Why the study?
Past reports on prognoses related to MI type yielded inconsistent results, potentially due to the occurrence and mortality of Type 2 MI with coronary vasospasm.
Does the presence of coronary vasospasm affect 3-year all-cause mortality in patients with Type 2 myocardial infarction compared to Type 1 myocardial infarction?
Population
2989 consecutive patients with AMI in Japan
Comparison
Type 1 MI vs Type 2 MI with CVS vs Type 2 MI with non-CVS
Design
Prospective multicenter registry
Follow-up
3-year
Authors
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Comparable Type 1/Type 2 mortality masks markedly lower risk in Type 2 MI with CVS; supports refined subtype stratification in future observational analyses.
Does the presence of coronary vasospasm affect 3-year all-cause mortality in patients with Type 2 myocardial infarction compared to Type 1 myocardial infarction?
In patients with Type 2 myocardial infarction, the absence of coronary vasospasm is associated with a significantly higher 3-year mortality compared to those with vasospasm.
Sato et al. (2020) studied this question.
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