Question

A 60-year-old female patient appears to be dehydrated, with a hematocrit of 0.55 (55%) and a plasma protein concentration of 8.8 g per dL (normal, ~7.0). After obtaining a plasma sample, you find that she has hyponatremia, with a plasma sodium concentration of 110 mmol/L and a plasma osmolarity of 240 mOsm/L. You decide to administer 2.0 L of 3% sodium chloride. Her body weight was 80 kg before giving the fluid. Assume the following:

Intracellular fluid volume = 40% of body weight before fluid administration
Extracellular fluid volume = 20% of body weight before fluid administration
Molecular weight of NaCl = 58.5 g/mol
No excretion of water or electrolytes
Calculate her approximate plasma osmolarity after equilibrium is reached​

Answer 1

Answer:

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