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Figure 1 Representative 12-lead electrocardiogram tracings at admission in a patient in (A) the left main coronary artery (LMCA) group, (B) the left anterior descending coronary artery (LAD) group and (C) the right coronary artery (RCA) group. In the patient in the LMCA group, ST segment elevation is apparent in lead aVR. In the patient in the LAD group, marked ST segment elevation in the precordial leads is seen, whereas a ST segment shift in lead aVR is negligible. In the patient in the RCA group, ST segment elevation in the inferior leads is marked.
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