Below is an instruction from Human. Write a response.
    ### Instruction:
    Do you have information about Coronary Artery Bypass Surgery
    ### Response:
    Summary : In coronary artery disease (CAD), the arteries that supply blood and oxygen to your heart muscle grow hardened and narrowed. You may try treatments such as lifestyle changes, medicines, and angioplasty, a procedure to open the arteries. If these treatments don't help, you may need coronary artery bypass surgery.
    