Lung function tests for what diseases

The lung function test includes lung ventilation function examination. After this examination, you can initially diagnose whether there are diseases with ventilation dysfunction, such as obstructive emphysema, bronchial asthma, etc. Bronchial dilation test uses specific bronchodilators and is applied to bronchial tissues., and then test the reversibility of the airway, which is suitable for the early diagnosis of chronic bronchitis, chronic obstructive pulmonary disease and other diseases. Lung volume examination can evaluate the pulmonary function of the examinee through lung volume, lung diffusion function can reflect the gas exchange capacity of alveolar capillary membrane, lung diffusion function can affect the oxygen supply capacity of artery, and it has early diagnosis significance for pulmonary infectious diseases, pulmonary interstitial diseases, alveolar proteinosis and other diseases.