PLE Physio Part 2| 242 questions| with complete solutions

total body water distribution correct answer: 60% of BW: Water 40% of BW: ICF (15% interstitial, 5% plasma) 20% of BW: ECF Marker for total body water correct answer: Tritiated water Marker for ECF correct answer: Mannitol Inulin Marker for plasma correct answer: radioactive iodinated serim albumin (RISA) evans blue One gram of mannitol was injected into a woman. After equilibration, a plasma sample had a mannitol concentration of 0.08 g/L. During the equilibration period, 20% of the injected mannitol was excreted in the urine. The subject's (A) extracellular fluid (ECF) volume is 1 L (B) intracellular fluid (ICF) volume is 1 L (C) ECF volume is 10 L (D) ICF volume is 10 L (E) interstitial volume is 12.5 L correct answer: ECF volume is 10 L ECF volume = amount of mannitol/concentration of mannitol = 1 g - 0.2 g/0.08 g/L = 10 L Which of the following substances or combinations of substances could be used to measure interstitial fluid volume? (A) Mannitol (B) D2O alone (C) Evans blue (D) Inulin and D2O (E) Inulin and radioactive albumin correct answer: (E) Inulin and radioactive albumin What will happen to the ff in patient with DIARRHEA ICF Volume ICF Concentration ECF Volume ECF Concentration correct answer: ICF Volume - NO CHANGE ICF Concentration - NO CHANGE ECF Volume - WILL DECREASE ECF Concentration - NO CHANGE What will happen to the ff in patient infused with PNSS ICF Volume