A quantitative evaluation of ST-segment changes on the 18-lead electrocardiogram during acute coronary occlusions

ST elevation often occurred in the anteroapical (V1-V6), lateral (I, aVL), and RV lead V3R during LAD occlusions; in the inferior, RV, and posterior leads during RCA occlusions; and in the posterior, inferior, and apical leads (V5-V6) during LCX occlusions.