Patient ED @ 617-379-1582 INFO.rnYour doctor has recommended that you undergo a cardiac catheterization. But what does that actually mean?rnrnThe heart is located in the center of the chest. It’s job is to keep blood continually circulating throughout the body.rnrnThe blood vessels that carry oxygen-rich blood away from the heart are called arteries.rnrnThe largest and most important of these is the aorta.rnrnThe vessels that bring blood back into the heart are called veins.rnrnSometimes, these blood vessels can grow narrower or become blocked in such a way that normal blood flow is restricted. In simple terms, a cardiac catheterization is a diagnostic procedure used when your doctor believes that blood is not flowing normally in and or around your heart. rnrnIn simple terms, a cardiac catheterization is a diagnostic procedure used when your doctor believes that blood is not flowing normally in and or around your heart.rnrnDuring a cardiac catheterization, a heart specialist will insert a thin tube into an artery in the arm or leg and gently guide it towards the problem area in the heart.rnrnOnce the tube is in place, a special dye is injected and a series of x-rays are taken.rnrnThese x-rays allow your doctor to see exactly how blood is flowing in your heart. Less