Polytetrafluoroethylene-covered stent implantation with double guiding catheter technique for the treatment of type III coronary perforation after stenting

Coronary artery perforation is a life-threatening , complication during percutaneous coronary intervention （PCI） although it occurs rarely in contemporary era with incidence ranging from 0.1% to 0.8%. The overall mortality remains quite high and varied with thestype of perforation, with higher risk in type Ⅱ and Ⅲ