title: Predictive value of different scoring systems for early postoperative mortality in patients with a second coronary artery bypass grafting.
abstract: BACKGROUND
  Coronary artery bypass graft (CABG) has been developed over many years. Recently, an increasing number of patients need a second surgery for relapse of symptoms. In consideration of the high surgical risk, accurate preoperative evaluation is needed. The aim of the study was to assess the predictive value of three different risk scoring system for early postoperative mortality rate in patients with redo-CABG.
  
  
  METHODS
  Seventy-seven patients who underwent redo-CABG in Fu Wai Hospital from January 1997 to June 2013 were enrolled. All patients were retrospectively scored for early postoperative mortality rate using EuroSCORE, STS score and SinoSCORE. Overall expected mortality rates were compared with observed mortality rates. Discrimination was evaluated using receiver operating characteristic (ROC) curves and area under a ROC curve (AUC).
  
  
  RESULTS
  Four patients died after a redo-CABG 5%. The mortality rates predicted by EuroSCORE, STS score and SinoSCORE were 5.0%, 2.2% and 1.4%, respectively. The AUC of the three kinds of score were 0.465, 0.543 and 0.528, respectively, indicating a poor correlation between the observed and predicted mortality rates.
  
  
  CONCLUSIONS
  The predictive value of EuroSCORE, STS score and SinoSCORE is poor for early postoperative mortality rate in patients with redo-CABG.
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Benqing
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China. Email: drsunhs@sina.com.
authors.forename: Hansong
authors.initials: H
authors.lastname: Sun
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Shengshou
authors.initials: S
authors.lastname: Hu
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Yunhu
authors.initials: Y
authors.lastname: Song
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Lyu
authors.affiliation: Department of Cardiac Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
authors.forename: Hengchao
authors.initials: H
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D001026:Coronary Artery Bypass / Q000401:mortality*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011237:Predictive Value of Tests; D012372:ROC Curve; D012086:Reoperation / Q000401:mortality; D012189:Retrospective Studies