Abdominal Aortic Aneurysm
An aneurysm is an enlarged portion of a weak area of an artery. Over time, blood flow and pressure can cause the weak area to bulge like a balloon. An abdominal aortic aneurysm (AAA) occurs in the abdominal section of the aorta, the largest artery in the body that carries blood away from the heart.
Aneurysms can burst or rupture, causing serious internal bleeding and, if not treated, death. Other complications of aneurysm are emboli.
The risk for complications increases with the size of the aneurysm. In general, abdominal aortic aneurysms that are slightly larger than 2 inches (about 5.5 cm) in diameter should be considered for treatment. Smaller aneurysms should be monitored carefully for any enlargement.
What is an abdominal aortic aneurysm?
The aorta is the largest artery in the body ,that carries the oxygenated blood away from the heart throughout the body.
In the chest the aorta is called thoracic aorta, in the abdomen, abdominal aorta. Then the aorta divides into two branches called the iliac arteries that supply each of the two lower limbs. A normal aorta is approximately one inch or less in diameter, while an aneurysm can grow to be more than five inches in diameter.
An abdominal aortic aneurysm (AAA) is an enlargement of a weak area of this artery.
Abdominal aortic aneurysm (AAA) is a disease of the arterial wall, causing a dilation of the weakened area to enlarge like a balloon increasing fragility of the aortic wall which occurs mainly in the sixties.
The main complications of aneurysm is rupture. This is a dramatic complication most often fatal.
The risk of rupture increases with aneurysm diameter, and increases with blood pressure.