The damaged arteries of the heart are generally replaced with the help of a bypass surgery. A heart bypass surgery or a gastric bypass surgery, depending on the damage and the area of the same, will be conducted by a cardiologist. This kind of surgery is also known as a coronary bypass surgery and it usually entails repairing the damage so that there is better flow of blood to and from the heart of the patient.When there is a great build up of plaque on the walls of the arteries, it may choke one to all four of the arteries, which will lead to a restriction of the blood flow. This is when a person becomes a patient of coronary heart disease. These kind of patients are the ideal candidates for this kind of surgery so that the condition is tackled before it becomes a fatality. This kind of surgery will also be recommended by the cardiologist, when the blockage becomes too severe for mere medication and lifestyle changes to help.The benefit of coronary artery surgery is that a stent is installed for better passage of blood and oxygen. Yet, recover takes a long time. Also, one has to make several lifestyle changes and abstain from unhealthy habits like smoking and excessive drinking as well as junk food consumption for better chances of avoiding a recurrence of such blockages.