Clinical Research Directory

Inclusion Criteria: * Age ≥18 years (adults). * Confirmed stable non-CF bronchiectasis on high-resolution CT (HRCT) by a chest radiologist, with standard features (e.g., broncho-arterial ratio \>1, lack of tapering, airways visible within 1 cm of pleura), documented in the medical record. * Non-cystic fibrosis etiology: no clinical diagnosis of cystic fibrosis; if prior doubt, a negative/normal sweat chloride or genetic report is required. * Ability and willingness to participate in scheduled follow-up assessments at 3, 6, 9, and 12 months. Exclusion Criteria: * Acute bronchiectasis exacerbation at screening or within the preceding 4 weeks, including treatment with systemic antibiotics and/or systemic corticosteroids for respiratory deterioration during that period. * Severe hemoptysis, unstable respiratory status, or any medical condition making completion of study questionnaires or scheduled assessments unsafe or unreliable in the investigator's judgment. * Primary sleep disorders likely to substantially confound interpretation of sleep-quality measures, including newly diagnosed moderate-to-severe obstructive sleep apnea initiating positive airway pressure therapy, narcolepsy, or untreated restless legs syndrome; patients with previously diagnosed sleep disorders on stable treatment for ≥3 months may be included. * Active pulmonary tuberculosis, interstitial lung disease, lung malignancy, pregnancy, or severe neurological or cognitive impairment that would prevent reliable completion of study assessments.