Raphael, in his third-year medical internship, was alone in the hospital emergency room (ER) one night. It was unusually quiet in the ER, so the resident doctors were getting some much-needed sleep. A patient, Ms. Rose, was brought in showing signs of serious dehydration. Raphael tried to give her water but she vomited. Feeling that he must try something else and not wanting to wake the residents, he administered 1 liter (L) of sterile distilled water intravenously (IV). Assume for simplicity that red blood cells (RBC) contain only solutes to which the RBC membrane is impermeable. The osmolarity of the RBC is 300 mOsm/L. 1. Predict the direction of change (increase, decrease, no change) you would expect to Ms. Rose’s infusion to have produced in the listed parameters. Explain. a. Ms. Rose’s plasma osmolarity after the infusion b. Ms. Rose’s RBC volume after the infusion equilibrates with blood
Raphael, in his third-year medical internship, was alone in the hospital emergency room (ER) one night. It was unusually quiet in the ER, so the resident doctors were getting some much-needed sleep. A patient, Ms. Rose, was brought in showing signs of serious dehydration. Raphael tried to give her water but she vomited. Feeling that he must try something else and not wanting to wake the residents, he administered 1 liter (L) of sterile distilled water intravenously (IV). Assume for simplicity that red blood cells (RBC) contain only solutes to which the RBC membrane is impermeable. The osmolarity of the RBC is 300 mOsm/L.
1. Predict the direction of change (increase, decrease, no change) you would expect to Ms. Rose’s infusion to have produced in the listed parameters. Explain.
a. Ms. Rose’s plasma osmolarity after the infusion
b. Ms. Rose’s RBC volume after the infusion equilibrates with blood
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