Emre K. Aslanger

Department of Cardiology, Pendik Training and Research Hospital, Marmara University, Istanbul, Turkey

Keywords: Acute coronary syndrome, coronary occlusion, electrocardiogram, myocardial infarction, ST‑segment elevation


The ST-segment elevation (STE) myocardial infarction (MI)/non-STEMI (NSTEMI) paradigm has been the central dogma of emergency cardiology for the last 30 years. Although it was a major breakthrough when it was first introduced, it is now one of the most important obstacles to the further progression of modern MI care. In this article, we trace why a disease with an established underlying pathology (acute coronary occlusion [ACO]) was unintentionally labeled with a surrogate electrocardiographic sign (STEMI/NSTEMI) instead of pathologic substrate itself (ACO-MI/ non ACO MI or occlusion MI [OMI]/non OMI [NOMI] for short), how this fundamental mistake caused important clinical consequences, and why we should change this paradigm with a better one, namely OMI/NOMI paradigm.

How to cite this article: Aslanger EK. Beyond the ST-segment in Occlusion Myocardial Infarction (OMI): Diagnosing the OMI-nous. Turk J Emerg Med 2023;23:1-4.

Author Contributions

All by Emre Aslanger.

Conflict of Interest

None Declared.

Financial Disclosure