CC BY-NC-ND 4.0 · Journal of Cardiac Critical Care TSS
DOI: 10.1055/s-0041-1724225
Original Article

Use of Thromboelastography Platelet Mapping for Assessment of Individual Platelet Response Secondary to Oral Antiplatelet Therapy after Percutaneous Coronary Intervention: An Attempt to Start Personalized Antiplatelet Therapy in India

1   Department of Transfusion Medicine, The Mission Hospital, Durgapur, West Bengal, India
2   Department of Transfusion Medicine, Tata Medical Center, Newtown, Rajarhat, Kolkata, West Bengal, India
Dibyendu De
3   Department of Clinical Hematology, The Mission Hospital, Durgapur, West Bengal, India
Nadeem Afroz Muslim
4   Department of Cardiology, The Mission Hospital, Durgapur, West Bengal, India
› Author Affiliations
Funding We did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors for this study.


High on-treatment platelet reactivity (HPR) with P2Y12 receptor antagonists in patients treated with dual antiplatelet therapy (DAPT) is strongly associated with adverse ischemic events after percutaneous coronary intervention (PCI). This prospective study was conducted to assess individual platelet response and HPR to antiplatelet medications in post-PCI cases by thromboelastography platelet mapping (TEG-PM). Total 82 patients who were on aspirin and on either clopidogrel, prasugrel, or ticagrelor were evaluated. The percentage of platelet inhibition to arachidonic acid (AA) and adenosine disdiphosphate (ADP) was calculated by [100-{(MA ADP/AA–MA Fibrin) / (MA Thrombin–MA Fibrin) × 100}], taking 50% response as cut-off for HPR. HPR to clopidogrel and prasugrel was 14.29 and 12.5%, respectively. No HPR was detected to aspirin and ticagrelor. The mean percentage of platelet inhibition was significantly higher in patients with ticagrelor 82.99, 95% confidence interval (CI) of [77.3, 88.7] as compared with clopidogrel 72.21, 95% CI of [65.3, 79.1] and prasugrel 64.2, 95% CI of [52.5, 75.9] (p-value of 0.041 and 0.003, respectively). Aspirin along with ticagrelor is associated with a higher mean percentage of platelet inhibition, and lower HPR as compared with the usage of aspirin combined with clopidogrel or prasugrel. Additionally, it might also be concluded that TEG-PM could be used effectively to measure the individual platelet functions which would make oral antiplatelet therapy more personalized for cardiac patients.

Publication History

Article published online:
04 February 2021

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