Stroke is the leading cause of adult disability in the US and a leading cause of death. Mexican Americans (MA), the largest subgroup of Hispanic Americans, have a substantially higher stroke risk than European Americans, especially at younger ages where the risk is more than double. Given the greater risk and earlier onset, the impact of stroke is disproportionately experienced by MAs. Reasons for increased stroke risk in MAs are poorly understood. More than half of ischemic stroke patients have sleep apnea, a very common and important risk factor for stroke and potentially a risk factor for poor stroke outcome. No published studies have established the prevalence of sleep apnea in MAs to discern sleep apnea's contribution to excess stroke burden in this population. Small studies conducted in academic medical centers have suggested that stroke patients with sleep apnea have particularly poor stroke outcomes, but population-based studies in diverse populations are lacking. The current application seeks to investigate health disparities related to sleep apnea in stroke patients in order to understand the marked ethnic differences in stroke. This research will inform the development of interventions to prevent or treat sleep apnea in MAs, which will reduce the ethnic stroke disparity. The parent study for this project, the Brain Attack Surveillance in Corpus Christi (BASIC) project, is an ongoing population-based stroke surveillance study that identifies stroke cases in Nueces County, Texas. This study has made many important discoveries about stroke in Hispanics. BASIC will continue to identify all strokes in Nueces County until mid year 3 of the current application and will provide detailed 90-day stroke outcome data until mid year 2. The current application will extend BASIC data collection through year 5 month 3 and will add: (1) sleep apnea screening in the acute stroke period that differentiates obstructive from central events, (2) sleep apnea screening for intracerebral hemorrhage cases, (3) access to care measures for sleep apnea, and (4) genetic admixture analysis to investigate how genetics may relate to ethnic disparities in sleep apnea. The application seeks, in a cost-containing fashion, to understand and remedy the influence of a very frequent risk factor, sleep apnea, on a common, devastating disease, stroke, in the largest and fastest growing US minority population.

Public Health Relevance

Sleep apnea is an important predictor of stroke and appears to be a predictor of poor outcomes after stroke. Using the preexisting infrastructure of the BASIC project, the current application will provide an assessment of health disparities related to sleep apnea in stroke patients. It will also allow for the rigorous study of ethnic comparisons of sleep apnea after stroke in European Americans and Hispanics, the largest minority in the United States.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Project (R01)
Project #
5R01NS070941-05
Application #
8836598
Study Section
Cardiovascular and Sleep Epidemiology Study Section (CASE)
Program Officer
Waddy, Salina P
Project Start
2011-05-01
Project End
2017-04-30
Budget Start
2015-05-01
Budget End
2017-04-30
Support Year
5
Fiscal Year
2015
Total Cost
Indirect Cost
Name
University of Michigan Ann Arbor
Department
Neurology
Type
Schools of Medicine
DUNS #
073133571
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109
Lisabeth, Lynda D; Scheer, Richard V; Li, Chengwei et al. (2018) Intracerebral hemorrhage and sleep-disordered breathing. Sleep Med 46:114-116
McDermott, Mollie; Brown, Devin L; Li, Chengwei et al. (2018) Sex differences in sleep-disordered breathing after stroke: results from the BASIC project. Sleep Med 43:54-59
Lisabeth, Lynda D; Baek, Jonggyu; Morgenstern, Lewis B et al. (2018) Prognosis of Midlife Stroke. J Stroke Cerebrovasc Dis 27:1153-1159
Brown, Devin L; Jiang, Xiaqing; Li, Chengwei et al. (2018) Sleep apnea screening is uncommon after stroke. Sleep Med :
Li, Chengwei; Baek, Jonggyu; Sanchez, Brisa N et al. (2018) Temporal trends in age at ischemic stroke onset by ethnicity. Ann Epidemiol 28:686-690.e2
Dong, Liming; Sánchez, Brisa N; Skolarus, Lesli E et al. (2018) Ethnic Differences in Prevalence of Post-stroke Depression. Circ Cardiovasc Qual Outcomes 11:e004222
Lisabeth, Lynda D; Sánchez, Brisa N; Chervin, Ronald D et al. (2017) High prevalence of poststroke sleep-disordered breathing in Mexican Americans. Sleep Med 33:97-102
Wing, Jeffrey J; Adar, Sara D; Sánchez, Brisa N et al. (2017) Short-term exposures to ambient air pollution and risk of recurrent ischemic stroke. Environ Res 152:304-307
Lisabeth, Lynda D; Baek, Jonggyu; Morgenstern, Lewis B et al. (2017) Sex differences in the impact of acute stroke treatment in a population-based study: a sex-specific propensity score approach. Ann Epidemiol 27:493-498.e2
Patel, Rajiv C; Sánchez, Brisa N; Morgenstern, Lewis B et al. (2017) Impact of Stroke Risk Factors on Ethnic Stroke Disparities Among Midlife Mexican Americans and Non-Hispanic Whites. Stroke 48:2872-2874

Showing the most recent 10 out of 35 publications