Abdominal aortic aneurysm overview: Difference between revisions
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===Historical Perspective=== | ===Historical Perspective=== | ||
The | The etymology of the word [[aneurysm]] comes from the Greek word for "dilatation". Abdominal aortic aneurysm as a medical condition has been recognized since ancient times, but was not been successfully treated until the early part of the 20th century. | ||
==Videos on Abdominal Aortic Aneurysm== | ==Videos on Abdominal Aortic Aneurysm== |
Revision as of 21:34, 27 October 2012
Abdominal Aortic Aneurysm Microchapters |
Differentiating Abdominal Aortic Aneurysm from other Diseases |
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Diagnosis |
Treatment |
Case Studies |
Abdominal aortic aneurysm overview On the Web |
Directions to Hospitals Treating Abdominal aortic aneurysm overview |
Risk calculators and risk factors for Abdominal aortic aneurysm overview |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Overview
Abdominal aortic aneurysm, also written as AAA and often pronounced 'triple-A', is a localized dilatation of the abdominal aorta, that exceeds the normal diameter by more than 50%. The normal diameter of the infrarenal aorta is 2cm. It is caused by a degenerative process of the aortic wall, however the exact etiology remains unknown. It is most commonly located infrarenally (90%), other possible locations are suprarenal and pararenal. The aneurysm can extend to include one or both of the iliac arteries. An aortic aneurysm may also occur in the thorax. The aorta below the renal arteries is the most common site for true arterial aneurysm. The abdominal aorta tends to be 2 cm in diameter, therefore a true AAA measures 3.0 cm or more. The normal diameter of one's aorta depends on the patient's age, sex, height, weight, race, body surface area, and baseline blood pressure. Aortic ectasia is a mild generalized dilatation (<50% of the normal diameter of ≤ 2.9 cm) that is due to age-related degenerative changes in vessel wall.
Anatomy
Classification
Aneurysms are usually classified by their shape:
Fusiform Aneurysms
- Most common type seen in the infrarenal aorta
- Diffuse, circumferential
Saccular Aneurysms
- Involve only a portion of the circumference, with a characteristic outpouching of the vessel wall.
Historical Perspective
The etymology of the word aneurysm comes from the Greek word for "dilatation". Abdominal aortic aneurysm as a medical condition has been recognized since ancient times, but was not been successfully treated until the early part of the 20th century.
Videos on Abdominal Aortic Aneurysm
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References
Acknowledgements
The content on this page was first contributed by: C. Michael Gibson M.S., M.D. Template:WH Template:WS