Apr 13, 1999

Improved out-of-hospital cardiac arrest survival through the inexpensive optimization of an existing defibrillation program: OPALS study phase II. Ontario Prehospital Advanced Life Support

JAMA : the Journal of the American Medical Association
Ian G StiellEugene Dagnone

Abstract

Survival rates for out-of-hospital cardiac arrest are low; published survival rates in Ontario are only 2.5%. This study represents phase II of the Ontario Prehospital Advanced Life Support (OPALS) study, which is designed to systematically evaluate the effectiveness and efficiency of various prehospital interventions for patients with cardiac arrest, trauma, and critical illnesses. To assess the impact on out-of-hospital cardiac arrest survival of the implementation of a rapid defibrillation program in a large multicenter emergency medical services (EMS) system with existing basic life support and defibrillation (BLS-D) level of care. Controlled clinical trial comparing survival for 36 months before (phase I) and 12 months after (phase II) system optimization. Nineteen urban and suburban Ontario communities (populations ranging from 16 000 to 750 000 [total, 2.7 million]). All patients who had out-of-hospital cardiac arrest in the study communities for whom resuscitation was attempted by emergency responders. Study communities optimized their EMS systems to achieve the target response interval from when a call was received until a vehicle stopped with a defibrillator of 8 minutes or less for 90% of cardiac arrest cases. Workin...Continue Reading

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Mentioned in this Paper

Emergency Care
Survival Analysis
Logistic Regression
Cardiopulmonary
Electroversion Therapy
Emergency Mobile Units
EMS System
Critical Illness
Chromosome 8, Trisomy
Family Planning Program Evaluation

About this Paper

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