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Kaplan Qbank USMLE



Author4 Posts
  #1

Predict the changes in Extracellular fluid volume, Iintracellular Fluid volume & body osmolality (increase, decrease, no change) when a normal red blood cell previously equilibrated in isotonic saline is then placed in the following solution. Determine the initial effect versus the long term effect

.................ECF volume ......ICF volume .......Body Osmolality
1. 150 mOsm Glycerol

a. Initial _________ _________ __________
b. Final _________ _________ __________

2. 300 mOsm Glycerol

a. Initial _________ _________ __________
b. Final _________ _________ __________

3. 500 mOsm Glycerol

a. Initial _________ _________ __________
b. Final _________ _________ __________

4. 150 mOsm Urea

a. Initial _________ _________ __________
b. Final _________ _________ __________

5. 300 mOsm Urea

a. Initial _________ _________ __________
b. Final _________ _________ __________

6. 500 mOsm Urea

a. Initial _________ _________ __________
b. Final _________ _________ __________

  #2

This is a question regarding principles of rapidly penetrating and slow penetrating solutes on body compartment. As discussed in Chapter 2 of the kaplan book.




  #3

However, I have difficulty finding the answer. Kindly tell how this goes..

  #4

The answers are:

a. Swell and keep swelling

b. initially no change later swelling

c. initially shrink then come back to normal then swell

d, e, f, : Keep swelling



Bye. Hope it helped








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