Before the procedure
A coronary angiogram is done in a hospital or medical center in a room called a catheterization laboratory. It's often called a cath lab. Before the test, your healthcare team talks to you about the medicines you take and your allergies.
You change into a hospital gown and empty your bladder, if needed. Do not wear contact lenses, eyeglasses, jewelry or hairpins.
The care team checks your blood pressure and pulse. Sticky patches, called electrodes, are placed on your chest and sometimes the arms or legs. The patches record your heartbeat. They stay on for the entire test and for a while after.
A healthcare professional may shave a small amount of hair from the area where a flexible tube, called a catheter, will be inserted. The area is cleaned and then numbed.
During the procedure
During a coronary angiogram, you lie on your back on a table. Straps go across your chest and legs to keep you safely on the table.
A healthcare professional places an
IV
into a vein in your forearm or hand. Medicine called a sedative goes through the
IV. The medicine helps you feel relaxed and calm during the test or treatment. It may make you feel sleepy.
The amount of sedation you need depends on the reason for the coronary angiogram and your overall health. You may be fully awake or lightly sedated. Or you may be given a combination of medicines to put you in a sleep-like state. This is called general anesthesia.
The doctor makes a small cut, called an incision, to reach an artery. This cut may be made in the leg or wrist. A thin, flexible tube called a catheter is placed in the artery and guided to the heart. You shouldn't feel it moving through your body.
Once the catheter is in the correct position, dye flows through the tube into the heart's blood vessels. X-ray images are taken to see how the dye moves. These images are called angiograms. If the dye doesn't move through a blood vessel, it could mean the area is blocked or narrowed.
An uncomplicated coronary angiogram may take an hour or longer to complete. It depends on whether other heart tests or treatments are done at the same time. If a blockage is found, a balloon may be passed through the catheter and expanded to widen the artery. A mesh tube called a stent may be placed to keep the artery open.
When the test or treatment is done, the catheter is removed from the body. A clamp or small plug may be used to close the small incision.
After the procedure
After a coronary angiogram, you are taken to a recovery area. A healthcare team watches you and checks your heartbeat, blood pressure and oxygen levels.
If the catheter was placed in the leg area, you must lie flat for several hours. This helps prevent bleeding. The area where the catheter was placed may feel sore for a while. You may have a bruise and a small bump.
Some people go home the same day after having a coronary angiogram. Others stay in the hospital for a day or more, depending on the results of the test.
As you recover, follow these general tips:
- Drink plenty of fluids to help flush the dye from your body.
- Avoid strenuous exercise and heavy lifting for several days.
- Ask your healthcare team when you can bathe and shower.
- Take your medicines as directed by your care team.
Your care team tells you when you can return to work and daily activities.
Call your healthcare professional's office if you have:
- Chest pain or shortness of breath.
- Bleeding, new bruising, swelling or increasing pain at the catheter site.
- Symptoms of infection, such as a fever.
- Drainage or a change in color around the incision. This may be a shade of red, purple or brown depending on your skin color.
- A change in temperature or color of the leg or arm that was used for the test.
- Weakness or numbness in a leg or arm.
Call 911 or your local emergency number if the area where the catheter was placed keeps bleeding and doesn't stop with pressure.