PMID: 22338575Feb 18, 2012Paper

Platelet hyperreactivity and stent thrombosis in patients undergoing coronary stenting

Current Vascular Pharmacology
Katharina Mayer, Dirk Sibbing

Abstract

Stent thrombosis (ST) is a rare but very serious event complicating percutaneous coronary intervention (PCI) procedures. Both procedure- and patient-related factors, including inadequate platelet inhibition are well known predictors of ST. According to the present guidelines, a dual antiplatelet treatment regimen consisting of aspirin and a P2Y12 receptor inhibitor such as clopidogrel, prasugrel or ticagrelor is routinely administered to ACS patients and to patients undergoing PCI in order to prevent thrombotic vessel occlusions. In recent years, evidence has grown that patients showing high on-treatment platelet reactivity (HPR) under clopidogrel intake exhibit a higher risk for the occurrence of ischemic events including ST. For assessing HPR, different platelet function assays are currently available and have already found their way into routine clinical practice in several centers. Along with this development, more potent P2Y12 receptor inhibitors like prasugrel and ticagrelor are substitutes for clopidogrel in specific circumstances such as in ACS patients or in patients who do not adequately respond to standard clopidogrel treatment. Utilizing platelet function monitoring, patients showing HPR can be identified and an opt...Continue Reading

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