Which leads indicate lateral wall STEMI?

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Multiple Choice

Which leads indicate lateral wall STEMI?

ST elevations limited to the lateral-viewing leads indicate a lateral wall infarct. The lateral surface of the left ventricle is seen by leads I, aVL, V5, and V6. When these leads show ST elevation, it points to injury of the lateral wall, usually from occlusion of the left circumflex artery. By contrast, elevations in the inferior leads (II, III, aVF) indicate an inferior wall STEMI, and elevations in V1–V4 indicate septal and/or anterior wall involvement. So ST elevation in I, aVL, V5, and V6 best identifies lateral wall STEMI.

ST elevations limited to the lateral-viewing leads indicate a lateral wall infarct. The lateral surface of the left ventricle is seen by leads I, aVL, V5, and V6. When these leads show ST elevation, it points to injury of the lateral wall, usually from occlusion of the left circumflex artery. By contrast, elevations in the inferior leads (II, III, aVF) indicate an inferior wall STEMI, and elevations in V1–V4 indicate septal and/or anterior wall involvement. So ST elevation in I, aVL, V5, and V6 best identifies lateral wall STEMI.

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