Pathophysiology of Burn Injury · NCLEX Exam

What happens to myocardial function in burn shock, even after adequate fluid resuscitation?

  1. Myocardial contractility reliably normalizes immediately after fluids
  2. Myocardial depression may persist with high SVR and low cardiac output
  3. Myocardial function is essentially never affected by a major burn injury
  4. Myocardial contractility increases markedly due to resulting hypervolemia
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Correct answer: Myocardial depression may persist with high SVR and low cardiac output

Burn shock involves not only hypovolemia but also myocardial depression and increased afterload, so even with fluid resuscitation, cardiac output may remain depressed.

Difficulty: Medium Question 13 of 20

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