Tv and movies show them as a magical heart restart machine, bringing people back from the dead. But I’ve heard medical professionals say that’s not true, but they never elaborate. I’ve seen portable ones everywhere, so they must be needed fairly regularly.
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Also, there’s a time limit. If a AED is used in the first 3 minutes of whatever is going on, there’s a 70% chance of survival. At 10 minutes, it’s 10% with likely irreversible brain trauma from lack of oxygen being pumped to the brain.
The survival rate drops by about 7–10% for every minute it takes to get a AED to that person.
Note: this is why you see them everywhere, as well.
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