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Traumatic Aortic Rupture Information by :
Juliet Cohen
Traumatic aortic rupture also called traumatic aortic disruption and transection. Traumatic aortic rupture (TAR) is a life-threatening injury. The injury is usually caused by high speed impacts such as those that occur in vehicle collisions and serious falls. It may be due to different rates of deceleration of the heart and the aorta, which is in a fixed position. By far the most common site for tearing in traumatic aortic rupture is the aortic isthmus, near where the left subclavian artery branches off from the aorta. It usually occurs in the region corresponding to the aortic isthmus (located between the left subclavian and the first intercostal arteries) as a result of shear forces generated by unrestrained frontal collisions or by side-impact crashes.
The major risk of TAR is adventitial rupture which usually results in lethal hemorrhage.
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