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Abdominal aortic aneurysm - Overview

Alternative Names

Aneurysm - aortic; AAA

Definition of Abdominal aortic aneurysm:

An abdominal aortic aneurysm is when the large blood vessel that supplies blood to the abdomen, pelvis, and legs becomes abnormally large or balloons outward.

Causes, incidence, and risk factors:

The exact cause is unknown, but risk factors for developing an aortic aneurysm include:

Smoking
High blood pressure
High cholesterol
Male gender
Emphysema
Genetic factors
Obesity

An abdominal aortic aneurysm can develop in anyone, but is most often seen in males over 60 who have one or more risk factors. The larger the aneurysm, the more likely it is to rupture and break open.

Aortic rupture, chest X-ray

Aortic aneurysm

Reviewed last on: 8/1/2011
John A. Daller, MD, PhD, Department of Surgery, University of Arkansas Medical Sciences, Little Rock, Arkansas. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Gloviczki P, Ricotta JJ II. Aneurysmal vascular disease. In: Townsend CM, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 18th ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 65.

Greenhalgh RM, Powell JT. Endovascular repair of abdominal aortic aneurysm. N Engl J Med. 2008;358:494-501.

Lederle FA, Kane RL, MacDonald R, Wilt TJ. Systematic review: repair of unruptured abdominal aortic aneurysm. Ann Intern Med. 2007;146:735-741.

Braverman AC, Thompson RW, Sanchez LA. Diseases of the aorta. In: Bonow RO, Mann DL, Zipes DP, Libby P, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 60.

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