Risk factors of hospital mortality in Stanford type A aortic dissection according to CTA morphological study
ZHANG Xue-feng1, LIU Qi1, HAO Nan-xin2, LU Jian-ping1, SHAO Cheng-wei1, GONG Jing1
1. Department of Radiology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China;2. Department of Radiology, Dongfang Hospital, Tongji University, Shanghai 200120, China
Abstract：Objective: To explore the risk factors of hospital mortality in Stanford type A aortic dissection by analyzing its morphologic characteristics on CTA and thus try to design a rational treatment planning. Method: The imaging data of computed tomography angiography(CTA) from February 2011 and February 2013 in Changhai hospital in 47 patients with Stanford type A aortic dissection were analyzed retrospectively. All the patients were divided into death group(n=12) and control group(n=35), and all CTA images were reconstructed under Vitrea FX workstation, then measured and analyzed the morphological parameters related to hospital mortality by univariate and multivariate Logistic regression model and to analyse risk factors associated with hospital mortality of type A dissection. Result: There were two morphological parameters, including diameter at maximum(Wald χ2=5.839, P=0.016, OR=1.102) area level of aorta and number of involved branches(Wald χ2=4.594, P=0.032, OR=1.337) related with hospital mortality of type A dissection patients, both parameters were risk factors. Conclusion: The transverse diameter at maximum area level of type A dissection and the number of branching vessels involved by dissection are risk factors associated with hospital mortality. It is adovocated that patients with bigger length of aortic dissection and more branched vessels involved should be treated more actively.
2014, Vol. 25 
