In a hospital, ICU stands for Intensive Care Unit. CCU stands for Coronary Care Unit. These are places with special equipment and highly trained nurses and doctors. This is where patients go after open-heart surgery or a heart attack. You're watched around the clock. The care you get here will help you recover safely and quickly. You may stay for several days, depending on the type of heart surgery and the time you need to recover. Then you may go to a regular hospital room. © AHA