Increases in survival from out-of-hospital cardiac arrest: a five year study

Resuscitation. 2013 Aug;84(8):1089-92. doi: 10.1016/j.resuscitation.2013.03.034. Epub 2013 Apr 11.


Objective: This study reports improvements in survival from out-of-hospital cardiac arrest in London over a five year period from 2007 to 2012 and explores the potential reasons for the very striking increases observed.

Methods: Data from the London Ambulance Service's cardiac arrest registry from 2007 to 2012 were analysed retrospectively for all patients who met the Utstein comparator group criteria (an arrest of a presumed cardiac cause that was bystander witnessed with an initial rhythm of VF/VT).

Results: We observed an increase in survival from out-of-hospital cardiac arrest during the five year period, with incremental improvements each year from 12% to 32% for the Utstein comparator group of patients.

Conclusion: We suggest that a range of important changes made to pre-hospital cardiac care in London over the last five years have contributed to the observed increase in survival over the study period. In addition we advocate a range of further initiatives to continue improving survival from out-of-hospital cardiac arrest.

Keywords: Out-of-hospital cardiac arrest; Survival; Utstein.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Cardiopulmonary Resuscitation* / methods
  • Cardiopulmonary Resuscitation* / statistics & numerical data
  • Electric Countershock
  • Emergency Medical Services / methods
  • Emergency Medical Services / standards*
  • Female
  • Humans
  • Information Systems / statistics & numerical data
  • London / epidemiology
  • Male
  • Middle Aged
  • Mortality
  • Out-of-Hospital Cardiac Arrest* / etiology
  • Out-of-Hospital Cardiac Arrest* / mortality
  • Out-of-Hospital Cardiac Arrest* / therapy
  • Outcome Assessment, Health Care
  • Quality Improvement
  • Registries
  • Retrospective Studies
  • Survival Analysis
  • Time-to-Treatment
  • Ventricular Fibrillation / complications*
  • Ventricular Fibrillation / therapy