I had a bare-metal stent implanted nearly five years ago and now my doctor says that I will need a new one put in that same artery.  How does that process work?
D023903:Coronary Restenosis / Q000517:prevention & control* / Q000601:surgery; D004868:Equipment Failure; D006801:Humans; D012307:Risk Factors; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome