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Concept
Aortic rupture
Summary
Aortic rupture is the rupture or breakage of the aorta, the largest artery in the body. Aortic rupture is a rare, extremely dangerous condition. The most common cause is an abdominal aortic aneurysm that has ruptured spontaneously. Aortic rupture is distinct from aortic dissection, which is a tear through the inner wall of the aorta that can block the flow of blood through the aorta to the heart or abdominal organs.
An aortic rupture can be classified according to its cause into one of the following main types:
Traumatic aortic rupture
Aortic rupture secondary to an aortic aneurysm
Tearing pain, located in the abdomen, flank, groin, or back
Loss of consciousness
Low blood pressure from hypovolemic shock
Fast heart rate
Blue discoloration of the skin
Altered mental status
Bruising of the flank, a sign of retroperitoneal bleeding.
Death
The most common cause of aortic rupture is a ruptured aortic aneurysm. Other causes include trauma and iatrogenic (procedure-related) causes.
The wall of the aorta is an elastic structure which requires integrity. Rupture results from either loss of wall strength to the point at which systemic pressure is greater than wall strength, or external destruction of the wall of the aorta, by a tumor or traumatic means. The bleeding can be retroperitoneal or intraperitoneal, or the rupture can create an aortocaval (between the aorta and inferior vena cava) or aortoenteric (between the aorta and intestine) fistula.
The condition is often suspected in patients close to death with abdominal trauma or with relevant risk-factors. Diagnosis may be confirmed by ultrasound or X-ray computed tomography (CT) scan.
Prevention of aortic rupture begins with screening for disease of the aorta. If indicated, treatment with EVAR or open repair of the diseased aorta can limit the risk of aortic rupture.
Aortic ruptures can be repaired surgically via open aortic surgery or using endovascular therapy (EVAR), regardless of cause, just as non-ruptured aortic aneurysms are repaired.
Official source
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