How does the diagnostic catheterization work?
A local anesthetic is used to numb the skin in the groin area and a very small incision or “puncture” is made.
A thin, flexible tube known as a catheter is placed into the leg artery. Your cardiologist will thread the catheter through the artery to your heart. A special dye is then injected through the catheter, allowing your doctor to see heart valves and arteries on the x-ray screen.
You may experience a warm sensation in your chest when the x-ray dye is injected.