腹主动脉是主动脉在腹部的延续,是人体最大的动脉,主要负责腹腔内脏和腹壁的血液供应。当腹主动脉某段发生局限性退化扩张,使该段血管的直径超过正常腹主动脉直径的1.5倍以上时,即形成了腹主动脉瘤。据统计,有90%以上的腹主动 Abdominal aorta is a continuation of the abdomen in the abdomen, is the largest artery in the body, mainly responsible for the abdominal visceral and abdominal blood supply. When a certain section of the abdominal aortic degeneration and expansion of limitations, so that the diameter of the blood vessels more than 1.5 times the diameter of the normal abdominal aorta, the formation of abdominal aortic aneurysm. According to statistics, more than 90% of abdominal active