Practice Quiz

CRNE Exam Prep

Category - Changes in Health

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Wanda comes to the emergency department complaining of substernal chest pain that radiates to the neck and left arm. A 12-lead electrocardiogram is attached to Wanda to evaluate the function of the heart. A nurse examines the tracing, which suggests myocardial ischemia. Which of the following electrocardiogram changes is most likely noted by the nurse?
  1. Formation of Q wave
  2. Depression of ST segment
  3. Widened QRS complex
  4. Tall T wave
Explanation
Answer: B - Depression of ST segment is consistent with myocardial ischemia. Formation of Q wave is usually in acute myocardial infarction. Widened QRS complex is a common electrocardiogram finding in clients with bundle brunch block. Tall T wave is usually noted in clients with hyperkalemia.
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