If the LD50 is 4 stories

[roja]

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Then I will make sure that I will throw myself from my 11th floor if I don't drag myself out of the despondancy of not being in Miami. 🙁


Whaaaaaaaaaaaaaaaaaaah. I wasn't ready to come home yet! I dont wanna leave Ryder or the beach!

 

[Apollyon]

4 stories? Where did you get that? I thought it was twice your height, if you land on your head, for 50%.

4 stories, your melon opens like, well, a melon.

11 stories, you pop when you hit the ground.

 

[southerndoc]

LD50 is quoted as 48 feet, LD90 as 72 or 90 feet (I've read two sources for it).

Not sure if I read it in the ATLS text, in Tintinalli, or somewhere else. I've read it a few times though, and I've also heard it discussed on trauma rounds. I think the data is from the 80's and hasn't been updated since.

 

[ERMudPhud]

I think the data is from the 80's and hasn't been updated since.

I think people probably hit the ground just as hard twenty years ago 😀

As for Apollyon's point the LD50 was calculated based on all jumpers most of whom didn't hit head first.

 

[DeLaughterDO]

I think people probably hit the ground just as hard twenty years ago 😀

As for Apollyon's point the LD50 was calculated based on all jumpers most of whom didn't hit head first.

Maybe the ground is softer now? I'm sure the population density is greater, as is the obesity rate, so is stands to reason the chance of landing on a nice soft body is increased as well - which could theoretically decrease the mortality (of the jumper.. maybe not the person jumped upon) considerably. Should we get a grant to study whether the data has changed?

Honestly, basing your medical judgement on data that is 20+ years old - that's... that's ARCHAIC!!

😀

 

[BKN]

LD50 is quoted as 48 feet, LD90 as 72 or 90 feet (I've read two sources for it).

Not sure if I read it in the ATLS text, in Tintinalli, or somewhere else. I've read it a few times though, and I've also heard it discussed on trauma rounds. I think the data is from the 80's and hasn't been updated since.

I think I actually read the paper back then. My memory was other than hitting your head first deaths started at 3 stories (30 feet), LD50 4 stories (40 feet), LD 100 5 stories (50 feet).

On the other hand, BKN is gettin old and may not remember so good anymore.

😕 😴

And here's the pimp question: If you fall and land on your feet, what are the likely fatal injuries? Roja you ought to have seen some of this in NY?

 

[Apollyon]

And here's the pimp question: If you fall and land on your feet, what are the likely fatal injuries? Roja you ought to have seen some of this in NY?

Calcaneal fracture --> look for spinal compression/burst fractures - especially lumbar

I thought it was impaction of femora into the pelvis (shearing off the acetabulum) causing internal exsanguination and aortic shear/avulsion from the differential deceleration.

 

[Apollyon]

Surprisingly, this is a hard stat to find. It seems like the data supports most people jumping (vs accidental fall) first, land on their feet, and second, live.

 

[a_ditchdoc]

What are the chances you would rip your aorta at fifty feet?

As an aside, I had a kid a few months ago, about 6-7 years old, that "fell" from six stories. Fortunately, he landed on a mattress/mattresses. I have my suspicians that he was just a brave little bugger and jumped, although he wouldn't admit it. Full body CT was unremarkable...observation and dress abrasions...all were amazed.

 

[deleted6669]

What are the chances you would rip your aorta at fifty feet?

As an aside, I had a kid a few months ago, about 6-7 years old, that "fell" from six stories. Fortunately, he landed on a mattress/mattresses. I have my suspicians that he was just a brave little bugger and jumped, although he wouldn't admit it. Full body CT was unremarkable...observation and dress abrasions...all were amazed.

similar story...about 5 yrs ago 5 yr old kid falls out 10th floor window hitting tree branches all the way down....huge workup.....abrasions and ankle sprain.....

 

[roja]

OH. My. Lord.



If I didn't want to jump before, I do now. 😉



(surprisingly in NYC, most of the jumpers we see are dead. Had one or two spring breakers jumping and accidentally falling....it all seems to be in the landing

 

[a_ditchdoc]

Roja,


I agree about the landing. Hell, you can survive falling from a few thousand feet with no problem...it is that sudden stop at the end that gets you...

 

[BKN]

OH. My. Lord.
If I didn't want to jump before, I do now. 😉

😛 Well, EX-CUSE me!

The point is that if you have sudden deceleration from high speed on the axis, the serious injuries are completely different from the usual MVC transverse load.

The deaths are usually due to hollow organ ruptures and mesenteric tears with bleeding and intestinal ischemia.

Apollyon's right about the skeletal injuries with falls from lesser heights. If you land with legs and ankles braced, rather than doing a proper parachute roll, the energy is transmitted up your axial skeleton and fractures occur at joints. The frequency is more or less: calcaneous, lumbar vertebrae, femoral neck, talus, cervical vertebrae, tibial plateau. We see a fair amount of this from idiots jumping off bridges and wall trying to get away from la migra.

Nice to see the seniors talking advanced stuff. Hang in roja, residency ends. And then the big responsibility begins. But you can do it at the beach if you want. 😉

 

[roja]

I think I am just still in shock not seeing the ocean, palm trees and balmy weather every time I look outside. I am sure I'll adjust back to NYC... maybe. 🙂