Role of Anemia as a Modifier in Cystic and Non-Cystic Fibrosis Patients with Bronchiectasis Concomitant Obstructive Sleep Apnea

(1) Background: Anemia and obstructive sleep apnea (OSA) are prevalent comorbidities in bronchiectasis and may share overlapping pathophysiological mechanisms. However, their combined impact on clinical outcomes in bronchiectasis remains underexplored. We aimed to investigate the associations between anemia, OSA, and clinical characteristics in patients with bronchiectasis, including cystic fibrosis (CF) and non-CF subtypes. (2) Methods: 70 adults with bronchiectasis (35 CF-related, 35 non-CF) underwent polysomnography. Anemia was defined using standard hemoglobin