Which procedure creates a new route for blood flow around blocked coronary arteries?

Which procedure creates a new route for blood flow around blocked coronary arteries?

• A. CABG
• B. Angioplasty
• C. Stenting
• D. Atherectomy

Answer: (A)

Creating a new route around blocked coronary arteries is done with coronary artery bypass grafting. In this operation, a healthy blood vessel from elsewhere in the body, such as the internal mammary artery or a saphenous vein, is grafted to the coronary artery beyond the blockage. The graft acts as an alternate pathway, delivering blood to heart muscle that would otherwise be starved by the blocked segment. This approach is particularly helpful when multiple vessels are diseased or when the blocked arteries aren’t ideal for opening with a balloon or stent. Angioplasty uses a balloon to dilate a narrowed artery, sometimes followed by stenting to keep it open; it does not create a new pathway. Stenting involves placing a scaffold inside the same artery to hold it open, not bypassing it. Atherectomy removes plaque from inside the artery to enlarge the existing lumen, again without creating a new route.

Creating a new route around blocked coronary arteries is done with coronary artery bypass grafting. In this operation, a healthy blood vessel from elsewhere in the body, such as the internal mammary artery or a saphenous vein, is grafted to the coronary artery beyond the blockage. The graft acts as an alternate pathway, delivering blood to heart muscle that would otherwise be starved by the blocked segment. This approach is particularly helpful when multiple vessels are diseased or when the blocked arteries aren’t ideal for opening with a balloon or stent.

Angioplasty uses a balloon to dilate a narrowed artery, sometimes followed by stenting to keep it open; it does not create a new pathway. Stenting involves placing a scaffold inside the same artery to hold it open, not bypassing it. Atherectomy removes plaque from inside the artery to enlarge the existing lumen, again without creating a new route.