Electrolyte Management in Critical Care · NCLEX Exam

What should the nurse do if a mechanically ventilated ICU patient with hypophosphatemia experiences respiratory muscle weakness, hemolysis, and impaired ATP generation?

  1. Stop all nutrition support immediately and reassess
  2. Replace phosphate, as depletion impairs respiratory muscle and ATP
  3. Ignore phosphate because the level will self-correct quickly
  4. Give hypertonic saline to address the weakness
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Correct answer: Replace phosphate, as depletion impairs respiratory muscle and ATP

Hypophosphatemia impairs ATP generation and respiratory muscle (including diaphragm) contractility and can cause hemolysis; the nurse should check and replace phosphate to restore muscle and cellular energy function.

Difficulty: Hard Question 14 of 15

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