Assessment of airflow limitation in patients with obstructive sleep apnea

Abstract Background Obstructive sleep apnea (OSA) is a prevalent sleep breathing disorder affecting 9–25% of the general adult population. Aim To assess airflow limitation by spirometric indices in patients with obstructive sleep apnea. Patients and methods This observational case–control study was conducted on 60 subjects who were divided into four groups: Group I (control group), included 20 subjects chosen from other departments, who had no respiratory complaints with apnea–hypopnea index (AHI