To Study the Prevalence of Obstructive Airway Disease in Patients of OSA Diagnosed by Polysomnography

Aim: To study the prevalence of obstructive airway disease in patient of OSA diagnosed by polysomnography. Method: This study is a descriptive cross-sectional and was carried out in patients admitted in the department of Respiratory Medicine who were diagnosed with OSA after polysomnography. Total 41 patients who were diagnosed as cases of obstructive sleep apnea were clinically evaluated and investigated by history taking and final diagnosis were made as either COPD, Asthma on basis of GOLD and GINA guidelines respectively. Results: Mean age of the study participants was 50.95 years. Prevalence of Asthma and COPD among cases with OSA was 58.5% and 14.6%.Mean AHI and ESS score was 42.45 and 16.80 respectively. The most common co-morbid condition was GERD (19.5%). Conclusion: Present study concluded that asthma is more prevalent than COPD in patients of obstructive sleep apnea. The main factors associated with Obstructive lung diseases and its pathogenesis is the obesity, hypertension, smoking habits, adenoids, tonsillitis, musculoskeletal changes, weakness and atrophy of muscles of upper respiratory tract.