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Author Question: A client's serum chemistry values are serum sodium level 142 mEq/L, blood urea nitrogen (BUN) 15 ... (Read 103 times)

ssal

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on: Jul 23, 2018
A client's serum chemistry values are serum sodium level 142 mEq/L, blood urea nitrogen (BUN) 15 mg/dl, and glucose level 90 mg/dl. What is the client's body fluid osmolality?
 
  a. Iso-osmolar
  b. Hypo-osmolar
  c. Hyperosmolar
  d. Hypotonic

Question 2

A client's serum osmolality is 270 mOsm/kg. What is the client's body fluid osmolality?
 
  a. Iso-osmolar
  b. Hypo-osmolar
  c. Hyperosmolar
  d. Normosmolar


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k2629

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Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: A
To calculate osmolality, use the equation:
2(serum Na concentration) + BUN/3 + glucose level/18.
2(142) + 15/3 + 90/18 = 294 mOsm/kg, or iso-osmolality.

Answer to Question 2

ANS: B
Normal osmolality is 275 to 295 mOsm/kg. This client is therefore hypo-osmolar.


ssal

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Reply 2 on: Jul 23, 2018
Excellent

chereeb

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Reply 3 on: Yesterday
Gracias!

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