Now blood can flow through the new arteries to the heart the way it should. Over time, cells, fats and cholesterol called plaque can build up in the walls of your arteries. Plaque blocks the blood flow to your heart and can lead to chest discomfort called angina or to a heart attack. Almost half a million coronary bypass operations are performed each year. Your doctor will take a blood vessel from your chest or from your leg.
Blood can now flow through the new channel to the heart.
You will be asleep during the operation. It can take 3 to 6 hours. You'll wake up in ICU and may feel confused at first. It's busy in ICU and the lights are always on. It's normal to lose track of time.