$Unique_ID{BRK00956}
$Pretitle{Circulatory System}
$Title{What is a "Disection Aneurysm"?}
$Subject{aneurysm dissecting Marfan's diagnosis}
$Volume{G-4}
$Log{}

Copyright (c) 1991   Tribune Media Services, Inc.


What is a "Disection Aneurysm"?


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QUESTION:  We recently lost a good friend to a condition called "a Disection
Aneurysm".  It was sudden and unexpected, and we have been provided very
little explanation by his family.  Would you please discuss this condition,
and tell us what might have been done to save his life?

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ANSWER:  The definition of an aneurysm is "a sac formed by the widening
(dilatation) of the wall of a vein, artery or the heart".  My guess, from the
information contained in your letter, was that you friend suffered from an
aneurysm of the aorta, the largest artery in the body, and died when the
aneurysm ruptured.  This is the most common outcome for such a situation, and
occurs in about 70 percent of the cases.  More astounding, the diagnosis of
the aneurysm is usually not known before the life threatening crisis occurs.
There are many causes of aneurysms, most frequently arteriosclerosis in older
people, but a frequent cause of death in younger people who have Marfan's
Syndrome.  Whatever the underlying reason, the wall of the vessel is weakened,
and gradually stretches into a balloon like formation, pushed by the pressure
of the blood within the vessel.  This can occur without symptoms of any kind,
although pain may be felt in the area of the aneurysm.  Sometimes symptoms
such as hoarseness, and wheezing can result from pressure on the nerves or
other structures caused by the growing sac.  X-rays are helpful in diagnosing
the condition, but it takes a special technique called "aortography" to find
the location of a suspected aneurysm.  A "dissecting aneurysm" occurs when the
inner lining of the aorta becomes torn.  The blood clot which forms pushes its
way between the layers of the weakened wall of the vessel, separating them or
"dissecting" them.  This can continue over a period of time, until the outer
wall breaks, and rupture occurs.  Dissecting aneurysms are extremely painful
for most patients, who describe the pain as being of a "ripping" or "tearing"
character, in the chest for thoracic aneurisms and frequently taken for a
heart attack.  When an acute dissection occurs, the only treatment available
with any chance of saving the patient is surgery, to repair the tear, usually
with a graft.
ÿ
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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.
