Left heart catheterization

Left heart catheterization is a test to check the left side of your heart. Your doctor might check the structure of your heart, the motion of your heart, or the blood pressure inside the chambers.

This test gives information about how your heart is working. It can:

• Check blood flow and blood pressure in the chambers of the heart.
• Check the pumping action of the heart.
• Find out if a heart defect is present and how severe it is.
• Find out how well the heart valves work.

• You may get medicine to help you relax.
• You will get a shot to numb the skin where the catheter goes in.
• A thin tube called a catheter is put into a blood vessel in your groin or wrist. The doctor moves the catheter through the blood vessel into your heart.
• Dye may be injected into your heart. Your doctor can watch on special monitors as the dye moves in your heart. The dye helps your doctor see blood flow in your heart.
• If a heart defect is found, cardiac catheterization sometimes is used to repair it during the test.
• After the procedure, pressure may be applied for a short time to the area where the catheter was put into your blood vessel. This will help prevent bleeding. A small device may also be used to close the blood vessel. You may have a bandage or compression device on the catheter site.
• You will stay in a room for at least a few hours to make sure the catheter site starts to heal.
• If the catheter was placed in your groin, you may lie in bed for up to a few hours. If the catheter was put in your wrist, you will need to keep your arm still for at least 1 hour.