How long do they normally function before complications (colapse, restenosis, narrow, etc) after that is it open heart surgery?? I have 2 PROMUS stents in my RCA mid and distal, and they are long. I know they don't last forever... So why would my Cardiologist tell my husband " the procedure was gorgeous, now i can tell you she might even die of something else? I don't want to get my hopes up, you know? My EF is 60% is that ok?