Treatment of collateral channel perforation during percutaneous coronary intervention for chronic total occlusion with retrograde approach.

We describe one case of septal and two cases of epicardial collateral channel perforation during percutaneous coronary intervention by the retrograde approach for chronic total occlusion. After coil embolization of the channel perforation area, additional treatments were required in all three cases to stop bleeding. All three cases required injection of autologous clots, with one case also requiring subsequent injection of fibrin glue.