Why is fev1 decrease in asthma

In: StatPearls. Updated September 14, Symptoms and markers of symptom severity in asthma--content validity of the asthma symptom diary. Health Qual Life Outcomes. National Heart, Lung, and Blood Institute.

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Pellagrino R, Viegi G, et al. Interpretative strategies for lung function tests. Eur Respir J ; Response of lung volumes to inhaled salbutamol in a large population of patients with severe hyperinflation. Subjects with asthma had a greater rate of decline in FEV1 p less than 0. The mean loss of FEV1 in males of 1.