An enlarged aorta is referred to as an aortic aneurysm, and treatment for this condition varies, according to WebMD. Generally, an aortic aneurysm or bulge that is over 5.5 centimeters in diameter is treated surgically. A smaller aortic aneurysm is normally managed with medication, such as beta-blockers.
Small aortic aneurysms have a very low risk of rupture, and the general consensus is that the risks of surgery far outweigh the risks of medication, according to WebMD. Regular testing is done to ensure that the aorta is not enlarging further. Lifestyle changes that can help improve aorta aneurysms include exercise and a healthy diet.