To determine the relative effectiveness of differences in response time interval, proportion of bystander CPR, and type and tier of emergency medical services (EMS) system on survival after out of hospital cardiac arrest.
We performed a comprehensive literature search, excluding EMS systems other than those of interest (systems of interest were those comprising one tier with providers of basic life support [BLS] or advanced life support [ALS] and those comprising two tiers with providers of BLS or BLS-defibrillation followed by ALS), patient population of fewer than 100 cardiac arrests, studies in which we could not determine the total number of arrests of presumed cardiac origin, and studies lacking data on survival to hospital discharge.
Metaanalysis using generalized linear model with dispersion estimation for random effects was then performed.
Increased survival to hospital discharge was significantly associated with tier (P<. 01), response time interval (P<. 01), and bystander CPR (P=04).
A significant interaction was detected between response time interval and bystander CPR (P=02).
For the studies analyzed, survival was 5.2% in a one-tier EMS system or 10.5% in a two-tier EMS system.
A 1-minute decrease in mean response time interval was associated with absolute increases in survival rates of. 4% and. 7% in a one-tier and two-tier EMS systems, respectively. (...)
Mots-clés Pascal : Arrêt cardiocirculatoire, Coût spécifique, Efficacité, Soin intensif, Métaanalyse, Homme, Appareil circulatoire pathologie
Mots-clés Pascal anglais : Cardiocirculatory arrest, Specific cost, Efficiency, Intensive care, Metaanalysis, Human, Cardiovascular disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0308844
Code Inist : 002B30A01C. Création : 10/04/1997.