Coronary arteries may become blocked, either partially or totally, due to athereosclerosis and lead to an AMI. Which of the following procedures would be used to improve the coronary blood flow by building an alternate route for the blood to bypass the blockage by inserting a portion of another blood vessel, typically the saphenous vein?
A. PTCA
B. CABG
C. carotid endarterectomy
D. cardiac catheterization
Answer: C