Step 1

Physiology 3

A 56-year-old man is brought to the emergency department by ambulance complaining of shortness of breath, chest tightness, and profuse diaphoresis. The patient reports that he had a heart attack "sometime in his late 40s." The patient takes lisinopril, atorvastatin, and a baby aspirin daily. He was given two doses of nitroglycerin by paramedics in the field. An electrocardiogram is ordered, oxygen is provided by nasal cannula, and intravenous access is obtained.

Which of the following electrocardiogram results would indicate irreversible necrotic tissue damage to this patient's heart?

  • A) Deep Q waves
  • B) Inverted T waves
  • C) ST segment depression
  • D) ST segment elevation
  • E) The presence of U waves


Matthew Christensen


Dr. Ted O'Connell

Last updated

Sep 08, 2022


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