Automated External Defibrillator, a portable medical device that diagnoses cardiac arrhythmias and can deliver electrical therapy to restore normal heart rhythm during sudden cardiac arrest.
Acronym formed from 'Automated External Defibrillator,' with 'defibrillator' coming from 'de-' (removal) and 'fibrillation' (from Latin 'fibrilla,' small fiber), referring to the chaotic quivering of heart muscle fibers.
AEDs are designed to be so user-friendly that they can guide untrained bystanders through life-saving procedures with voice prompts and visual cues. The devices are incredibly smart - they analyze heart rhythms and will only deliver a shock if it's actually needed, making them safe for non-medical users.
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