Reference spirometric values using techniques and equipment that meet ATS recommendations.
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This study produced predicted values for forced vital capacity and forced expiratory volume in one second that were almost identical to those predicted by Morris and associates when the data from their study were modified to be compatible with the back extrapolation technique recommended by the ATS.Abstract:
Forced expiratory volumes and flows were measured in 251 healthy nonsmoking men and women using techniques and equipment that meet American Thoracic Society (ATS) recommendations. Linear regression equations using height and age alone predict spirometric parameters as well as more complex equations using additional variables. Single values for 95% confidence intervals are acceptable and should replace the commonly used method of subtracting 20% to determine the lower limit of normal for a predicted value. Our study produced predicted values for forced vital capacity and forced expiratory volume in one second that were almost identical to those predicted by Morris and associates (1) when the data from their study were modified to be compatible with the back extrapolation technique recommended by the ATS. The study of Morris and colleagues was performed at sea level in rural subjects, whereas ours was performed at an altitude of 1,400 m in urban subjects. Either the present study or the study of Morris and co-workers, modified to back extrapolation, could be recommended for predicting normal values.read more
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Journal ArticleDOI
Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome.
Roy G. Brower,Michael A. Matthay,Alan H. Morris,David A. Schoenfeld,B. Taylor Thompson,Arthur P. Wheeler +5 more
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Lung volumes and forced ventilatory flows
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Philip H. Quanjer,Sanja Stanojevic,Tim J Cole,Xaver Baur,Graham L. Hall,Bruce H. Culver,Paul L. Enright,John L. Hankinson,Mary S.M. Ip,Jinping Zheng,Janet Stocks +10 more
TL;DR: Spirometric prediction equations for the 3–95-age range are now available that include appropriate age-dependent lower limits of normal for spirometric indices, which can be applied globally to different ethnic groups.
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Spirometric Reference Values from a Sample of the General U.S. Population
TL;DR: Hankinson and Odencrantz as mentioned in this paper used a piecewise polynomial model with age and height as predictors to derive reference values for three race/ethnic groups and should prove useful for diagnostic and research purposes.
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The cardiovascular health study: Design and rationale
Linda P. Fried,Nemat O. Borhani,Paul L. Enright,Curt D. Furberg,Julius M. Gardin,Richard A. Kronmal,Lewis H. Kuller,Teri A. Manolio,Maurice B. Mittelmark,Anne B. Newman,Daniel H. O'Leary,Bruce M. Psaty,Pentti M. Rautaharju,Russell P. Tracy,Philip G. Weiler +14 more
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