this post was submitted on 27 Jul 2026
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Today I Learned

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[โ€“] Kolanaki@pawb.social 39 points 3 days ago* (last edited 3 days ago) (5 children)

How can you have a heartbeat but no pulse? Aren't those the same thing? ๐Ÿคจ

[โ€“] thethrilloftime69@feddit.online 23 points 3 days ago (1 children)

Heart can continue to beat but if there's nothing to pump through the blood vessels, you won't feel a pulse.

[โ€“] sudoshakes@reddthat.com 33 points 3 days ago (1 children)

Electrical current firing in the heart can be picked up by EKG, but if there is no blood left in the tube you have no blood pressure.

[โ€“] possiblylinux127@lemmy.zip 3 points 3 days ago (2 children)

Wouldn't it run out of oxygen?

[โ€“] hansolo@lemmy.today 7 points 2 days ago (2 children)

Eventually, but it's a muscle. Salt applied to freshly butchered meat will spasm because it's still muscles with sugars left to burn.

Same thing like if someone gets decapitated. The heart might still pump for a while and shoot blood out everywhere. Doesn't mean the person of still alive.

[โ€“] possiblylinux127@lemmy.zip 1 points 1 day ago (1 children)

Have you witnessed both these things?

[โ€“] hansolo@lemmy.today 2 points 1 day ago

Just the first one in person.

[โ€“] Master@sh.itjust.works 1 points 1 day ago (1 children)

Doesnt mean they're dead. Could still have brain function a minute or SO after decapitation.

[โ€“] hansolo@lemmy.today 3 points 1 day ago

Seconds, maybe. Once the brain loses blood pressure, most functions outside the stem go offline.

[โ€“] ryannathans@aussie.zone 11 points 3 days ago (4 children)

If you cut out the heart it will beat for quite some time after death

Depends on how neatly you cut it. If you just hack and slash, it doesn't last very long at all. But, as with everything, the more you practice, the better you ...

Oh, wait.

Uh, NVM.

[โ€“] SaveTheTuaHawk@lemmy.ca 3 points 1 day ago

If you culture cardiac muscle cells, they start beating.

[โ€“] kambusha@sh.itjust.works 14 points 3 days ago (1 children)

"Things only my ex would know"

[โ€“] Kolanaki@pawb.social 0 points 3 days ago (3 children)

I am doubtful of that but I haven't ripped enough hearts out of people to know for sure.

The quite some time seems hard to believe but the idea that heart transplants occur must mean that there must be some wiggle room I guess.

[โ€“] ryannathans@aussie.zone 3 points 3 days ago

https://youtu.be/GxGZYM8IA5o

A turtle heart, same concept, nsfw

[โ€“] funkajunk@lemmy.world 1 points 3 days ago

That implies you've done it at least once ๐Ÿค”

When you heart stop beatin but she still suckin

[โ€“] deegeese@sopuli.xyz 3 points 3 days ago

Try blowing up a popped balloon and tell us how it goes.

[โ€“] Reality_Suit@lemmy.world 20 points 3 days ago* (last edited 3 days ago)

PEA: pulseless electrical activity. But, when reading the article, it sounds like his body may have gone into hypovolemic shock. Long story short: When the body goes into systemic shock, it will vasoconstrict to pull all the blood to the vital organs, so your heart could still be beating but not have the pressure/volume to be able to detect a pulse.

[โ€“] Pistcow@lemmy.world 10 points 3 days ago (1 children)
[โ€“] Cort@lemmy.world 24 points 3 days ago (1 children)

Yeah, but the opposite. He has no heart but somehow has a pulse

[โ€“] kyonshi@piefed.social 3 points 2 days ago

Mitchell McConnell hasn't looked like he had a pulse for the last 20 years. The man looked like he was made from off-brand play-doh