Mexican Americans with atrial fibrillation have more recurrent strokes than do non-hispanic whites

Jennifer R. Simpson, Darin B. Zahuranec, Lynda D. Lisabeth, Brisa N. Sánchez, Lesli E. Skolarus, Jorge E. Mendizabal, Melinda A. Smith, Nelda M. Garcia, Lewis B. Morgenstern

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Background And Purpose-: Atrial fibrillation is a common cause of stroke with a known preventive treatment. We compared poststroke recurrence and survival in Mexican Americans (MAs) and non-Hispanic whites (NHWs) with atrial fibrillation in a population-based study. Methods-: Using surveillance Methods from the Brain Attack Surveillance in Corpus Christi Project, cases of ischemic stroke/transient ischemic attack with atrial fibrillation were prospectively identified from January 2000 to June 2008. Recurrent stroke and all-cause mortality were compared by ethnicity with survival analysis Methods. Results-: A total of 236 patients were available (88 MAs, 148 NHWs). MAs were younger than NHWs, with no ethnic differences in severity of the first stroke or proportion discharged on warfarin. MAs had a higher risk of stroke recurrence than did NHWs (Kaplan-Meier estimates of survival free of stroke recurrence risk at 28 days and 1 year were 0.99 and 0.85 in MAs and 0.98 and 0.96 in NHWs, respectively; P=0.01, log-rank test), which persisted despite adjustment for age and sex (hazard ratio=2.46; 95% CI, 1.19-5.11). Severity of the recurrent stroke was higher in MAs than in NHWs (P=0.02). There was no ethnic difference in survival after stroke in unadjusted analysis or after adjusting for demographic and clinical factors (hazard ratio=1.03; 95% CI, 0.63-1.67). Conclusions-: MAs with atrial fibrillation have a higher stroke recurrence risk and more severe recurrences than do NHWs but no difference in all-cause mortality. Aggressive stroke prevention measures focused on MAs are warranted.

Original languageEnglish (US)
Pages (from-to)2132-2136
Number of pages5
JournalStroke
Volume41
Issue number10
DOIs
StatePublished - Oct 2010

Keywords

  • prevention
  • stroke care

ASJC Scopus subject areas

  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine
  • Advanced and Specialized Nursing

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