Leads II, III and aVF show inferior wall.

 
Reciprocal changes in leads V1 to V3 denote posterior wall myocardial infarction.







ECG 1. The ECG above belongs to a 40 years-old diabetic woman with chest pain of 2-hours duration.
Leads II, III and aVF show ST segment elevation (inferior wall myocardial infarction).
Reciprocal changes (ST depression) in leads V1 and V2 show posterior wall extension.
The above ECG is compatible with acute inferoposterior wall myocardial infarction.
She underwent urgent coronary angiography which showed proximal obstruction of the dominant right coronary artery (RCA).
Her Left Anterior Descending (LAD) and Circumflex (Cx) coronary arteries did not have significant obstruction.
Her RCA was successfully stented.

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