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- W1990990168 abstract "We have examined the effect of airway wall thickening, loss of lung recoil, and airway smooth muscle shortening on the increase in airway resistance using a model of the human tracheobronchial tree. The values for airway wall thickening were determined morphometrically on the postmortem or surgically resected lungs of normal subjects, patients with moderate chronic obstructive pulmonary disease, and patients with severe asthma. Loss of recoil was simulated by deflating airways along their pressure-area curves by 1 to 3 cm H2O. Values of smooth muscle shortening between 20 and 40% were used in the model to generate sigmoldal-shaped “dose-response” curves. The analysis shows that moderate amounts of airway wall thickening, which have little effect on baseline resistance, can profoundly affect the airway narrowing caused by smooth muscle shortening—especially if the wall thickening is localized in peripheral airways. The combination of a loss of recoil and airway wall thickening are more than additive In their effect on simulated airway responsiveness. We conclude that airway wall thickening and a loss of lung recoil can partially explain the airway hyperresponsiveness observed in patients with chronic obstructive lung disease and asthma." @default.
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- W1990990168 date "1992-06-01" @default.
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- W1990990168 title "A Model of Airway Narrowing in Asthma and in Chronic Obstructive Pulmonary Disease" @default.
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- W1990990168 doi "https://doi.org/10.1164/ajrccm/145.6.1251" @default.
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