Pulmonary function test is one of the necessary tests for respiratory diseases, which is important for early detection of lung and airway lesions, assessment of disease severity and prognosis, evaluation of the efficacy of drugs or other treatments, identification of the causes of dyspnea, diagnosis of lesion sites, assessment of lung function for tolerance of surgery or labor intensity, and monitoring of critically ill patients.
I. Purpose
Pulmonary function tests are mainly used for the following purposes.
1.Early detection of lung and respiratory tract pathology.
2.Identify the cause of dyspnea and determine the site of airway obstruction.
3.To assess the severity of lung diseases.
4.To assess the surgical tolerance and the possibility of postoperative complications.
5.Assessment of health examination, labor intensity and tolerance;
6.Guardianship of critically ill patients, etc.
II. Features
1, pulmonary function test is a physical examination method, no damage to the body, no pain and discomfort.
2, pulmonary function test has the advantages of high sensitivity, convenient repeat testing and easy acceptance by patients.
3, compared with X-ray chest X-ray, CT and other tests, pulmonary function test is more focused on understanding the functional changes of the lungs, an important means of examination for respiratory system diseases.
III. Importance
1.Diagnose the patient’s respiratory function status and confirm the nature and degree of lung function damage.
2.Pulmonary function tests are necessary to confirm the diagnosis of COPD.
3. Pulmonary function tests help clinicians to clarify the severity of COPD and to formulate corresponding treatment plans according to the severity of the disease.
IV. Subjects
1.People with repeated upper respiratory tract infections – observe whether there is damage to lung function
2.Smoking history and long-term cough – to see if the function of small airways is changed
3.Seasonal coughing and wheezing attacks – to see if they have asthma
4, chronic bronchitis regular review – to monitor the development of the disease process
5, abnormal chest X-ray – to determine the degree of lung function damage
6.Anesthesia, risk assessment of surgical procedures, and prediction of postoperative recovery