title: A standardized Code Blue Team eliminates variable survival from in-hospital cardiac arrest.
abstract: BACKGROUND
  Recent studies suggest that time of day affects survival from in-hospital cardiac arrest. Lower survival rates are observed during nights and on weekends, except in areas with consistent physician care, such as the Emergency Department. Since 1997, our hospital has utilized a standard, hospital-wide "Code Blue Team" (CBT) to respond to cardiac arrests at any time. This team is always led by an emergency physician, and includes specially trained nurses.
  
  
  OBJECTIVE
  To assess if time of day or week affects survival from in-hospital cardiac arrest when a trained, consistent, emergency physician-led CBT is implemented.
  
  
  METHODS
  This is an analysis of prospectively collected data on initial survival rates (return of spontaneous circulation >20 min) of all cardiac arrests that were managed by the CBT from 2000 to 2008. Cardiac arrests were also subcategorized based on initial cardiac rhythm. Survival rates were compared according to time of day or week.
  
  
  RESULTS
  A total of 1692 cardiac arrests were included. There was no significant difference in the overall rate of initial survival between day/evening vs. night hours (odds ratio [OR] 1.04, 95% confidence interval [CI] 0.83-1.29), or between weekday vs. weekend hours (OR 1.10, 95% CI 0.85-1.38). This held true for all cardiac rhythms.
  
  
  CONCLUSIONS
  At our institution, there is no significant difference in survival from cardiac arrest when a standardized "Code Blue Team" is utilized, regardless of the time of day or week.
authors.affiliation: Department of Emergency Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033, USA.
authors.forename: Sultana A
authors.initials: SA
authors.lastname: Qureshi
authors.forename: Terence
authors.initials: T
authors.lastname: Ahern
authors.forename: Ryan
authors.initials: R
authors.lastname: O'Shea
authors.forename: Lorien
authors.initials: L
authors.lastname: Hatch
authors.forename: Sean O
authors.initials: SO
authors.lastname: Henderson
mesh_terms: D004636:Emergency Service, Hospital / Q000458:organization & administration*; D006323:Heart Arrest / Q000401:mortality*; D017052:Hospital Mortality; D006786:Hospitals, Urban / Q000706:statistics & numerical data; D006801:Humans; D016017:Odds Ratio; D010348:Patient Care Team; D011446:Prospective Studies; D015996:Survival Rate; D013995:Time