Coronary artery bypass grafting (CABG) is the most common type of open-heart surgery in the United States, with more than 500,000 surgeries performed each year. This fact sheet for patients and caregivers explains this type of revascularization surgery, and how it is used to improve blood flow to the heart in people with severe coronary artery disease. Explains what types of patients and conditions receive this surgery, what to expect before, during and after CABG. Contains links to other online resources.