1, what is a pulmonary function test? A: Simply put, lung function examination is an examination technique to know whether the respiratory function is normal by detecting the airflow speed and airflow produced by the respiratory tract when people breathe with special medical equipment.
A: Lung function tests are mainly used for the following purposes:
(1) Early detection of lung and respiratory diseases.
(2) Make clear the cause of dyspnea and determine the position of airway obstruction.
(3) Assess the severity of lung diseases.
(4) Evaluate the tolerance of operation and the possibility of postoperative complications.
(5) Physical examination, labor intensity and endurance assessment; (6) Monitoring of critically ill patients, etc.
Answer: (1) Lung function examination is a physical examination method, which has no harm to the body, pain and discomfort.
(2) Restrictive lesion: It refers to the change of reduced lung ventilation caused by limited lung breathing movement, such as emphysema, pleurisy, hydropneumothorax, etc., all of which have reduced lung ventilation to varying degrees.
(3) Mixed lesions: refers to the coexistence of obstructive and restrictive lesions, such as chronic obstructive pulmonary disease and children's late asthma, pneumoconiosis and bronchopneumonia.
(2) Pulmonary function examination has the advantages of high sensitivity, convenient repeated detection and easy acceptance by patients.
(3) Compared with chest X-ray and CT, pulmonary function examination focuses more on understanding the changes of pulmonary function, and is an important examination method for respiratory diseases.
Answer: All diseases that may affect the pulmonary ventilation function should be examined for pulmonary function. It is more important for the diagnosis and differential diagnosis of asthma, chronic obstructive pulmonary disease (emphysema), airway foreign body inhalation, bronchitis, pneumonia, pleurisy and other common respiratory diseases.
A: There are mainly (1) obstructive lesions: it refers to the change of airflow obstruction caused by various factors, especially asthma.