Amal Mattu, MD, is a co-author of the article titled “The Electrocardiogram in the ACS Patient: High-Risk Electrocardiographic Presentations Lacking Anatomically Oriented ST-Segment Elevation,” published in the March issue of The American Journal of Emergency Medicine. In this article, Dr. Mattu and his colleagues from the University of Virginia School of Medicine and Madison County EMS in Virginia review five electrocardiographic patterns (“STEMI equivalents”) caused by occlusion of an epicardial coronary artery, which threatens the left ventricle and thus heightens the risk of poor patient outcome without prompt recognition and intervention.