This 66-year-old man presented with a complaint of chest pain. His ECG shows a "classic" inferior wall ST-elevation M.I. (STEMI). The ST elevation is apparent in Leads II, III, and aVF, which are the leads that reflect the inferior wall of the left ventricle. In addition, this ECG shows ST elevation in Leads V5 and V6, the low lateral wall. The ST depression in V1 and V2 are reciprocal changes caused by acute injury in the posterior wall. In the majority, the RCA supplies the inferior-posterior wall, the right ventricle, the right atrium (including the SA node and the AV node), and in some, the low lateral wall. The proximal location of this man's occlusive lesion has caused damage in all these areas. The relatively slow rate is common in IWMI and can be caused by SA node injury, vagal stimulation, or medications. Clinical data is not available for this patient.