is participating in a re

Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
Problem 1SRQ
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A 65-kg man is participating in a research study for
which it is necessary to know the volumes of his body
fluid compartments. To measure these volumes, the
man is injected with 100 mCi (millicurie) of H20 and
500 mg of mannitol. During a 2-hour equilibration
period, he excretes 10% of the H,0 and 10% of the
mannitol in his urine. Following equilibration, the
concentration of H,0 in plasma is 0.213 mCi/100 mL
and the concentration of mannitol is 3.2 mg/100 mL.
What is his total body water, his ECF volume, and his
ICF volume? Is the man's total body water appropriate
for his weight?
Transcribed Image Text:A 65-kg man is participating in a research study for which it is necessary to know the volumes of his body fluid compartments. To measure these volumes, the man is injected with 100 mCi (millicurie) of H20 and 500 mg of mannitol. During a 2-hour equilibration period, he excretes 10% of the H,0 and 10% of the mannitol in his urine. Following equilibration, the concentration of H,0 in plasma is 0.213 mCi/100 mL and the concentration of mannitol is 3.2 mg/100 mL. What is his total body water, his ECF volume, and his ICF volume? Is the man's total body water appropriate for his weight?
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