Angiography
Your doctor may recommend coronary angiography if you have signs or symptoms of coronary heart disease (CHD).
- What Is Coronary Angiography?
- What To Expect Before Coronary Angiography?
- What To Expect After Coronary Angiography ?
- Key Points - Coronary angiography
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What Is Coronary Angiography?
Coronary angiography is a test that uses dye and special x rays to show the inside of your coronary arteries. The coronary arteries supply oxygen-rich blood to your heart.
A material called plaque (plak) can build up on the inside walls of the coronary arteries, causing them to narrow. When this happens, it's called coronary heart disease (CHD) or coronary artery disease.
CHD can prevent enough blood from flowing to your heart and can lead to angina and heart attack. (Angina is chest pain or discomfort.) Coronary angiography shows whether you have CHD.
Most of the time, the coronary arteries can't be seen on an x ray. During coronary angiography, special dye is injected into the bloodstream to make the coronary arteries show up on an x ray.
A procedure called cardiac catheterization is used to get the dye to your coronary arteries. A long, thin, flexible tube called a catheter is put into a blood vessel in your arm, groin (upper thigh), or neck.
The tube is then threaded into your coronary arteries, and the dye is injected into your bloodstream. Special x rays are taken while the dye is flowing through the coronary arteries.
Cardiologists (heart specialists) usually do cardiac catheterization in a hospital. You're awake during the procedure. It usually causes little to no pain, although you may feel some soreness in the blood vessel where your doctor put the catheter.
Cardiac catheterization rarely causes serious complications.
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Who Needs Coronary Angiography?
Your doctor may recommend coronary angiography if you have signs or symptoms of coronary heart disease (CHD). Signs and symptoms include:
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Angina. This is unexplained pain or pressure in your chest. You also may feel it in your shoulders, arms, neck, jaw, or back. Angina may only happen when you're active. Emotional stress also can trigger the pain.
- Sudden cardiac arrest. This is a condition in which your heart suddenly and unexpectedly stops beating.
- Results from an EKG (electrocardiogram), exercise stress test, or other test that suggest you have heart disease.
You also may need coronary angiography on an emergency basis if you're having a heart attack. This test, combined with a procedure called angioplasty, can open the blocked artery that's causing the heart attack and prevent further damage to your heart.
Coronary angiography also can help your doctor decide how to treat CHD after a heart attack. This is especially true if the heart attack caused major damage to your heart, or if you're still having chest pain.