Aug 29, 2001

Performance and error analysis of automated external defibrillator use in the out-of-hospital setting

Annals of Emergency Medicine
R D MacdonaldC Weinstein

Abstract

We determined whether automated external defibrillators (AEDs) can meet the American Heart Association performance criteria to detect and shock unstable cardiac rhythms (ventricular fibrillation [VF], ventricular tachycardia [VT]) in the setting of an out-of-hospital cardiac arrest. AED performance was reviewed for cardiac arrests occurring between January 1, 1995, and December 31, 1997. After every cardiac arrest, data regarding each rhythm analyzed and subsequent response (shock or no shock) were downloaded from the AED memory module. The study paramedic and study physician independently reviewed each case and interpreted cardiac rhythms from downloaded AED data. The emergency medical services medical director resolved all discrepancies in a blinded manner. All cases of out-of-hospital cardiac arrest in which an AED was turned on and a rhythm analyzed were included. The primary objective was the correct identification and defibrillation of VF or VT. Sensitivity, specificity, and predictive values with 95% confidence intervals (CIs) were calculated. Sources of error in AED rhythm management are also described. A total of 3,448 AED rhythms were available for interpretation. Sensitivity and specificity for appropriate AED manage...Continue Reading

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Mentioned in this Paper

Ophthalmoplegia
Ventricular Fibrillation
Emergency Care
Survival Analysis
Basic Cardiac Life Support
Shock
Etiology
Cardiac Rhythm Type
Tachycardia, Ventricular
Ventilation, Function (Observable Entity)

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