Study on the prognostic factor of patients with ruptured abdominal aortic aneurysm after surgery        FAN Kun, REN Wei. Department of Vascular Surgery，the First Affiliated Hospital of Chongqing University of Medical Sciences，Chongqing 400016, China
Corresponding author: REN Wei，E-mail：renwei9771@yahoo.com.cn
Abstract    Objective To analyze the prognostic factor of patients with ruptured abdominal aortic aneurysm (RAAA) after surgery. Methods    The data of 40 patients with RAAA performed surgery between August 1999 and December 2010 in the First Affiliated Hospital of Chongqing University of Medical Sciences were analyzed retrospectively by age, gender, comorbidities, diameter of aneurysm, blood transfusion, operation time and duration of hypotension. The relationship of the variables with mortality was analyzed by both univariate and multivariate analyses. Results    In the univariate analysis: patients with hypotension(P=0.034) presented with 3.2 times mortality compared to patients without hypotension. Patients with duration of hypotension≥2h(P=0.008) presented with 2.6 times mortality compared to patients with duration of hypotension<2h. An increased mortality was observed in patients with coronary heart disease(P=0.028), chronic obstructive pulmonary disease(P=0.012) and renal dysfunction(P=0.028). An increased mortality was observed in patients older than 70 years(P=0.031) and in diameter of aneurysm bigger than 5cm(P=0.016). The relationship of mortality to gender(P=0.689), blood transfusion(P=0.225) and operation time(P=0.360) was not significant. In the multivariate analysis: the test showed as significant as age(P=0.040)，patients with coronary heart disease(P=0.036) and duration of hypotension(P=0.042) but not diameter of aneurysm(P=0.225) and other disease. Conclusion    E1der, coronary heart disease and duration of hypotension≥2h are the risk factors of prognosis for patients with RAAA. Shorten the duration of hypotension can improve the prognosis of patients with RAAA significantly.