic structural abnormalities o...
متن کاملDeterminants of expiratory airflow in patients with chronic airways obstruction.
This paper examines the relationship between the intrathoracic and bronchial pressures and the flow time course during forceful expiration in patients with severe chronic airways obstruction and tracheobronchial collapse. After an initial peak flow, the flow rate (V) of forceful expirations usually fitted the patient's maximum expiratory flow volume (MEFV) curve. The great reduction in flow aft...
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ژورنال
عنوان ژورنال: Respiratory Medicine
سال: 1998
ISSN: 0954-6111
DOI: 10.1016/s0954-6111(98)90428-0