Overestimation of Platelet Aspirin Resistance Detection by Thrombelastograph Platelet Mapping and Validation by Conventional Aggregometry Using Arachidonic Acid Stimulation
Udaya S. Tantry, PhD,
Kevin P. Bliden, BS and
Paul A. Gurbel, MD, FACC*
Sinai Center for Thrombosis Research, Baltimore, Maryland

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Figure 1 Scatter plot showing 1 mmol/l arachidonic acid-induced platelet aggregation by light-transmittance aggregometry in individual healthy subjects (n = 6) (before and after aspirin therapy), compliant (n = 196) and non-compliant patients (n = 7) undergoing percutaneous interventions (PCIs) (before and after PCI), and patients with a history of stent thrombosis (SAT).
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Figure 2 Scatter plot showing 1 mmol/l arachidonic acid-induced platelet aggregation by thrombelastography in individual healthy subjects (n = 6) (before and after aspirin therapy), compliant (n = 196) and non-compliant patients (n = 7) undergoing percutaneous interventions (PCIs) (before and after PCI), and patients with a history of stent thrombosis (SAT).
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