Highlights
- •The impact of procedural myocardial infarction (MI) is matter of controversy.
- •Type 4a MI is significantly associated with mortality.
- •Including “stand-alone MI” in procedural MI weakens its prognostic value.
- •Evidence does not support other than type 4a MI as endpoint in clinical trials.
Abstract
The prognostic role of procedural myocardial infarction (MI) is still controversial
and matter of ongoing debate in the scientific community. A recent ESC Consensus Document
confirmed the prognostic importance of type 4a MI and defined equally clinically relevant
the major peri‑procedural myocardial injury, defined as the same cardiac Troponin
cut-off threshold of type 4a MI without peri‑procedural angiographic complications,
electrocardiographic or imaging evidence of new myocardial ischaemia. In the present
manuscript we discuss available data supporting this paradigm shift and discuss some
drawbacks which should be taken into account in interpreting the results. In light
of recent mounting evidence, we challenge the prognostic relevance of major periprocedural
myocardial injury, suggesting that type 4a MI should be the only definition for procedural
MI to be used as an endpoint in clinical trials.
Graphical abstract

Graphical Abstract
Keywords
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References
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Article info
Publication history
Published online: November 18, 2021
Accepted:
November 9,
2021
Received in revised form:
November 3,
2021
Received:
September 25,
2021
Identification
Copyright
© 2021 European Federation of Internal Medicine. Published by Elsevier B.V. All rights reserved.