Abdominal aortic aneurysms(AAAs) are a very common vascular disease with life-threatening implications.The patients usually have high rates of major cardiac and pulmonary risk factors: advanced age,hypertension,obesity,known coronary artery disease,diabetes,hyperlipidemia,smoking,and COPD.Surgical intervention has dominated the therapeutic approach to this condition.All open procedures on the AAA require large incisions and extensive dissection,clamping and unclamping of the aorta,have a significant impact on the cardiovascular system as well as those vital organs rendered ischemic or hypoperfused.How to maintain vital organ perfusion and function by the provision of stable perioperative hemodynamics is more important to overall outcome. Therefore,it requires higher levels of anesthetic technique and management.
