Coronary restenosis morphology after intracoronary drug eluting stents implantation

Objectives:To evaluate the morphology of in-stent restenosis after different kinds of stents.Methods: 121 Patients with 159 restenosis lesions after intracoronary interventional therapy were included in this study.Restenosis morphology of different kinds of stents were analysed.Results: The focal restenosis in drug eluting stent（DES） and bare metal stent（BMS） was 39.80% and 70.49% respectively（P=0.000）;Diffuse restenosis was 60.20% and 29.51%（P＜0.001）.The morphology of the different kinds of DES（Cypher,Taxus and Firebird） was similar（focal restenosis was 83.33%,55.56% and 75.00%,P=0.070;diffuse restenosis was 16.67%,44.44% and 25.00%,P=0.070）.Conclusion: DES changed the morphology of in-stent restenosis,from diffuse restenosis to focal restenosis;Different DES has the similar morphology of restenosis.