Thermoregulation and Body Fluids · USMLE Step 1

A patient receives 1 liter of D5W (5% dextrose in water). After metabolism of glucose, the fluid distributes primarily into which compartment?

  1. Intracellular fluid
  2. Extracellular fluid
  3. Plasma volume only
  4. Interstitial fluid only
Show answer and explanation

Correct answer: Intracellular fluid

D5W becomes free water after glucose metabolism and distributes across all compartments proportionally. Most water enters the intracellular space.

Difficulty: Medium Question 17 of 20

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