home *** CD-ROM | disk | FTP | other *** search
- $Unique_ID{BRK00604}
- $Pretitle{}
- $Title{What is a Coronary Angiography and is it Dangerous?}
- $Subject{angiography heart attack coronaries Special Procedures procedure test
- Tests Circulatory Coronary artery disease CAD narrowing obstruction blood
- vessels blockage pain angina Stroke Strokes}
- $Volume{P-3}
- $Log{
- The Heart's Blood Supply*0008901.scf}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
-
-
- What is a Coronary Angiography and is it Dangerous?
-
-
- ------------------------------------------------------------------------------
-
- QUESTION: I have recently had a heart attack, and though I am following all
- instructions completely, I am still having chest pains. My doctor has
- recommended a test called coronary angiography. Can you tell me about it?
- Should I have it? Is it dangerous?
-
- ------------------------------------------------------------------------------
-
- ANSWER: Coronary angiography is a very useful test, allowing doctors to
- actually visualize the arteries that supply blood to the heart. By being able
- to see these arteries, it allows the doctor to assess how severe a case of
- coronary artery disease (CAD) the patient has. This is quite important, since
- CAD is believed responsible for one-third to one-half of all deaths in the
- U.S., or about 500,000 lives every year.
- CAD is caused by a narrowing or obstruction of blood vessels that supply
- the heart with oxygen and nutrients. If a patient's heart is continually
- deprived of a sufficient amount of oxygen, it will not function normally.
- When complete blockage occurs, and the blood no longer flows to the heart, the
- heart tissue supplied by the blocked artery may die, causing a heart attack.
- When there is a continuing complaint of pain (angina) the blockage may not yet
- be complete. At that point (which seems to be where you are), it is
- imperative that the problem is treated as aggressively as possible, and
- coronary angiography will allow your doctor to choose the best treatment for
- your case. Your previous heart attack is also an additional indication for
- angiography at this time. To perform coronary angiography, a catheter is
- introduced into an artery in the body. The catheter is passed up the artery
- to the aorta (the main artery of the body). Contrast material or substances
- (one which x-rays will not pass through, and frequently referred to as a
- "dye") is then injected into the openings at the base of the aorta where the
- coronary arteries originate.
- The dye mixes with the blood and fills the passage inside the vessels and
- allows the arteries to show up on x-ray film when photographed by a special
- x-ray camera. This camera will take many pictures at a rate of from 3 to 6
- times per second, which provides detailed information about the condition of
- the arteries. At this point in time, coronary angiography gives the physician
- the best look into the coronary arteries of any test. Almost any patient
- whose treatment depends on the severity of CAD should have the procedure.
- Heart patients who have had other tests with inconclusive results may also be
- given this test. Other candidates for coronary angiography are those with
- severe angina, chest pain, or frequent heart attacks. As with almost all
- invasive procedures, there are risks associated with this test, although
- coronary angiography is considered very safe. The problem most often reported
- after this test is local damage or reaction at the place the catheter was
- inserted. The most dangerous side effects of angiography are that it may
- induce heart attack or stroke. Stroke may occur once or twice in every 4,000
- cases. Heart attacks may occur one to four times in every 1,000 angiographs.
- Death due to this test may occur in one to three cases per thousand.
- Those at greatest risk are older patients, those with severe CAD or other
- advanced cardiovascular disorders.
- The decision is up to you, but my advice from the history you have
- provided and my feeling that more information may help a well motivated
- patient to overcome your present problem is to follow your physician's advice,
- and have the procedure performed.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-
-