- When faced with a QRS with a terminal "notch" and hammock shaped ST's:
- Consider pericarditis if tachycardic.
- Consider benign early repolarization if normal rate.
- Consider hypothermia if bradycardic.
- The "aVR sign." Chest pain, ST elevation in aVR and diffuse ST depressions is 80% sensitive for LAD main and high mortality.