Science Memes

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submitted 1 day ago by [email protected] to c/[email protected]

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[–] [email protected] 139 points 1 day ago (39 children)

The bite actually doesn't kill you, it just shuts down your nervous system so you can't breath.

People if given cpr immediately (kind of need someone to know it's what bit you) till it wears off / get on a ventilator will live.

I remember reading about someone who survived. They got but, and a team started doing cpr. The only issue was his eyes were open the entire time on a hot sunny day. So he was blind after the damage the hot sun did.

[–] [email protected] 21 points 1 day ago (15 children)

Blind as permanently blind?

[–] [email protected] 38 points 1 day ago (14 children)

Correct, nothing can move, not your lungs, not your eye lids, nothing. So he went very blind from staring at the sun for 30mins straight while people did cpr until ambulance arrived

[–] [email protected] 5 points 1 day ago (2 children)

What about the heart?

[–] [email protected] 8 points 21 hours ago* (last edited 21 hours ago)

It would take a very large dose to affect the heart and even then it would just lead to a slower heart rate instead of stopping it. The heart does not need nerves to tell it to beat and it's action potential triggering is different than muscles and nerves. They'll be brain dead from being without oxygen before they're heart dead, similar to opioid overdoses.

[–] [email protected] 7 points 1 day ago (1 children)

Thus the CPR, I would imagine.

[–] [email protected] 2 points 23 hours ago (1 children)

Does it just automatically restart beating after effects wear off?

[–] [email protected] 3 points 23 hours ago (2 children)

I would personally imagine that you may need to be defibrillated at some point but otherwise probably yes? The toxins are causing the paralysis and people do survive it so I can only imagine that the heart takes back over after a certain amount of effort. Otherwise, I don't actually know.

[–] [email protected] 6 points 22 hours ago (1 children)

Defibrillation is only useful if the problem is your heart is doing some kind of fibrillation.

If it's not beating at all, other methods like manual massage or chemical restarts (epinephrine) are the right move.

[–] [email protected] 2 points 21 hours ago

Gotcha. My CPR training was so long ago, and the only relevant information that really stuck with me was "the AED will directly instruct you if it thinks a shock is helpful based on what it detects", after that the specifics just kinda fell through my brain.

[–] [email protected] 4 points 21 hours ago (1 children)

You might need external/transesophageal pacing with a severe exposure to TTX, but that would only be temporary. It shouldn't cause v fib.

[–] [email protected] 1 points 21 hours ago

Gotcha! My brain did the "heart stop = defibrillator" thing. Thanks!

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