What is it?

A coronary angiogram, also known as a left heart catherization (LHC), is a minimally invasive procedure used to detect coronary artery disease and other various abnormal heart conditions as well as overall heart function. This imaging test uses a special dye and x-ray images to visualize the heart, the arterial blood vessels of the heart as well as the blood flow within the heart, and blood flow leaving the heart.

Why would you need it?

The results of this test are used for diagnosis and treatment of various heart disorders and conditions.  This test will be used to detect blood flow within the vessels of the heart, also known as the coronary arteries.  By doing this, the doctor will be able to directly see blockages or narrowed areas within the vessels that may be
hindering proper blood flow to the heart. This test can also be used to measure the amount of blood being pumped out of your heart and to the rest of your body per minute.  This measurement is known as cardiac output and is a very important measurement used to see how well the heart can keep up with your body’s needs. A LHC can also directly measure the pressures of blood within the chambers of the heart and the major vessels going from the heart to the lungs.  The valves of the heart will also be checked for abnormalities using this test.

After the Procedure

Following the procedure, you will be taken to a recovery area where your cardiac status and procedure site will be monitored for 1-3 hours.

Going Home

You will be able to go home the same day of the procedure, although you will not be able to drive yourself for the first 24 hours after.  You will need to arrange in advance for someone to drive you home.

You must refrain from any activity that requires heavy lifting, straining, or vigorous leg activity for at least 5 days because it may cause bleeding. If bleeding does occur, apply heavy continuous pressure and call 911 immediately.  You must also refrain from drinking alcohol or smoking for the first 24 hours.

The dressing over the puncture site may be removed 24 hours after the procedure.  At this time, the patient may shower and gently clean site. After shower the site may be patted dry and left open to air. Ointments,
bandages, or creams are NOT necessary.

It is normal to experience some discomfort and discoloration at the puncture site.  There may also be a small knot the size of a pea, this is also expected.  You may take an over the counter pain relief medication, such as acetaminophen (Tylenol) or ibuprofen (Advil or Motrin). If at any point there is redness accompanied with drainage, pain, swelling, fever or chills, or the site is hot to the touch, these may be signs of an infection and must be reported to the doctor IMMEDIATELY.

How long does the test last?

The procedure can last anywhere from 30 minutes to 2 hours.