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A Comparison of AEDs

Early access to defibrillation is critical to saving victims of sudden cardiac arrest. Before purchasing an AED you MUST thoroughly evaluate its reliability, ease-of-use, innovative AED technology and the service or training options offered by the manufacturer.

The technical information for this AED comparison was derived from the operator's manuals provided with each AED and other publicly available sources.


ManufacturerCardiac Science
Product ModelLifePak CRPlusHeartStart OnSiteAED Plus
Requires user initiated testing NoYesYesYes
Electrodes tested for presenceYesNoYesYes
Electrodes tested for functionalityYesNoYesNo
Visible battery capacity gaugeYesNoNoNo
Status indicatorVisual and audibleVisualVisual and audibleVisual and audible
Buttons to operate1232
Pre-connected electrodesYesYesYesYes
Non-polarized electrodes (interchangeable) YesNoUnknownNo
Text displayYesNoNoYes
Additional electrode placement promptsYesYesYesNo
Enhanced CPR promptsYesNoYesYes
Biphasic Technology    
Energy protocol optionsYesYesNoYes
First shock efficacy 100%100%Unknown99%
Analysis algorithm    
Programmable VF/VT rate, detection rateYes, 120-240 bpmNo, 120 bpmYes, 160-600 bpm depending on parametersNo, 150 bpm
Asystole threshold (mV)
Noise (artifact) detection during analysisYesYesYesYes
Non-committed shockYesNoYesNo
Monitor heart rhythm during CPR (option)YesNoNoNo
Optional SVT therapyYesNoNoNo
Synchronized shockYesNoNoNo
Pacemaker pulse detectionYesNoYesNo
Added Features    
Internal memory for ECG data60 minutes20 minutes15 minutes20 minutes
Compatible with manual defibrillatorsYesYesYesYes
Pediatric CapabilityYesYesYesYes
Pediatric electrodesYesYesYesYes
AED warranty7 years5 years for commercial and consumer and 1 year for EMS5 years5 years
Unconditional battery warranty (full operational replacement)4 years90 daysnot offered none if purchased through consumer, 1 year from factory

1. As indicated in FDA approval submissions.

2. For the Philips product, publicly available data from the FDA approval process was for a 115J and 130J energy protocol waveform, which had an 86% first shock efficacy (Bardy GH, et al., Circulation, 1996;94:2507-2514). Philips claims the current energy protocol for the OnSite product is a 150J waveform. No known data exists in comparable electrophysiology laboratory clinical settings for this waveform.

3. Philips does not specify whether their electrodes are or are not polarized. Each pad indicates that it should be placed in a specific location on the torso (OnSite owners manual, REF: 011667-0005 page 14).

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