Respiratory Disease
Conditions
Interventions
Pre-COPD group :NA
Early stage COPD group :NA
Sponsors
Tianjin Chest Hospital
Eligibility
Sex/Gender
All
Age
35 Years to 75 Years
Inclusion criteria
Inclusion criteria: 1. Age: 35-75 years old. 2. Gender: male or female. 3. Lung function after inhalation of bronchodilators is consistent with: FEV1/FVC =80%. 4. The patient is willing and able to complete the entire trial process and sign the informed consent form and other relevant documents.
Exclusion criteria
Exclusion criteria: 1. Have diseases that may cause abnormal lung function in the opinion of the clinician, such as lung cancer, bronchiectasis, interstitial lung disease, history of previous chest surgery, etc. 2. Body mass index (BMI) > 35 kg/m^2. 3. Suffering from mental illness or cognitive dysfunction. 4. Pregnant or lactating women. 5. Participating in other interventional clinical studies. 6. Have had a heart attack (angina, myocardial infarction, malignant arrhythmia, etc.) in the past 3 months. 7. Hospitalization for heart disease within the past 1 month. 8. Being treated with anti-tuberculosis drugs or active tuberculosis. 9. Newly identified and treated malignancies. 10. Patients with pulmonary function that other investigators believe are not suitable for undergoing pulmonary function. 11. Inability to provide written informed consent.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| PRMEmphV(cc); | — |
Secondary
| Measure | Time frame |
|---|---|
| PRMfSADV (cc);Vessel Area(mm2);Total Surface LAA(mm2)); | — |
Countries
China
Contacts
Public ContactLi Yi
Tianjin Chest Hospital
Outcome results
None listed