This is because within one year the heart stent will endothelialize and the risk of thrombosis in the stent will be released, and only single antiplatelet therapy is needed. The main role of Bolivar is to prevent platelet aggregation that leads to thrombosis. After the cardiac stent, you can take Bolivar together with aspirin, and the two will have a better effect on the two-way antiplatelet aggregation. However, if the application time is too long, it will lead to bleeding tendency, so one year after stenting, due to the completion of stent endothelialization, the dual antiplatelet therapy can be changed to a single antiplatelet drug for basic secondary prevention of coronary heart disease.