Glycoprotein IIb/IIIa inhibitors improve outcome after coronary stenting in clopidogrel nonresponders: a prospective, randomized study
JACC: Cardiovascular Interventions, 2008•jacc.org
Objectives: The aim of this study was to assess, in clopidogrel nonresponders undergoing
elective percutaneous coronary intervention (PCI), the benefit of adjusted antiplatelet
therapy with glycoprotein (GP) IIb/IIIa antagonist administration during PCI for 1-month
clinical outcome. Background: Numerous biological studies have reported interindividual
variability in platelet response to clopidogrel with clinical relevance, and high post-treatment
platelet reactivity (adenosine diphosphate-induced aggregation> 70%) has been proposed …
elective percutaneous coronary intervention (PCI), the benefit of adjusted antiplatelet
therapy with glycoprotein (GP) IIb/IIIa antagonist administration during PCI for 1-month
clinical outcome. Background: Numerous biological studies have reported interindividual
variability in platelet response to clopidogrel with clinical relevance, and high post-treatment
platelet reactivity (adenosine diphosphate-induced aggregation> 70%) has been proposed …
Objectives
The aim of this study was to assess, in clopidogrel nonresponders undergoing elective percutaneous coronary intervention (PCI), the benefit of adjusted antiplatelet therapy with glycoprotein (GP) IIb/IIIa antagonist administration during PCI for 1-month clinical outcome.
Background
Numerous biological studies have reported interindividual variability in platelet response to clopidogrel with clinical relevance, and high post-treatment platelet reactivity (adenosine diphosphate-induced aggregation >70%) has been proposed to define nonresponse to clopidogrel. These nonresponders might benefit from tailored antiplatelet therapy.
Methods
One hundred forty-nine clopidogrel nonresponders referred for elective PCI were prospectively included and randomized to “conventional group” (n = 75) or “active group” with GP IIb/IIIa antagonist (n = 74). All patients received 250-mg aspirin and 600-mg clopidogrel before PCI and platelet testing.
Results
The rate of cardiovascular events at 1 month was significantly lower in the “active group” than in the “conventional group”: 19% (n = 14) versus 40% (n = 30), p = 0.006, odds ratio: 2.8; 95% confidence interval: 1.4 to 6.0. No patient in either group had post-procedural Thrombolysis In Myocardial Infarction major bleeding or required transfusions.
Conclusions
The present study suggested benefit of tailored antiplatelet therapy during elective PCI with GP IIb/IIIa antagonist for clopidogrel nonresponders without increased bleeding risk.
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