Normal sinus rhythm ST changes consistent with ischemia - specifically, occlusion of the left main coronary artery This ECG shows dramatic ST segment depression that is down-sloping — consistent ...

a posterior myocardial infarction is characterized by ST segment depression in lead V1 and frequently V2. The R wave is large in lead V1. Turn the ECG upside down, and you will see ST segment ...

Not surprisingly, this literature overlaps considerably with that linking cocaine use with myocardial ischemia and infarction ... infants (29%), while ST-segment depression was seen in only ...