Obstructive sleep apnea in stroke survivors can increase the risk of death, according to preliminary research finding.
Until this analysis of the Brain Attack Surveillance in Corpus Christi, there was no prospective data on the relationship between sleep apnea and recurrent stroke or death from large, population-based or ethnically diverse populations.
The project enrolled 842 people (median age 65, 47 percent female, 58 percent Mexican American, 34 percent non-Hispanic white) who had an ischemic stroke caused by decreased blood supply between 2010-2015.
During follow-up (median time to event 584 days) scientists found:
- 10.7 percent experienced another stroke and 14.8 percent died.
- Each additional pause in breathing per hour was associated with a 9 percent increase in recurrent stroke or death.
- After adjusting for known risk factors, Mexican-American ethnicity was associated with a 1.7-fold increased risk of recurrent stroke or death.