Pathophysiology of Burn Injury · NCLEX Exam

Which cellular mechanism contributes to cellular swelling and edema formation after a burn injury?

  1. Increased sodium-potassium ATPase activity driving ions out of the cell
  2. Enhanced cell membrane integrity preventing any abnormal ion movement
  3. Inhibited sodium-potassium ATPase causing intracellular sodium and water buildup
  4. Active extrusion of water from cells maintaining a normal cell volume
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Correct answer: Inhibited sodium-potassium ATPase causing intracellular sodium and water buildup

After burn injury, sodium-potassium ATPase dysfunction occurs, leading to intracellular sodium accumulation and water movement into cells, causing swelling and edema.

Difficulty: Medium Question 2 of 20

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