title: Electrocardiographic changes in obstructive sleep apnea syndrome.
abstract: The acute electrocardiographic changes during apneic episodes in patients with sleep apnea are well known. Long-term electro-cardiographic changes in these patients are not well studied. We conducted a retrospective case-control study to assess the electrocardiographic changes in African-American patients with established obstructive sleep apnea syndrome (OSA). A significant percentage of patients with OSA had abnormal EKGs as compared to the control group. The effect of sleep apnea on the cardiovascular system is more complex in African-Americans due to higher prevalence of co-morbid conditions. Seventy-three percent of our patients with OSA had metabolic syndrome.
authors.affiliation: Department of Electrophysiology, Division of Cardiology, Johns Hopkins University, USA.
authors.forename: Kalpana
authors.initials: K
authors.lastname: Prakasa
authors.forename: Jehanara
authors.initials: J
authors.lastname: Ahmed
authors.forename: Syed
authors.initials: S
authors.lastname: Hasan
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Yousef
authors.forename: Sachin
authors.initials: S
authors.lastname: Shridharani
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000368:Aged; D016022:Case-Control Studies; D015897:Comorbidity; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis / Q000208:ethnology / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008923:Missouri / Q000453:epidemiology; D017286:Polysomnography; D015995:Prevalence; D012189:Retrospective Studies; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis / Q000208:ethnology / Q000503:physiopathology*