Figure 1. Examples of 12-Lead and 7-Lead ECG Tracings
Figure 1A represents a 12-lead ECG, with evidence of intraventricular conduction delay (IVCD) but no significant ST segment changes; Figure 1B represents the 7-lead ECG of the same patient, however without significant IVCD ad with 2-3mm ST segment elevation in the inferior leads and 1-2mm ST segment depression in leads I and aVL.