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  • Platelet function tests and resistance to antiplatelet therapy
    Stegnar, Mojca
    The clinical efficacy of antiplatelet therapy (aspirin, P2Y12 and glycoproteinIIb/IIIa receptor antagonists) to prevent occlusive arterial events in patients with atherothrombotic disease is well ... established. Despite the proven benefits of antiplatelet therapy, many patients continue to experience arterial events. Many factors may influence the response of platelets to antiplatelet therapy and some patients with adequate compliance to the treatment may exhibit failure of platelet inhibition as determined by ex vivo laboratory tests, a phenomenon termed "resistance" to antiplatelet therapy. Platelet function can be measured by numerous platelet function tests, with which various parameters of platelet activation, secretion, adhesion and aggregation can be determined. These tests include light transmission (optical) and whole blood aggregometry, point-of-care devices, such as platelet function analyzers PFA-100, and VerifyNow, flow cytometry, serum thromboxane B2 and urinary levels of the thromboxane B2 metabolite 11-dehyro-thromboxane B2. Other tests, such as whole blood platelet aggregation measured by platelet counting, thrombelastography and devices suchas the cone and plate(let) analyzer, Plateletworks and thrombotic status analyzer have also been used to determine platelet inhibition by antiplatelet drugs, but their use is not widespread and therefore experience is limited. Further studies need to be carried out to answer basic questions on the clinical utility and cost-effectiveness of laboratory monitoring of antiplatelet therapy before it can be recommended in clinical practice.
    Type of material - article, component part
    Publish date - 2010
    Language - english
    COBISS.SI-ID - 26908121