Long-term beta-blocker treatment in stable patients after myocardial infarction: a potential impact due to changes in the diagnosis of myocardial infarction?

This commentary refers to the article 'Effect of long-term beta-blocker treatment following myocardial infarction among stable, optimally treated patients without heart failure in the reperfusion era: a Danish, nationwide cohort study', by A. Holt et al., doi:10.1093/eurheartj/ehaa1058 and the discussion piece 'Temporal changes in myocardial infarction diagnostic criteria do not account for lack of long-termbeta-blocker effect on cardiovascular prognosis', by A. Holt et al., doi:10.1093/eurheartj/ehab260.