Aortic dissection

Aortic dissection: A progressive tear in the aorta. The inner lining (intima) of the aorta tears and blood surges through the tear, creating a new false channel and separating (dissecting) the middle layer (media) from the outer layer of the aorta. Aortic dissection usually occurs in the thoracic aorta, less often the abdominal aorta. About three-f...
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aortic dissection

A pathologic process, characterised by splitting of the media layer of the aorta, which leads to formation of a dissecting aneurysm. Classified according to location as follows: type I involves the ascending aorta, transverse arch, and distal aorta; type II is confined to the ascending aorta; type III extends distally in the descending aorta. ... (...
Found on http://www.encyclo.co.uk/local/20973

aortic dissection

a dissecting aneurysm of the aorta; the usual site is the thoracic aorta. There are two types, classified according to anatomical location: Type A involves the ascending aorta, and type B originates in the descending aorta. Acute aortic dissection is often fatal within one month of onset.
Found on http://www.encyclo.co.uk/local/21001

aortic dissection

Type: Term Definitions: 1. a pathologic process, characterized by splitting of the media layer of the aorta, which leads to formation of a dissecting aneurysm. Classified according to location as follows: type I involves the ascending aorta, transverse arch, and distal aorta; type II is confined to the ascending aorta; type III extends distally in ...
Found on http://www.medilexicon.com/medicaldictionary.php?t=26108

Aortic dissection

Aortic dissection occurs when a tear in the inner wall of the aorta causes blood to flow between the layers of the wall of the aorta, forcing the layers apart. In most cases this is associated with severe characteristic chest or abdominal pain described as `tearing` in character, and often with other symptoms that result from decreased blood sup.....
Found on http://en.wikipedia.org/wiki/Aortic_dissection

aortic dissection

a tear in the aorta
Found on http://www.ruf.rice.edu/~kemmer/Words04/usage/jargon_medical.html
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