Key result
The ACOMI paradigm challenges traditional STEMI criteria to identify acute coronary occlusions lacking ST elevation.
Why the study?
A critical limitation of the traditional STEMI mindset is that not all patients with acute coronary occlusion exhibit ST elevation on ECG, leading to STEMI-equivalent presentations not being treated within the same emergent care pathways.
Adopting the ACOMI paradigm over traditional STEMI criteria can facilitate earlier identification and reperfusion for patients with acute coronary occlusion lacking classic ST elevation.
Acute coronary syndrome (ACS) remains a leading cause of morbidity and mortality worldwide. Within ACS subtypes, ST-elevation myocardial infarction (STEMI) has traditionally been associated with the highest risk of death and morbidity due to complete or near complete occlusion of an epicardial coronary artery, warranting emergent reperfusion. As a result, global systems of care have been created to rapidly identify and treat patients with STEMI. However, a growing body of evidence and the latest Australian ACS guidelines, have highlighted a critical limitation of the traditional STEMI mindset; not all patients with acute coronary occlusion myocardial infarction (ACOMI) exhibit ST elevation on electrocardiography (ECG). These ‘STEMI-equivalent' presentations have similar outcomes to patients with classical ST elevation yet are not treated within the same care pathways. Early identification and reperfusion in ACOMI may have the potential to improve cardiovascular outcomes. A deeper understanding of the ECG and clinical markers of acute coronary occlusion, beyond traditional ST elevation criteria, is essential for timely diagnosis and intervention. This review explores the emerging concept of ACOMI, underscores its clinical implications and advocates for a shift in mindset in the evaluation and management of acute myocardial infarction.
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Makarious et al. (2026) conducted a review in Acute coronary syndrome (ACS) / Acute Coronary Occlusion Myocardial Infarction (ACOMI). Acute Coronary Occlusion Myocardial Infarction (ACOMI) paradigm vs. Traditional STEMI criteria was evaluated. The emerging concept of acute coronary occlusion myocardial infarction (ACOMI) highlights that not all patients with acute coronary occlusion exhibit ST elevation, advocating for a shift in diagnostic mindset.
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