Fluid question / Goljan

[stronghold]

In one of his audios, he asks:
how many liters of isotonic saline do you have to infuse to get 1 liter into the plasma?
He answers: 3! 2 will end up in intertitial space and 1 lit end up in vascular compartment.



I don't know why 3, not 4. Isn't plasma volume 1/4th of the extracellular fluid

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[GunbydayJREbynt]

In one of his audios, he asks:
how many liters of isotonic saline do you have to infuse to get 1 liter into the plasma?
He answers: 3! 2 will end up in intertitial space and 1 lit end up in vascular compartment.



I don't know why 3, not 4. Isn't plasma volume 1/4th of the extracellular fluid

I could be not remembering correctly, but doesnt he say right before that that the plasma is 1/3 of the ECF? So that answer is based off of him assuming a different ratio of plasma to interstitial fluid than you or Costanzo does. So just ignore it when you hear it and assume you would need 4. Thats what I do.

By the way, there will be more situations like this throughout your listening, so stay on your toes!

 

[stronghold]

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