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 concentrating of urine  



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Author9 Posts
  #1

An individual must excrete 800 mOsm of solute in a 24 hour period. What volume of urine is required if the individual can concentrate the urine to only 400 mOsm /kg H2O? What volume of urine is required if this individual can concentrate the urine to 1200 mOsm/kg H20?




  #2

0.5 L and 1.5 L respectively


  #3

2L n 0.66 L respectively


  #4

mani could you please explain your ans?


  #5

here is it for first case:
pt has to excrete 800mosm. if he excretes 1L of water he can excrete 400mosm. (given in stem). so to excrete 800mosm he has to produce 2 L of urine


  #6

you'r right mani. I didn't read the Q well. Thank you smiling face


  #7

the mathematical part made sense.. but in the stem it said.. 400mmol/KG h20.. does that mean kg h20 equals i liter? can someone explain pls?

VM


  #8

L and Kg for water r approx same, better to mention in mosm/L


  #9

thanks mani!
VM





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