Coronary Angiogram
Daniel Lee Kulick, MD, FACC, FSCAI
Dr. Kulick received his undergraduate and medical degrees from the University of Southern California, School of Medicine. He performed his residency in internal medicine at the Harbor-University of California Los Angeles Medical Center and a fellowship in the section of cardiology at the Los Angeles County-University of Southern California Medical Center. He is board certified in Internal Medicine and Cardiology.
Melissa Conrad Stöppler, MD
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
What is an angiogram?
An angiogram is an X-ray image of blood vessels after they are filled with a contrast material. An angiogram of the heart, a coronary angiogram, is the "gold standard" for the evaluation of coronary artery disease (CAD). A coronary angiogram can be used to identify the exact location and severity of CAD.
How is a coronary angiogram performed?
Coronary angiography is performed with the use of local anesthesia and intravenous sedation, and is generally not significantly uncomfortable.
- In performing a coronary angiogram, a doctor inserts a small
catheter (a thin hollow tube with a diameter of 2-3 mm) through the skin into an
artery in either the
groin or the arm.
- Guided with the assistance of a
fluoroscope (a special x-ray viewing instrument), the catheter is then advanced to the opening of the
coronary arteries (the blood vessels supplying blood to the heart).
- Next, a small amount of radiographic contrast (a solution containing
iodine, which is easily visualized with
X-ray images) is injected into each coronary artery. The images that are produced are called the angiogram.
- The procedure takes approximately 20-30 minutes.
- After
the procedure, the catheter is removed and the artery in the leg or arm is
either sutured, "sealed," or treated with manual compression to prevent
bleeding.
- Often, if an angioplasty or stent is indicated, it will be performed as part of the same procedure.
What does a coronary angiogram demonstrate?
Angiographic images accurately reveal the extent and severity of all coronary artery blockages. For patients with severe angina or heart attack (myocardial infarction), or those who have markedly abnormal noninvasive tests for CAD (such as stress tests), the angiogram also helps the doctor select the optimal treatment. Treatments may then include medications, balloon angioplasty, coronary stenting, atherectomy ("roto-rooter"), or coronary artery bypass surgery .
Previous contributing author: Dennis Lee, MD
Last Editorial Review: 12/10/2008
http://www.medicinenet.com/coronary_angiogram/article.htm
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