Defibrillators were first demonstrated by Jean-Louis Provost and Frederic Batelli
In 1899, Jean-Louis Provost and Frederic Batelli at the University of Geneva, Switzerland discovered that small electrical shocks induced ventricular fibrillation in dogs, and that larger charges would reverse the condition.
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Source: Community Heartbeat Trust
Credit: Photo: Prototype defibrillator, Claude Beck Beck, 1947, collection of the National Museum of American History, courtesy Wikipedia.
