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An angiogram is an X-ray test that uses dye and imaging (fluoroscopy) to take pictures of the blood flow in an artery or a vein. An angiogram can be used to look at the arteries or veins in the head, arms, legs, chest, back, or belly. This test is done to look for problems in the arteries or veins.
An angiogram is done for many reasons. For example, you may have this test to find the source of bleeding, such as an ulcer. Or it may be done to look for blocked blood vessels in your lungs.
During an angiogram, the doctor will put a thin, flexible tube into a blood vessel in your groin or arm. This tube is called a catheter. The doctor guides the tube to the blood vessel that will be studied. Then a dye is injected through the tube to make the area easier to see. X-rays or pictures are taken of the area.
You may be given medicine to make you sleepy and comfortable during the test. You may or may not need to stay in the hospital overnight. You will stay in a room for at least a few hours to make sure the catheter site starts to heal.
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An angiogram is done to:
In some cases, a method called interventional radiology may be used during an angiogram to treat diseases. For example, a catheter can be used to open a blocked blood vessel, deliver medicine to a tumour, or stop intestinal bleeding caused by diverticular hemorrhage. To stop intestinal bleeding, the catheter is moved into the small artery where the bleeding is occurring, and medicine that narrows the artery or causes the blood to clot is injected through the catheter.
Procedures can be stressful. This information will help you understand what you can expect. And it will help you safely prepare for your procedure.
An angiogram can be done by different types of doctors, including a radiologist, a cardiologist, or a surgeon. Your doctor may be helped by a radiology technologist or a nurse.
You will need to take off any jewellery. You may need to take off all or most of your clothes. You will be given a gown to wear during the test.
You will have an intravenous (IV) line in a vein in your arm so your doctor can give you medicine or fluids if needed. Small pads or patches (electrodes) are placed on your arms, chest, or legs to record your heart rate and rhythm.
You will lie on your back on an X-ray table. Your healthcare team will do their best to make you comfortable.
The place where the catheter will be inserted (in the groin) will be shaved and cleaned. Your doctor will numb the area with a local anesthetic. Then the doctor will put a needle into the blood vessel. A guide wire will be put through the needle into the blood vessel and the needle will be removed. The catheter will be placed over the guide wire and moved into the blood vessel. The catheter then will be guided through the blood vessels until the tip is in the area to be studied. Your doctor will use the fluoroscope to watch the movement of the catheter in the blood vessels.
When the catheter is in place, the dye is injected through it. You may be asked to take a breath and hold it for several seconds. Imaging (X-rays) will be done. These will be available right away for your doctor to look at. You need to lie very still so the pictures are clear.
The catheter is taken out after the angiogram, and pressure is put on the site for about 20 minutes to stop any bleeding. You will be given pain medicine if you need it.
If the catheter was put in your groin, you will need to lie still and keep your leg straight for several hours. If the catheter was put in your arm, you may be able to sit up and get out of bed right away. But you will need to keep your arm still for at least 1 hour. Check with your healthcare team before getting up.
An angiogram takes 1 to 3 hours.
You may feel a brief sting or pinch from the numbing medicine. Most people don't have pain when the catheter is in the blood vessel.
You may feel pressure in the blood vessel as the catheter is moved. Let your doctor know if you are having pain.
You will probably feel some warmth when the dye is put in. This feeling lasts only a few seconds. For some people, the feeling of heat is strong. For others it is very mild.
You may have a headache, flushing of the face, or a salty or metallic taste in your mouth after the dye is used. These feelings don't last long. Some people may feel sick to their stomach but this isn't common.
After the test, you may have some tenderness and bruising at the site where the catheter was inserted.
The chance of any major problem from an angiogram is very small, but some problems can occur. In most cases, the problems occur within 2 hours after the test when you are in the recovery room. If the problem occurs during the angiogram, the test may not be completed. You may need urgent treatment that could include surgery.
Your doctor may tell you some results right after the test. Full results are usually ready the same day.
Adaptation Date: 11/18/2021
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
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