1. Use figure 5.4 to help you answer all parts of question 1. You are starting w
ID: 179197 • Letter: 1
Question
1. Use figure 5.4 to help you answer all parts of question 1. You are starting with an individual who has a total fluid volume of 3 liters (L) with an osmolarity of 280 milliosmolar (mosM; mosm/L). The fluid is divided among the body compartments such that the extracellular fluid (ECF) contains 1 Land the intracellular fluid (ICF) contains 2 L a. Determine the amount of solute in the atotal body, the bECF and the ICF. Show your work. (2 points) b. The individual received a 1 Lof 450 mosM intravenous (IV) solution containing equal parts of saline (NaCl) and dextrose (a penetrating sugar). Determine the final osmolarity, final fluid volumes of the DECF and ICF, d final amounts of solute in the ECF and eICF. NOTE: solving this requires multiple steps and you must show your work to receive credit. (5 points)Explanation / Answer
1.b Osmolarity of patient = 280 mOsM.
Total fluid volume = 3 L
Total solute in body = 280 x 3 = 840 mOsmoles.
IV fluid is 1 L of 450 mOsM.
Total fluid volume = 4L
total solute in IV fluid = 450 mosmoles.
After drip total number of solutes in body = 1290 mosmoles.
Total osmolarity = 1290/4 = 322.5 mOsM.
ecf fluid volume 1.5 L, icf fluid volume = 2.5 L
ECF solute = 1.5 x 322.5 = 483.75 mosmoles
ICF solute = 2.5 x 322.5 = 806.25 mosmoles.
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