on 1-25-08 I had a pacemaker replacement. My first one was in from 6/2000 and battery life was nearing end. Had job done at NY Methodist Hosp (in Brooklyn,N.Y.). Excellant teamwork. No need to replace wires...still good. Unit is a St.Jude as was first and (thank God) never have had a problem. A St. Jude tech was there with his little black box to hook up to me and keep me going (I'm 100% dependant) while the exchange was made. Anesthesia was great...don't even remember going out.Total time for prep, in O.R. and recovery..3 1/2 hrs.. God is good.