I worked Cardiac Rehab full time the last 10 years before I retired, but, I worked CCU/Cardiac Rehab split for many years before that so I got to see many of the patients coming and going, plus I also did inpt teaching before the pt were discharged from CCU or Cardiac Surgical telemetry. We also did heart transplants, LVADS, etc. etc. So the hospital was very intensive and something new was always coming around to learn. Cardiac rehab was great as it was not as physically demanding as CCU but the same brain stress was there. Plus, I was the only full time RN, we did finally get certification but that took a great deal of time.