European Journal of Cardiovascular Medicine

Background: COPD is among the most common lung diseases, becoming a major health problem around the world. It is characterized by a persistent and commonly progressive airflow limitation consequent to an abnormal inflammatory response of the airway and lung tissue a persistent and commonly progressive airflow limitation consequent to an abnormal inflammatory response of the airway and lung tissue. Sleep disorders are frequently present in COPD patients, particularly obstructive sleep apnoea syndrome (OSAS) and the coexistence of this two is termed as overlap syndrome. Methodology-          The study was conducted in the Department of respiratory Medicine of a tertiary health care teaching hospital. The duration of the study was from December 2017 to November 2019. 105 cases of chronic obstructive pulmonary disease visiting outpatient / Inpatient section of Pulmonary Medicine department for diagnosis and fulfilling the inclusion and exclusion criteria were included. All the patients were evaluated with spirometry and polysomnography for detection of obstructive sleep apnea. Data was collected using predesigned, pre-tested, semi-structured questionnaire. Results- The prevalence of OSA in COPD (i.e. overlap syndrome) amongst study group was 27.62%. Sleep related symptoms were more prevalent in overlap group of patients as compared to patients without overlap and the difference is statistically significant between two groups for every symptom. Conclusion- Polysomnography in COPD patients is useful for early detection of OSA and to prevent them from further complications of OSA.