Skip to content

Heart Disease Health Center

Font Size
A
A
A

Angiogram

Risks

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.

  • There is a chance of an allergic reaction to the iodine dye. The reaction can be mild (itching, rash) or severe (trouble breathing or sudden shock). Most reactions can be treated with medicines. Be sure to tell your doctor if you have hay fever, asthma, or iodine allergy or food allergies.
  • There is a small chance that the catheter may damage a blood vessel or dislodge a piece of clotted blood or fat from the vessel wall. The clot or fat can block blood flow to the brain, arm, leg, or intestine (bowel).
  • Bleeding from the needle site may occur. Also, a blood clot can form where the catheter was inserted. This may cause some blockage of the blood flow in the arm or leg.
  • The iodine dye used for the test can cause water loss or direct damage to the kidneys. This is a special concern for people who have kidney problems, diabetes, or who are dehydrated. Special measures are used during the test to prevent problems for people who need an angiogram and have these conditions.
  • There is always a small chance of damage to cells or tissue from being exposed to any radiation, even the low level used for this test.

Results

An angiogram is an X-ray test that uses a special dye and camera (fluoroscopy) to take pictures of the blood flow in an artery (such as the aorta) or a vein (such as the vena cava). Your doctor may tell you some results right after the test. Full results are usually ready the same day.

Angiogram

Normal:

The blood vessels are normal in shape, size, location, and number.

The dye flows evenly through the blood vessels.

No narrowing, blockage, bulging, or other problem of the blood vessels is seen.

Abnormal:

Blood vessels that are not in their normal position may mean that a tumor or other growth is pushing against them.

A narrow spot in an artery may mean that a fat deposit, calcium deposit, or clot is reducing blood flow through the blood vessel.

A bulge in a blood vessel may mean a weakness in the blood vessel wall (aneurysm).

Dye that leaks out of a blood vessel may mean a hole in the blood vessel.

There is abnormal branching of blood vessels present since birth (congenital).

An abnormal pattern of blood vessels may mean that a tumor is present.

1 | 2 | 3 | 4 | 5 | 6 | 7

WebMD Medical Reference from Healthwise

Last Updated: November 27, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

Today on WebMD

x-ray of human heart
A visual guide.
atrial fibrillation
Symptoms and causes.
 
heart rate graph
10 things to never do.
Compressed heart
Article
 
empty football helmet
Article
red wine
Video
 
eating blueberries
Article
Simple Steps to Lower Cholesterol
Slideshow
 
Inside A Heart Attack
SLIDESHOW
Omega 3 Sources
SLIDESHOW
 
Salt Shockers
SLIDESHOW
lowering blood pressure
SLIDESHOW