Evidence-Based Performance Measures for Emergency Medical Services Systems: A Model for Expanded EMS BenchmarkingA Statement Developed by the 2007 Consortium U.S. Metropolitan Municipalities' EMS Medical Directors (Appendix)

Section of EMF Homeland Security & Disaster Medicine, The University of Texas Southwestern Medical Center, Dallas, TX 75390-8579, USA.
Prehospital Emergency Care (Impact Factor: 1.86). 07/2009; 12(2). DOI: 10.1080/10903120801903793

ABSTRACT There are few evidence-based measures of emergency medical services (EMS) system performance. In many jurisdictions, response-time intervals for advanced life support units andresuscitation rates for victims of cardiac arrest are the primary measures of EMS system performance. The association of the former with patient outcomes is not supported explicitly by the medical literature, while the latter focuses on a very small proportion of the EMS patient population andthus does not represent a sufficiently broad selection of patients. While these metrics have their place in performance measurement, a more robust method to measure andbenchmark EMS performance is needed. The 2007 U.S. Metropolitan Municipalties' EMS Medical Directors' Consortium has developed the following model that encompasses a broader range of clinical situations, including myocardial infarction, pulmonary edema, bronchospasm, status epilepticus, andtrauma. Where possible, the benefit conferred by EMS interventions is presented in the number needed to treat format. It is hoped that utilization of this model will serve to improve EMS system design anddeployment strategies while enhancing the benchmarking andsharing of best practices among EMS systems.

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