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Abdominal aortic aneurysm (AAA) is a localized enlargement of the abdominal aorta such that the diameter is greater than 3 cm or more than 50% larger than normal. [1] An AAA usually causes no symptoms, except during rupture. [1] Occasionally, abdominal, back, or leg pain may occur. [2] Large aneurysms can sometimes be felt by pushing on the ...
For abdominal aneurysms, the current treatment guidelines for abdominal aortic aneurysms suggest elective surgical repair when the diameter of the aneurysm is greater than 5 cm (2 in). However, recent data on patients aged 60–76 suggest medical management for abdominal aneurysms with a diameter of less than 5.5 cm (2 in). [27]
Abdominal aortic aneurysm involves a regional dilation of the aorta and is diagnosed using ultrasonography, computed tomography, or magnetic resonance imaging. A segment of the aorta that is found to be greater than 50% larger than that of a healthy individual of the same sex and age is considered aneurysmal. [9]
Focused assessment with sonography in trauma (commonly abbreviated as FAST) is a rapid bedside ultrasound examination performed by surgeons, emergency physicians, and paramedics as a screening test for blood around the heart (pericardial effusion) or abdominal organs (hemoperitoneum) after trauma.
In human anatomy, the abdominal aorta is the largest artery in the abdominal cavity. As part of the aorta , it is a direct continuation of the descending aorta (of the thorax ). [ 1 ]
Aortic rupture is the breakage of all walls of the aorta, the largest artery in the body. Aortic rupture is a rare, extremely dangerous condition that is considered a medical emergency . [ 1 ] The most common cause is an abdominal aortic aneurysm that has ruptured spontaneously.
Artist's rendering of a branched/fenestrated EVAR in the visceral segment of the aorta above an abdominal aortic aneurysm. Thoracoabdominal aortic aneurysms (TAAA) involve the aorta in the chest and abdomen. As such, major branch arteries to the head, arms, spinal cord, intestines, and kidneys may originate from the aneurysm.
The aorta begins to descend in the thoracic cavity and is consequently known as the thoracic aorta. After the aorta passes through the diaphragm, it is known as the abdominal aorta. The aorta ends by dividing into two major blood vessels, the common iliac arteries and a smaller midline vessel, the median sacral artery. [6]: 18