Clinical Research Directory

Inclusion Criteria: * Age ≥18 years * Participants' pulmonary imaging findings and clinical presentation met the diagnostic criteria for bronchiectasis * Clinically stable (no antibiotics or oral corticosteroids within 4 weeks prior to enrolment); * Patients who are willing to sign the consent form and participate in the study. Exclusion Criteria: * Age \<18 years * Does not meet the diagnostic criteria for bronchiectasis * Participants with cystic fibrosis or previous lung transplantation * Participants who are unable to cooperate with the study due to dysfunction of vital systems such as heart, brain, liver, and kidneys, or who are unable to participate in the study due to comorbid serious diseases * Participants with active disorders, including active tuberculosis, active allergic bronchopulmonary aspergillosis, active nontuberculous mycobacterial infection and malignancy or secondary traction bronchiectasis associated with pulmonary fibrosis * Pregnant or lactating females * Who are not able to provide informed consent or who refuse to participate in the clinical study