https://stroke.ahajournals.org/content/early/2014/04/22/STROKEAHA.114.004712.abstract?sid=d0b12f5a-d0a9-48f9-9bf9-6014959fd049
The Reasons for Geographic and Racial Differences in Stroke Cohort
- Mary Cushman, MD, MSc,
- Suzanne E. Judd, PhD,
- Virginia J. Howard, PhD,
- Brett Kissela, MD, MS,
- Orlando M. Gutiérrez, MD, MMSc,
- Nancy S. Jenny, PhD,
- Ali Ahmed, MD, MPH,
- Evan L. Thacker, PhD and
- Neil A. Zakai, MD, MSc
+ Author Affiliations
- Correspondence to Mary Cushman, MD, MSc, Departments of Medicine and Pathology, University of Vermont, 208 S Park Dr, Colchester, VT 05446. E-mail mary.cushman@uvm.edu
Abstract
Background and Purpose—Improved
identification of those at risk of stroke might improve prevention. We
evaluated the association of the cardiac function
biomarker N-terminal pro–B-type natriuretic
peptide (NT-proBNP) with stroke risk in the 30 239 black and white
participants
of the Reasons for Geographic and Racial
Differences in Stroke (REGARDS) cohort.
Methods—During 5.4 years of follow-up after enrollment in 2003 to 2007, NT-proBNP was measured in baseline blood samples of 546 subjects
with incident ischemic stroke and 956 without stroke.
Results—NT-proBNP
was higher with older age and in those with heart disease, kidney
disease, atrial fibrillation, and lower low-density
lipoprotein-cholesterol. Adjusting for age,
race, sex, income, education, and traditional stroke risk factors, there
was an
increased risk of stroke across quartiles of
NT-proBNP; participants with NT-proBNP in the top versus the bottom
quartile
had a hazard ratio of 2.9 (95% confidence
interval, 1.9–4.5). There was no impact of added adjustment for kidney
function
and heart failure. Among pathogenetic stroke
subtypes, the association was largest for cardioembolic stroke, with a
hazard
ratio of 9.1 (95% confidence interval,
2.9–29.2). Associations did not differ by age, sex, or race, or after
excluding those
with baseline heart failure or atrial
fibrillation. Predicted stroke risk was more accurate in 27% of
participants if NT-proBNP
was considered after traditional stroke risk
factors (P<0.001).
Conclusions—NT-proBNP
was a major independent risk marker for stroke. Considering this and
other data for stroke, coronary disease, and
atrial fibrillation, the clinical use of
NT-proBNP measurement in primary prevention settings should be
considered.
But what type of stroke? Ischemic? hemorrhagic?
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