Coronary bypass surgery redirects blood around a section of a blocked or partially blocked artery in your heart. The procedure involves taking a healthy blood vessel from your leg, arm or chest and connecting it below and above the blocked arteries in your heart. With a new pathway, blood flow to the heart muscle improves. Coronary bypass surgery doesn't cure the heart disease that caused the blockages, such as atherosclerosis or coronary artery disease. However, it can ease symptoms, such as chest pain and shortness of breath. For some people, this procedure can improve heart function and reduce the risk of dying of heart disease. Coronary bypass surgery might also be performed in emergency situations, such as a heart attack if you're not responding to other treatments. Even with coronary bypass surgery, you'll need to make lifestyle changes after surgery. Medications are prescribed routinely after coronary bypass surgery to lower your blood cholesterol, reduce the risk of developing a blood clot and help your heart work as well as possible. Your risk of developing complications is generally low, but it depends on your health before surgery. Your risk of complications is higher if the surgery is done as an emergency procedure or if you have other medical conditions, such as emphysema, kidney disease, diabetes or blocked arteries in your legs. Your doctor will give you specific instructions about activity restrictions and changes in your diet or medications that you should make before surgery.
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