Premorbid antiplatelet use and ischemic stroke outcomes
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Abstract
Objective: To evaluate the independent effect of premorbid antiplatelet use on incident ischemic stroke severity and outcome at discharge.
Methods: The authors studied consecutive patients presenting within 24 hours of ischemic stroke over a 1-year period. National Institutes of Health Stroke Scale (NIHSS) score at presentation was used as index of stroke severity and a modified Rankin scale of 0 to1 at discharge as index of good functional outcome. Patients were categorized according to their premorbid antiplatelet use as antiplatelet-inclusive (AI) and no antiplatelet (NA). Demographic data, risk factors, pertinent laboratory tests, other medications, and stroke mechanisms were controlled for across the two groups using multivariate logistic regression.
Results: A total of 260 individuals met study criteria: 92 patients were on antiplatelet agents prior to admission, 168 were on no antiplatelets. Pretreatment with antiplatelet was associated with lower presenting median NIHSS (4.5 vs 7, p = 0.005). Antiplatelet use was associated with less severe stroke at presentation in those having no history of stroke or TIA (4.8 vs 8.0, p = 0.03) but not in those with a prior history of stroke or TIA (4.9 vs 4.9, p = 0.987). The likelihood of a good outcome was increased in those on antiplatelets after adjusting for other variables (OR 2.105, p = 0.0073).
Conclusions: Prestroke use of antiplatelet may be associated with reduced severity of incident ischemic strokes in those with no prior history of stroke or TIA, and with an increased likelihood of a good discharge outcome regardless of prior cerebrovascular event history.
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Disputes & Debates: Rapid online correspondence
- Premorbid antiplatelet use and ischemic stroke outcomes
- Hai-feng Li, Department of Neurology, Affiliated Hospital of Medical College, Qingdao University
- Xu-dong Pan
Published May 09, 2006 - Reply from the authors
- Nerses Sanossian, UCLA Stroke Center
- Bruce Ovbiagele
Published May 09, 2006
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