What is the purpose of CABG surgery?

• A. To replace the aortic valve
• B. Use of grafts to bypass obstructed areas of the coronary arteries
• C. To reduce heart rate
• D. To remove clots from the ventricles

Answer: (B)

CABG aims to restore blood flow to heart muscle by bypassing narrowed or blocked segments of the coronary arteries using grafts. By connecting grafts from the aorta (or another source) to arteries beyond the blockage, blood can reach areas that were receiving insufficient supply, relieving angina and improving heart function, especially in cases with disease in multiple vessels. This is why using grafts to bypass obstructed coronary arteries is the correct description of the procedure’s purpose. It’s not about replacing a valve, reducing heart rate, or removing clots from the ventricles, which involve entirely different interventions.