Document Detail


Predictors of stroke in high-risk patients after acute myocardial infarction: insights from the VALIANT Trial.
MedLine Citation:
PMID:  16984929     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: We sought to determine risk models for predicting early and late stroke in a large cohort of high-risk post-myocardial infarction (MI) patients. METHODS AND RESULTS: We prospectively analysed data from 14 703 patients in the VALIANT trial with acute MI complicated by heart failure, left ventricular (LV) systolic dysfunction, or both. Patients were randomized 0.5-10 days after acute MI to valsartan, captopril, or their combination. We evaluated risk factors for early (<45 days) and late (>45 days) stroke by using multivariable Cox proportional hazards regression analyses with stepwise variable selection techniques applied to 92 pre-specified potential predictor variables. After randomization, 463 (3.2%) patients had fatal (n = 124) or non-fatal (n = 339) strokes, with 134 strokes occurring in the first 45 days. The strokes were classified as ischaemic (348), haemorrhagic (40), or of indeterminate cause (75). Estimated glomerular filtration rate and heart rate when in sinus rhythm were the most powerful predictors of early stroke (<45 days after MI), whereas diastolic blood pressure (DBP) >90 mmHg, prior stroke, and atrial fibrillation (AF) were the most powerful predictors of stroke overall. Ejection fraction and sex were not predictive of stroke in this cohort. CONCLUSION: Among high-risk patients presenting with MI but without initial neurological symptoms, the risk of stroke 6 weeks thereafter is 0.94% (95% CI 0.78-1.09). Of the most powerful baseline predictors of stroke, DBP and AF are amenable to therapeutic interventions and thus merit special attention in these patients.
Authors:
Uchechukwu K Sampson; Marc A Pfeffer; John J V McMurray; Yuliya Lokhnygina; Harvey D White; Scott D Solomon;
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2006-09-19
Journal Detail:
Title:  European heart journal     Volume:  28     ISSN:  0195-668X     ISO Abbreviation:  Eur. Heart J.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-16     Completed Date:  2008-02-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  England    
Other Details:
Languages:  eng     Pagination:  685-91     Citation Subset:  IM    
Affiliation:
Division of Cardiovascular Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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MeSH Terms
Descriptor/Qualifier:
Aged
Brain Infarction / etiology
Cerebral Hemorrhage / etiology
Cohort Studies
Double-Blind Method
Female
Humans
Male
Myocardial Infarction / complications*
Prospective Studies
Registries
Risk Factors
Stroke / etiology*

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