title: Scoring system for traumatic liver injury (SSTLI) in polytraumatic patients: a predictor of mortality.
abstract: OBJECTIVE
  The aim of this study was to examine prognostic factors in polytraumatic patients with liver injury and to develop a scoring system for traumatic liver injury (SSTLI) to predict mortality.
  
  
  METHODS
  The medical records of 175 patients treated for traumatic liver injury from July 2009 to April 2013 were reviewed. The primary outcome variable was hospital mortality. All risk factors were analyzed by multivariate logistic regression analysis. The SSTLI was created based on the predictive power of each factor.
  
  
  RESULTS
  Age, injury severity score (ISS), trauma and injury severity score, the shock index, and the volume of packed red blood cells transfused were strong predictors of mortality. We hypothesized that the SSTLI would use five clinical measures (total bilirubin, prothrombin time, serum creatinine, age, and ISS). Each measure was scored 0-1 (age and ISS) or 0-3 (total bilirubin, prothrombin time, and creatinine), with 3 indicating the most severe derangement. The receiver-operating characteristic curve of the SSTLI was significant at post-traumatic days 0, 1, 3, and 5 [area under the curve (AUC), 0.830; AUC, 0.912; AUC, 0.941; and AUC, 0.930, respectively]. A value of 5 points was the threshold for reliability dividing low-risk (<5) from high-risk (≥5) patients.
  
  
  CONCLUSIONS
  The SSTLI may be available to predict mortality in polytraumatic patients with liver injury, although external validation is needed before widespread implementation.
authors.affiliation: Department of Trauma Surgery, Pusan National University Hospital, 179 Gudeok-Ro, Seo-Gu, Busan, 602-739, Korea, gskhh@naver.com.
authors.forename: H H
authors.initials: HH
authors.lastname: Kim
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.forename: C-Y
authors.initials: CY
authors.lastname: Park
authors.forename: H M
authors.initials: HM
authors.lastname: Cho
mesh_terms: D000007:Abdominal Injuries / Q000175:diagnosis / Q000401:mortality / Q000601:surgery; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D019540:Area Under Curve; D002423:Cause of Death; D016208:Databases, Factual; D005260:Female; D017052:Hospital Mortality / Q000639:trends; D006801:Humans; D008099:Liver / Q000293:injuries* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009104:Multiple Trauma / Q000175:diagnosis / Q000401:mortality* / Q000601:surgery; D011237:Predictive Value of Tests; D012372:ROC Curve; D012189:Retrospective Studies; D018570:Risk Assessment; D012737:Sex Factors; D016019:Survival Analysis; D015599:Trauma Severity Indices; D014481:United States; D055815:Young Adult