August 12, 2026Journal of the American College of Cardiology
Third Universal Definition of Myocardial Infarction
Design
Guideline
Authors
Discussion
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Member takes
Key expert perspectives
Captured external expert commentary on this paper, strongest first. Original sources are linked where available.
“This is one of the most controversial areas in the definition of myocardial infarction. There are a large number of people undergoing PCI in the setting of an acute MI. It's almost impossible to know whether a subsequent increase in troponin was part and parcel of the acute MI or related to the procedure itself.”
“This is a controversial area because interventional cardiologists and surgeons do not want MI as a complication. It means that they want to set the levels of troponin as high as possible. It was also difficult to reach a consensus because it's impossible to conduct a clinical trial to find the answer.”
“The newly revised universal definition of MI is based on the latest scientific information concerning this critically important diagnosis. There is much new material in this third revision, including discussions on how to interpret elevated blood troponin levels in patients with renal failure, HF, critical illness, and various cardiac and noncardiac procedures. There is also revision of the, at times, confusing category of type 2 MI.”
Overview
Standardizes MI diagnosis across trials and registries; leaves open prospective validation with high-sensitivity assays.
Key Points
- The aim is to refine the universal definition of myocardial infarction for improved diagnosis and management.
- Formation of multiple subcommittees focused on various aspects such as biomarkers and imaging.
- Expert consensus drawn from global professionals in cardiology.
- Consensus leading to updated guidelines on biomarker usage in diagnosing myocardial infarction.
- Emphasis on the role of advanced imaging and ECG in the classification of myocardial events.
PICO
P
Population
Myocardial Infarction
This document provides the third universal definition of myocardial infarction, establishing consensus criteria for its diagnosis.
Cite This Study
Thygesen et al. (2012) conducted a review in Myocardial Infarction. The Third Universal Definition of Myocardial Infarction provides updated consensus criteria for the classification and diagnosis of myocardial infarction.