Coronary disease & ACS

High-Sensitivity Cardiac Troponin and the Universal Definition of Myocardial Infarction

CirculationPublished Prespecified secondary analysis of a stepped-wedge cluster randomised controlled trial

Primary result · MI or CV deathResult — go to the resultCause-specific hazard ratio 5.64 95% CI 5.12–6.22

Authors' conclusion

Implementation of high-sensitivity cardiac troponin assays and the recommendations of the Universal Definition of Myocardial Infarction identified patients at high-risk of cardiovascular and noncardiovascular events but was not associated with consistent increases in treatment or improved outcomes.

Study context

Population
Consecutive patients with suspected ACS
Participants
48,282 patients
Comparison
Type 1 MI vs No myocardial injury
Methodological detailscluster randomized
  • Cluster randomized

Primary result

MI or CV death · 1 year

Cause-specific hazard ratio

5.64

95% CI 5.12–6.22

Type 1 MI vs No myocardial injury
cause-specific HR 5.64 (95% CI 5.12–6.22)

As reported in the abstract

Secondary outcomes

OutcomeCause-specific HR (95% CI)
Non-CV death · 1 yearAcute myocardial injury vs No myocardial injury · highest in acute myocardial injury2.65 (2.33–3.01)
MI or CV death in type 1 MI, after vs before implementation1.00 (0.82–1.21)

Increase in diagnoses after implementation

  • MI or CV death in type 1 MI, after vs before implementation: despite modest increases in antiplatelet therapy and coronary revascularization

Investigation, treatment and outcomes in type 2 MI and myocardial injury

Increased recognition did not lead to changes in investigation, treatment or outcomes

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

High-Sensitivity Cardiac Troponin and the Universal Definition of Myocardial Infarction. Circulation. Published 7 October 2019. doi:10.1161/circulationaha.119.042960

Summarised from the published abstract; every number is checked against it

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.