this post was submitted on 20 Sep 2024
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Microblog Memes

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[–] [email protected] 44 points 1 month ago (9 children)

FYI: Defibrillators don't start the heart, they stop it.

The heart doesn't stop in many heart attacks. Instead it just beats erratically and in a way that doesn't pump blood well. Shocking the heart to stop it (what a defib does) causes the nerve cells to "reboot" and start beating regularly again.

Shocking a victim who's heart has stopped is useless and automatic defibrillators won't go off until they've detected the arrhythmia.

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