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. 2014 Aug;15(8):887-91.
doi: 10.1016/j.sleep.2014.04.003. Epub 2014 May 2.

Brainstem infarction and sleep-disordered breathing in the BASIC sleep apnea study

Devin L Brown  1 , Mollie McDermott  2 , Ashkan Mowla  3 , Lindsey De Lott  2 , Lewis B Morgenstern  4 , Kevin A Kerber  2 , Garnett Hegeman 3rd  5 , Melinda A Smith  2 , Nelda M Garcia  2 , Ronald D Chervin  5 , Lynda D Lisabeth  4
Affiliations

Brainstem infarction and sleep-disordered breathing in the BASIC sleep apnea study

Devin L Brown et al. Sleep Med. 2014 Aug.

Abstract

Background: Association between cerebral infarction site and poststroke sleep-disordered breathing (SDB) has important implications for SDB screening and the pathophysiology of poststroke SDB. Within a large, population-based study, we assessed whether brainstem infarction location is associated with SDB presence and severity.

Methods: Cross-sectional study was conducted on ischemic stroke patients in the Brain Attack Surveillance in Corpus Christi (BASIC) project. Subjects underwent SDB screening (median 13days after stroke) with a well-validated cardiopulmonary sleep apnea-testing device (n=355). Acute infarction location was determined based on review of radiology reports and dichotomized into brainstem involvement or none. Logistic and linear regression models were used to test the associations between brainstem involvement and SDB or apnea/hypopnea index (AHI) in unadjusted and adjusted models.

Results: A total of 38 participants (11%) had acute infarction involving the brainstem. Of those without brainstem infarction, 59% had significant SDB (AHI⩾10); the median AHI was 13 (interquartile range (IQR) 6, 26). Of those with brainstem infarction, 84% had SDB; median AHI was 20 (IQR 11, 38). In unadjusted analysis, brainstem involvement was associated with over three times the odds of SDB (odds ratio (OR) 3.71 (95% confidence interval (CI): 1.52, 9.13)). In a multivariable model, adjusted for demographics, body mass index (BMI), hypertension, diabetes, coronary artery disease, atrial fibrillation, prior stroke/transient ischemic attack (TIA), and stroke severity, results were similar (OR 3.76 (95% CI: 1.44, 9.81)). Brainstem infarction was also associated with AHI (continuous) in unadjusted (p=0.004) and adjusted models (p=0.004).

Conclusions: Data from this population-based stroke study show that acute infarction involving the brainstem is associated with both presence and severity of SDB.

Keywords: Brainstem; Infarction; Portable monitor; Risk factor; Sleep-disordered breathing; Stroke.

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