Abstract 27: Sleep Apnea and Ischemic Stroke Subtype: The BASIC Sleep Project

Background: Little is known about the prevalence of sleep apnea (SA) across ischemic stroke subtypes. Given the important implications for SA screening, we tested the association between SA and ischemic stroke subtype in a population-based study. Methods: Within the Brain Attack Surveillance in Corpus Christi Project, ischemic stroke patients were offered SA screening with the ApneaLink PlusTM device (n=355). A board-certified neurologist assigned TOAST subtype (with an additional category for nonlacunar infarctions of unknown etiology) using hospital records (diagnostic tests, imaging reports, discharge summaries). Unadjusted and adjusted (demographics, BMI, NIHSS, diabetes, history of stroke/TIA) logistic and linear regression models were used to test the association between subtype and SA or apnea-hypopnea index (AHI). Results: Median age was 65 and 55% were male; 59% were Mexican American. Median time from stroke onset to SA screen was 13 days (IQR: 6, 21). Overall, 215 (61%) had SA (AHI ≥10). Median ...