Coronary sinus perforation during reducer implantation.

Coronary Sinus Reducer (Neovasc, Inc., Richmond B.C., Canada) has shown to be an effective and safe treatment option for the treatment of refractory angina. Until now, a few number of complications related to its implantation have been reported. Coronary sinus perforation is a rare complication, more often related to cardiac surgery procedures. We report the first case of coronary sinus perforation after a sinus Reducer implantation.