Aspirin response and failure in cerebral infarction

240Citations
Citations of this article
20Readers
Mendeley users who have this article in their library.

Abstract

Background and Purpose: The purpose of this study was to assess the biological effect of aspirin as measured by the inhibition of platelet aggregation in patients taking aspirin for stroke prevention and in patients with acute stroke. Methods: We administered increasing doses of aspirin (325, 650, 975, and 1,300 mg daily) to 113 patients for stroke prevention and measured the inhibition of platelet aggregation in these patients and in 33 patients with acute stroke taking aspirin before stroke onset. Results: Eighty-five patients on ≤325 and six on ≥650 mg aspirin daily had complete inhibition of platelet aggregation. Increase of the dose by 325 mg in nine of the 22 patients with partial inhibition of platelet aggregation produced complete inhibition in five patients at 650 mg and in one at 975 mg. At 1,300 mg, three patients still had only partial inhibition of platelet aggregation (aspirin resistance). Of the 33 inpatients with acute stroke, 24 had platelet aggregation studies done before further administration of aspirin. Of these, 19 had complete inhibition of platelet aggregation and three had partial inhibition, with production of complete inhibition of platelet aggregation at dose escalation; one patient was aspirin-resistant and the other noncompliant. Conclusions: How the inhibition of platelet aggregation relates to stroke prevention remains unclear. The ability of aspirin and the dose required to inhibit platelet aggregation may depend upon the individual.

Cite

CITATION STYLE

APA

Helgason, C. M., Tortorice, K. L., Winkler, S. R., Penney, D. W., Schuler, J. J., McClelland, T. J., & Brace, L. D. (1993). Aspirin response and failure in cerebral infarction. Stroke, 24(3), 345–350. https://doi.org/10.1161/01.STR.24.3.345

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free