Answ:
The portable defibrillator was never a metaphor, many people did not believe that the heart could restart in such a way
Explanation:
In 1775, scientists were experimenting with chickens to show that hearts could be reset and stopped using electricity. More than a century later, Swiss physiologists JL Prevost and F Batelli demonstrated that electricity could restart the hearts of dogs, and around 1925 William B. Kouwenhoven was investigating defibrillation and CPR using rats in the United States.
