Prevention and treatment of restenosis in era of drug-eluting stent

Drug-eluting stent(DES) could effectively decrease the rate of restenosis of percutaneous coronary intervention(PCI) and extend scope of PCI.However,the restenosis of DES is a focus with complex lesion and samples more and more.It had become the new challenge of treating restenosis of DES.This paper reviews the causes,characteristic,prognosis factors and treatment strategy.