ST elevation in leads I and aVL is characteristic of an acute lateral wall infarct. Reciprocal ST depression is evident in this case in the inferior leads (II, III, and aVF) and in V1.
Graphic 82413 Version 2.0
Normal ECG
Normal electrocardiogram showing normal sinus rhythm at a rate of 75 beats/minute, a PR interval of 0.14 seconds, a QRS interval of 0.10 seconds, and a QRS axis of approximately 75°.