Asthma is diagnosed when spirometry shows a FEV1/FVC ratio of less than 0.7 with a greater than 12% increase in FEV1 on spirometry with bronchodilation.
Asthma is diagnosed when spirometry shows a FEV1/FVC ratio of less than 0.7 with a greater than 12% increase in FEV1 on spirometry with bronchodilation.