Which of the following sets best represents a lateral MI?

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Multiple Choice

Which of the following sets best represents a lateral MI?

Explanation:
Lateral myocardial infarction shows injury patterns in the parts of the heart viewed by the lateral leads. The lateral wall of the left ventricle is seen most clearly in leads I and aVL on the frontal plane, and in the left chest leads V5 and V6. So the set that includes these four leads best represents a lateral MI. The other groups map to different walls: leads II, III, and aVF view the inferior wall; V1–V2 view the septal region; and V3–V4 view the anterior wall. In a lateral MI you’d expect to see ST elevations in I, aVL, V5, and V6, possibly with reciprocal changes in the inferior leads.

Lateral myocardial infarction shows injury patterns in the parts of the heart viewed by the lateral leads. The lateral wall of the left ventricle is seen most clearly in leads I and aVL on the frontal plane, and in the left chest leads V5 and V6. So the set that includes these four leads best represents a lateral MI. The other groups map to different walls: leads II, III, and aVF view the inferior wall; V1–V2 view the septal region; and V3–V4 view the anterior wall. In a lateral MI you’d expect to see ST elevations in I, aVL, V5, and V6, possibly with reciprocal changes in the inferior leads.

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