Myocardial Infarction · Pathology

Stunned myocardium refers to:

  1. Dead tissue that will never contract again
  2. Viable myocardium briefly dysfunctional after reperfusion
  3. Myocardium that is chronically underperfused but still alive
  4. Myocardium that has undergone hyperplastic growth
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Correct answer: Viable myocardium briefly dysfunctional after reperfusion

Stunned myocardium is a state of temporary contractile dysfunction that persists for hours to days after blood flow is restored (reperfusion). The tissue is viable and will eventually recover its function.

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