MC cause of abdominal aortic aneurysm (AIIMS May 2009)
Abdominal aortic aneurysm (AAA) (AIIMS May 2011)
1. Abdomen (infrarenal) is the most common site of aortic aneurysm.
a. Elastin, the principal load-bearing protein present in the wall of the aorta, is reduced in the abdominal aorta as compared to the thoracic aorta.
b. The abdominal aorta does not possess vasa vasorum, hindering repair.
4. The prevalence of AAAs increases with age, with an average age of 65–70 at the time of diagnosis.
5. AAAs have been attributed to atherosclerosis.
6. There is a large risk of rupture once the size has reached 5 cm, though some AAAs may swell to over 15 cm in diameter before rupturing.
9. The pain is classically in the abdomen, back or flank. It is usually acute, severe and constant, and may radiate through the abdomen to the back.
10. The diagnosis of an abdominal aortic aneurysm by the use of ultrasound.
12. A contrast-enhanced abdominal CT scan is needed for confirmation.
1. Medical treatment
Strict blood pressure control.
2. Surgical treatment
The definitive treatment for an aortic aneurysm is surgical repair of the aorta.
Coronary Artery Disease (Ref. Hari-18th ed., Pg-1998)