Cardiac bypass surgery is an operation to restore the flow of blood through the arteries that supply blood to the heart, when a blockage or partial blockage occurs in these arteries.
The arteries that supply the heart muscle with oxygen and nutrients are known as the coronary arteries. The word "coronary" means a crown, and is the name given to these arteries that circle the heart like a crown. The narrowing of the arteries of the heart is known as coronary artery disease, which is the most common form of heart disease.
The operation, also known as a coronary
Coronary artery disease develops when one or more of the coronary arteries that supply the blood to the heart become narrower than they used to be, due to the buildup of
Deposits of cholesterol and other fat-like substances can build up in the inner lining of these blood vessels and become coated with scar tissue, forming a cholesterol-rich bump in the blood vessel wall known as
Eventually these plaque deposits can build up to significantly reduce or block blood flow to the heart. A person may experience chest pain or discomfort from inadequate blood flow to the heart, especially during exercise when the heart needs more oxygen. This is known as
For further information about angina, go to Angina.