• J Cardiovasc Med (Hagerstown) · Aug 2014

    Review

    Positive trend in survival to hospital discharge after out-of-hospital cardiac arrest: a quantitative review of the literature.

    • Simone Savastano, Catherine Klersy, Maurizio Raimondi, Karen Langord, Vincenzo Vanni, Roberto Rordorf, Alessandro Vicentini, Barbara Petracci, Maurizio Landolina, and Luigi Oltrona Visconti.
    • aDepartment of Cardiology bDepartment of Biometry & Statistics cAAT 118 AREU Emergency System, Fondazione IRCCS Policlinico San Matteo dAPT American Heart Association Training Centre, Bornasco, Pavia, Italy.
    • J Cardiovasc Med (Hagerstown). 2014 Aug 1;15(8):609-15.

    BackgroundSeven editions of cardiopulmonary resuscitation (CPR) and emergency cardiovascular care guidelines have been published with many changes, in particular, about CPR.ObjectivesThe aim of our study was to evaluate the temporal trend of survival to hospital discharge after out-of-hospital cardiac arrest (OHCA) as a possible effect of guidelines changes.MethodsWe searched PubMed for observational studies on 'survival to hospital discharge after OHCA'. Survival to discharge was the primary outcome; prehospital return of spontaneous circulation and survival to hospital admission were our secondary endpoints. All data were analyzed according to the year of inclusion: group 1 before 2000; group 2 between 2000 and 2005; and group 3 after 2005. Mortality rates were compared between groups by means of a group frequency-weighted log-linear model.ResultsWe considered 38 of 201 studies for a total of 156 301 patients. Survival to hospital discharge rate was 5.0% [95% confidence interval (CI) 4.9-5.2) in group 1; 6.1% (95% CI 5.9-6.4) in group 2; and 9.1% (95% CI 8.9-9.4) in group 3 (P < 0.001). A statistically significant decrease in risk of mortality in group 2 vs. group 1 (risk ratio 0.988, 95% CI 0. 985-0.0.992, P < 0.001) and in group 3 vs. group 2 (risk ratio 0.967, 95% CI 0.964-0.971, P < 0.001) was observed. Similar trends were observed for return of spontaneous circulation and survival to hospital admission.ConclusionSurvival to hospital discharge after OHCA has significantly improved. Many aspects may influence survival, but surely, the reduction of time and an early and good quality CPR have positively influenced the outcome.

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