Wanda Comes to the Emergency Department Complaining of Substernal Chest

Multiple Choice

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?

A) Formation of Q wave
B) Depression of ST segment
C) Widened QRS complex
D) Tall T wave