Assessing bronchodilator response by changes in per cent predicted forced expiratory volume in one second
نویسندگان
چکیده
منابع مشابه
Effort and the forced expiratory volume in one second (FEV).
1. The relationship between volumes expired and the maximum intrathoracic pressures developed within the first second of expiration was examined in a group of healthy subjects and patients with airways obstruction who exhaled with varying degrees of effort. 2. The body plethysmographic method was used to ensure that expirations started from total lung capacity. 3. Three different types of volum...
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Numerous epidemiological surveys have tried to evaluate the effects of exposures relevant to pulmonary disease.' A number of studies have analysed forced expiratory volume in one second (FEVI) using linear regression analysis, thus enabling adjustment for age, height, and sex as well as potential confounding variables. Within the last few years, studies analysing dichotomous FEV, variables with...
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We compared the structure of the membranous and respiratory bronchioles of resected lungs from 111 patients with a normal predicted forced expiratory volume in one second (FEV1) to the structure of these airways from 45 patients with an FEV1 reduced below the 95% confidence limits for height and age. Membranous and respiratory bronchioles of less than 2 mm in internal diameter were counted and ...
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Published prediction equations for lung function differ considerably, but the components of population variation responsible for the differences are unknown. Data were analysed for 6,323 never-smoking adults who did not report wheeze or asthma, from 42 centres participating in the European Community Respiratory Health Survey. Means and components of variance were estimated for males and females...
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Skinner, C. and Palmer, K. N. V. (1974). Thorax, 29, 574-577. Changes in specific airways conductance and forced expiratory volume in one second after a bronchodilator in normal subjects and patients with airways obstruction. Specific conductance (SGaw) and the forced expiratory volume in one second (FEVY) were measured in 10 normal, 10 asthmatic, and 10 obstructive bronchitic subjects before a...
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ژورنال
عنوان ژورنال: Journal of Investigative Medicine
سال: 2021
ISSN: 1081-5589,1708-8267
DOI: 10.1136/jim-2020-001663