A Prospective, Observational, Comparative Study on the Relationship Between Sleep Disordered Breathing and Cardiac Disorders

Sleep-disordered breathing (SDB) was first described in the medical literature in 1936.Obstructive sleep apnoea/hypopnoea syndrome (OSAHS) is the most common type of SDB, affecting 4% of men and 2% of women aged 30–65 years with a total population prevalence of 1–2%.There are many associations between cardiovascular diseases and sleep disordered breathing (SDB).The objective of the study is to determine the prevalence, risk factors, and severity for sleep disordered breathing in patients with cardiac disorders. A Prospective, Observational, Comparative Study on the Relationship between Sleep Disordered Breathing [SDB] and Cardiac Disorders was conducted in the Cardiology Department of a hospital in Coimbatore. The data was collected during ward rounds and severity of SDB measured with the help of two questionnaires: Epworth Sleepiness Scale and Stop-Bang questionnaire. A total of 93 cases with various cardiac disorders were analyzed. The results indicated that males (69.8%) were predominantly more than females (30.1%) in the study. The study shows that (31.1%) patients were observed with Ischemic Heart Disease condition, (31.1%) patients with Ischemic Heart Disease/Systemic Hypertension, (10.7%) patients had Systemic Hypertension as major diagnosis. Assessment using Epworth scale shows that (30.1%) patients had moderate risk, (27.9%) patients with severe risk and (24.7%) were having mild risk. Assessment using Stop- Bang shows that (49.4%) had intermediate risk, followed by (32.2%) patients with high risk and (18.2%) with low risk. The results demonstrated an increased risk for sleep disordered breathing in cardiac disorders.