Clinical assessment of the degree and type of lung function damage, treatment effect and disease development in patients with respiratory diseases;
Providing the basis for the definitive diagnosis of airway hyperresponsiveness such as asthma, assessment of the severity of the disease, and observation of the efficacy of the treatment;
Determination of the location and severity of the obstruction in common obstructive lung diseases;
Understanding of the function of the small airways state, which is conducive to the early diagnosis of airway diseases;
differential diagnosis of clinical symptoms, mainly the causes of dyspnea;
assessment of the risk of surgical procedures, especially thoracic and abdominal surgeries, and surgeries in elderly patients, and the occurrence of postoperative complications;
assessment of the degree of impairment of lung function in patients with occupational diseases.
Main Tests: Lung ventilation function, ventilation function, specifically slow spirometry, exertion spirometry, diastolic test, minute maximal ventilation, diffusion test, residual air test