title: Systematic review and meta-analysis of routine total body CT compared with selective CT in trauma patients.
abstract: BACKGROUND
  Full-body CT scanning is increasingly being used in the initial evaluation of severely injured patients. We sought to analyse the literature to determine the benefits of full-body scanning in terms of mortality and length of time spent in the emergency department (ED).
  
  
  METHODS
  A systematic search of the Pubmed and Cochrane Library databases was performed. Eligible studies compared trauma patients managed with selective CT scanning with patients who underwent immediate full-body scanning. Using random effects modelling, the pooled OR was used to calculate the effect of routine full-body CT on mortality while the pooled weighted mean difference was used to analyse the difference in ED time.
  
  
  RESULTS
  Five studies (8180 patients) provided mortality data while four studies (6073 patients) provided data on ED time. All were non-randomised cohort studies and were prone to several sources of bias. There was no mortality difference between groups (pooled OR=0.68; 95% CI 0.43 to 1.09, p=0.11). There was a significant reduction in the time spent in the ED when patients underwent full-body CT (pooled effect size of weighted mean difference=-32.39 min; 95% CI -51.78 to -13.00; p=0.001).
  
  
  CONCLUSIONS
  We eagerly await the results of randomised controlled trials. Firm clinical outcome data are expected to emerge in the near future, though data on cost and radiation exposure will be needed before definitive conclusions can be made.
authors: Department of Surgery, , University Hospital Limerick, Limerick, Ireland.
authors: Donagh A
authors: DA
authors: Healy
authors: Aidan
authors: A
authors: Hegarty
authors: Iain
authors: I
authors: Feeley
authors: Mary
authors: M
authors: Clarke-Moloney
authors: Pierce A
authors: PA
authors: Grace
authors: Stewart R
authors: SR
authors: Walsh
mesh_terms: D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D006801:Humans; D015601:Injury Severity Score; D007902:Length of Stay; D009104:Multiple Trauma / Q000000981:diagnostic imaging* / Q000401:mortality; D016017:Odds Ratio; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: CT/MRI; Trauma; abdomen; chest; emergency department