Small airway dysfunction
Conditions
Interventions
Observation group:None
Sponsors
Tongde Hospital of Zhejiang Province
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: From January 2024 to November 2025, 150 individuals were included, consisting of COPD patients and asthma patients in the respiratory outpatient and inpatient departments, as well as people with no respiratory symptoms, normal signs, and normal lung function. Case collection inclusion criteria: 1.Patients with chronic obstructive pulmonary disease (COPD) meet the diagnostic criteria for COPD as outlined in the 2025 Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines. 2.Patients with asthma meet the diagnostic criteria for asthma as defined by the 2025 Global Initiative for Asthma (GINA) guidelines. 3.Population with no respiratory symptoms, signs, and normal lung function; 4.Availability of comprehensive general information, having completed assessments including Impulse Oscillometry, Pulmonary Function Testing, and Fractional Exhaled Nitric Oxide measurement.
Exclusion criteria
Exclusion criteria: 1.Exclusion of patients with chronic respiratory conditions (e.g., pneumonia, tuberculosis, interstitial lung disease, lung cancer) that may influence lung function outcomes. 2.Exclusion of patients with severe cardiocerebrovascular diseases or malignancies. 3.Exclusion for history of thoracic deformity, significant chest trauma, or chest surgery. 4.Pregnant or lactating women.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| IOS indicators; | — |
Countries
China
Contacts
Public ContactLiping Wang
Tongde Hospital of Zhejiang Province
Outcome results
None listed