Sonja G Schütz1, Lynda D Lisabeth2, Chia-Wei Hsu3, Sehee Kim4, Ronald D Chervin5, Devin L Brown6. 1. Sleep Disorders Center, Department of Neurology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA. Electronic address: schuetzs@umich.edu. 2. Department of Epidemiology, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA. Electronic address: llisabet@umich.edu. 3. Department of Epidemiology, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA. Electronic address: chiaweih@umich.edu. 4. Department of Biostatistics, University of Michigan, 1415 Washington Heights, Ann Arbor, MI, USA. Electronic address: seheek@umich.edu. 5. Sleep Disorders Center, Department of Neurology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA. Electronic address: chervin@umich.edu. 6. Stroke Program - Cardiovascular Center, Department of Neurology, University of Michigan, 1500 E Medical Center Drive, Ann Arbor, MI 48109, USA. Electronic address: devinb@umich.edu.
Abstract
OBJECTIVE/ BACKGROUND: Stroke is often considered a risk factor for central sleep apnea (CSA). The goal of this study was to determine the prevalence and clinical correlates of CSA in patients with ischemic stroke. PATIENTS/ METHODS: In this analysis, 1346 participants in the Brain Attack Surveillance in Corpus Christi (BASIC) project underwent a home sleep apnea test shortly after ischemic stroke. Respiratory events during sleep were classified as central apneas, obstructive apneas, or hypopneas. Central apnea index (CAI) was defined as number of central apneas divided by recording time. CSA was defined as CAI ≥5/hour with at least 50% of all scored respiratory events classified as central apneas. Demographics and co-morbidities were ascertained from the medical record. RESULTS: Median CAI was 0/hour. Nineteen participants (1.4%) met criteria for CSA. Participants with CSA were more likely to be male, and had lower prevalence of obesity than participants without CSA. There was no association between CSA and other co-morbidities. CONCLUSIONS: CSA was uncommon in this large cohort of patients with recent ischemic stroke.
OBJECTIVE/ BACKGROUND: Stroke is often considered a risk factor for central sleep apnea (CSA). The goal of this study was to determine the prevalence and clinical correlates of CSA in patients with ischemic stroke. PATIENTS/ METHODS: In this analysis, 1346 participants in the Brain Attack Surveillance in Corpus Christi (BASIC) project underwent a home sleep apnea test shortly after ischemic stroke. Respiratory events during sleep were classified as central apneas, obstructive apneas, or hypopneas. Central apnea index (CAI) was defined as number of central apneas divided by recording time. CSA was defined as CAI ≥5/hour with at least 50% of all scored respiratory events classified as central apneas. Demographics and co-morbidities were ascertained from the medical record. RESULTS: Median CAI was 0/hour. Nineteen participants (1.4%) met criteria for CSA. Participants with CSA were more likely to be male, and had lower prevalence of obesity than participants without CSA. There was no association between CSA and other co-morbidities. CONCLUSIONS: CSA was uncommon in this large cohort of patients with recent ischemic stroke.
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