放支架后由于血栓形成而引起心梗，不常见，但一年之内会发生在0.5%－1%的病人身上。

比较容易发生在有糖尿病，慢性肾脏疾病的群体里。这篇文章里也谈到了手术后在对抗血小板药物种类的选择上，还有剂量等方面的考虑。

"The most feared complication related to coronary stent placement is stent thrombosis, which, although fortunately rare (occurring in ≈0.5% to 1% of patients within 1 year), most commonly presents as an acute myocardial infarction (MI)."

网上找来的文章供你参考：

http://circ.ahajournals.org/content/124/11/1283.full