Inferior wall infarction is indicated by Q waves and ST elevations in which leads?

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Multiple Choice

Inferior wall infarction is indicated by Q waves and ST elevations in which leads?

Inferior wall infarction shows changes in the ECG leads that view the bottom surface of the heart. The inferior wall is seen best by leads II, III, and aVF, which look up toward the heart’s inferior aspect. When a transmural infarct involves this region, you typically see ST elevations and, as the infarction evolves, Q waves in those inferior leads. This pattern points to involvement of the inferior wall, usually from occlusion of the right coronary artery. Other lead groups correspond to different heart regions: lateral changes appear in leads I and aVL, anterior/septal changes in V1–V3 (and V4–V6 for the anterior-lateral area).

Inferior wall infarction shows changes in the ECG leads that view the bottom surface of the heart. The inferior wall is seen best by leads II, III, and aVF, which look up toward the heart’s inferior aspect. When a transmural infarct involves this region, you typically see ST elevations and, as the infarction evolves, Q waves in those inferior leads. This pattern points to involvement of the inferior wall, usually from occlusion of the right coronary artery. Other lead groups correspond to different heart regions: lateral changes appear in leads I and aVL, anterior/septal changes in V1–V3 (and V4–V6 for the anterior-lateral area).

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