title: [Analysis of death-related factors of type B aortic dissection treated medically during the acute phase].
abstract: OBJECTIVE
  To analyze the death-related risk factors of type B aortic dissection treated medically during the acute phase (symptoms presenting within 14 d), and to determine the predictors of surgical indications for acute type B aortic dissection.
  
  
  METHODS
  Clinical data of 42 patients with acute type B aortic dissection admitted from January 2007 to May 2009 was retrospectively reviewed. There were 33 male and 9 female with a mean age of (50 +/- 12) years old. Therapy included analgesia, controlled hypotension and beta-receptor blocker, the mortality in acute phase was 33.3% (14/42). Univariate and multivariate logistic regression analyses were performed to identify the predictors of the death in acute phase.
  
  
  RESULTS
  In univariate logistic regression analysis, the malperfusion of aortic branches (P = 0.018) and maximum aortic diameter (P = 0.002) were significant predictors of death. In the multivariate logistic regression model, the malperfusion of aortic branches (P = 0.041) and maximum aortic diameter (P = 0.005) were also considered as the significant death-related factors.Risk of death augmented significantly (P = 0.000) when the maximum aortic diameter over 40 mm.
  
  
  CONCLUSIONS
  Malperfusion of aortic branches and the large maximum aortic diameter (> 40 mm) are the indications of surgery or endovascular therapy for acute type B aortic dissection.
authors.affiliation: Division of Vascular and Thyroid Surgery, Department of General Surgery, First Hospital of China Medical University, Shenyang, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Shi-jie
authors.initials: SJ
authors.lastname: Xin
authors.forename: Liang
authors.initials: L
authors.lastname: Xiao
authors.forename: Ling
authors.initials: L
authors.lastname: Ren
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Hai-di
authors.initials: HD
authors.lastname: Hu
authors.forename: Qing-bin
authors.initials: QB
authors.lastname: Song
authors.forename: Xin-hua
authors.initials: XH
authors.lastname: Hu
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.forename: Zan-song
authors.initials: ZS
authors.lastname: Zhang
authors.forename: De-hua
authors.initials: DH
authors.lastname: Yang
authors.forename: Chuan-jiang
authors.initials: CJ
authors.lastname: Wang
authors.forename: Zhi-quan
authors.initials: ZQ
authors.lastname: Duan
authors.forename: Ke
authors.initials: K
authors.lastname: Xu
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000784:Aortic Dissection / Q000188:drug therapy / Q000401:mortality*; D001014:Aortic Aneurysm / Q000188:drug therapy / Q000401:mortality*; D002423:Cause of Death; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors