ECG Patterns of Occlusion Myocardial Infarction: A Narrative Review
Fabrizio Ricci1, Chiara Martini2, Davide Maria Scordo2
1Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy; University Cardiology Division, SS Annunziata Polyclinic University Hospital, Chieti, Italy; Institute for Advanced Biomedical Technologies, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy.
Insights
The traditional ST-segment elevation myocardial infarction (STEMI) diagnosis overlooks acute coronary occlusion in some non-STEMI cases. A new occlusion myocardial infarction (OMI) paradigm offers improved diagnostic accuracy and timely treatment for acute coronary syndrome.
Area of Science:
- Cardiology
- Emergency Medicine
- Diagnostic Imaging
Background:
- Current acute coronary syndrome (ACS) management relies on ST-segment elevation myocardial infarction (STEMI) as a proxy for acute coronary occlusion.
- This binary STEMI/NSTEMI approach may lead to underdiagnosis of acute coronary occlusion in NSTEMI cases (25-34%).
- Limitations of the current framework necessitate a revised approach to chest pain and ACS management.
Purpose of the Study:
- To introduce the emerging occlusion myocardial infarction (OMI) paradigm.
- To enhance diagnostic accuracy and prognostic value in ACS care.
- To propose a new framework for improved triage and treatment strategies.
Main Methods:
- Review of current limitations in STEMI/NSTEMI classification.
- Identification of specific ECG patterns associated with acute coronary occlusion.
- Proposal of a new OMI framework for ACS management.
Main Results:
- The OMI paradigm distinguishes between occlusion and nonocclusion myocardial infarction (NOMI).
- It emphasizes urgency for reperfusion therapy in high-risk ECG patterns beyond current STEMI criteria.
- It advocates for viewing ACS based on underlying pathology rather than solely ECG findings.
Conclusions:
- The OMI pathway promises earlier detection of acute coronary occlusion.
- It supports timely cardiac catheterization lab activation and improved myocardial salvage.
- Further validation is needed, but the OMI approach offers significant potential for ACS clinical practice and research.
Abstract:
The traditional management of acute coronary syndrome has relied on the identification of ST-segment elevation myocardial infarction (STEMI) as a proxy of acute coronary occlusion. This conflation of STEMI with acute coronary occlusion has historically overshadowed non-ST-segment elevation myocardial infarction (NSTEMI), despite evidence suggesting 25% to 34% of NSTEMI cases may also include acute coronary occlusion. Current limitations in the STEMI/NSTEMI binary framework underscore the need for a revised approach to chest pain and acute coronary syndrome management. The emerging paradigm distinguishing occlusion myocardial infarction from nonocclusion myocardial infarction (NOMI) seeks to enhance diagnostic accuracy and prognostic effect in acute coronary syndrome care. This approach not only emphasizes the urgency of reperfusion therapy for high-risk ECG patterns not covered by current STEMI criteria, but also emphasizes the broader transition from viewing acute coronary syndrome as a disease defined by the ECG to a disease defined by its underlying pathology, for which the ECG is an important but insufficient surrogate test. This report outlines the emerging occlusion myocardial infarction paradigm, detailing specific ECG patterns linked to acute coronary occlusion, and proposes a new framework that could enhance triage accuracy and treatment strategies for acute coronary syndrome. Although further validation is required, the occlusion myocardial infarction pathway holds promise for earlier acute coronary occlusion detection, timely cath lab activation, and improved myocardial salvage-offering potentially significant implications for both clinical practice and future research in acute coronary syndrome management.
