Immediate Defibrillation for Out-of-Hospital Ventricular Fibrillation
Despite well-developed emergency medical service (EMS) systems with rapid response advanced cardiac life support (ACLS) capabilities, survival rates for sudden out-of-hospital cardiac arrest have remained low in most venues, even for out-of-hospital ventricular fibrillation (VF), the highly-reversible cause of most sudden out-of-hospital cardiac arrest events [1–4]. These poor resuscitation rates have been attributed most often to delays in the delivery of basic cardiopulmonary resuscitation (CPR) by witnesses, or of rapid defibrillation by EMS personnel [3–4]. However, recent laboratory and clinical data have also begun to suggest that the current standard of immediately providing countershock may be detrimental when VF has been prolonged beyond several minutes [5–9].
KeywordsVentricular Fibrillation Emergency Medical Service Chest Compression Spontaneous Circulation Advance Cardiac Life Support
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