Understanding the Challenge: Platelet Reactivity After PCI Dual antiplatelet therapy (DAPT), typically aspirin plus a P2Y12 receptor antagonist, is standard care after percutaneous coronary intervention (PCI) with drug-eluting stents. While this regimen reduces stent thrombosis and major adverse cardiac events (MACE), patient responses vary. High residual platelet reactivity (HRPR) after clopidogrel therapy has been linked…