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Clinical and biochemical aspirin resistance in patients with recurrent cerebral ischemia.
MedLine Citation:
PMID:  23069275     Owner:  NLM     Status:  Publisher    
BACKGROUND AND AIM: Stroke recurrence is an important public health concern. One half of survivors remain disabled, and one seventh requires institutional care. Aspirin remains the cornerstone of primary and secondary stroke prevention; meanwhile, aspirin resistance is one of the possible causes of stroke recurrence. We aimed to evaluate the clinical and biochemical aspirin resistance in patients with recurrent ischemic stroke. PATIENTS AND METHODS: We studied demographic characteristics, vascular risk factors, stroke subtypes, radiologic findings and biochemical aspirin resistance tests using both arachidonic acid (AA) and adenosine diphosphate (ADP)-induced light transmittance aggregometry (LTA) on admission and 24h after observed aspirin ingestion. RESULTS: Of the 82 patients with recurrent cerebral ischemia included in this study, 37 (45%) patients were poor compliant with aspirin. There were no statistically significant differences between the two groups regarding the demographic characteristics, stroke severity, laboratory tests, radiological findings or vascular risk factors. On admission, 19.6% and 4.8% of patients showed aspirin resistance, while 24h after supervised 300mg single aspirin dose ingestion, it was 9.8% and 2.4% using ADP and AA-induced LTA respectively. Of the eight aspirin resistant patients, two only showed resistance using both AA and ADP. Aspirin resistance was statistically significantly higher in the male gender, older age, hyperlipidemia, smokers and in all lacunar strokes using AA. CONCLUSION: Biochemical aspirin resistance in one's series was rather rare (2.4%) and was more prevalent in patients with lacunar strokes. Clinical aspirin failure may often be contributed to poor compliance with aspirin intake.
Ashraf El-Mitwalli; Hanan Azzam; Mohammad Abu-Hegazy; Mohamed Gomaa; Yasser Wasel
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-12
Journal Detail:
Title:  Clinical neurology and neurosurgery     Volume:  -     ISSN:  1872-6968     ISO Abbreviation:  Clin Neurol Neurosurg     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502039     Medline TA:  Clin Neurol Neurosurg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Department of Neurology, University of Mansoura, Egypt. Electronic address:
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