When there is narrowing, stiffness, or blockage of the coronary arteries and the patient has symptoms such as chest pain, the provider tests the patient and confirms a clinical diagnosis of heart disease. The provider then performs a coronary artery bypass graft surgery using an internal mammary graft to treat the condition and relieve the chest pain and other symptoms. An internal mammary artery graft, also known as an internal thoracic artery graft, is the most common graft taken from the chest area of a patient for a coronary artery bypass graft, or CABG procedure.
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