The Elevated High-Sensitivity Cardiac Troponin T Pilot: Diagnoses and Outcomes

Korosh Sharain, Vlad C. Vasile, Yader Sandoval, Leslie J. Donato, Casey M. Clements, James S. Newman, Brad S. Karon, Allan S. Jaffe

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To identify the diagnoses and outcomes associated with elevated high sensitivity cardiac troponin T (hs-cTnT) compared with the 4th-generation troponin T and to validate the Mayo Clinic hs-cTnT myocardial infarction algorithm cutoff values. Patients and Methods: Consecutive blood samples of patients presenting to the emergency department between July 2017 and August 2017, who had 4th-generation troponin T, were also analyzed using the hs-cTnT assay. Troponin T values, discharge diagnoses, comorbidities, and outcomes were assessed. In addition, analyses of sex-specific and hs-cTnT cutoff values were assessed. Results: Of 830 patients, 32% had an elevated 4th-generation troponin T, whereas 64% had elevated hs-cTnT. With serial sampling, 4th-generation troponin missed a chronic myocardial injury pattern and acute myocardial injury pattern in 64% and 16% of patients identified with hs-cTnT, respectively. Many of these “missed” patients had discharge diagnoses associated with cardiovascular disease, infection, or were postoperative. Five of the 6 patients with unstable angina ruled in for myocardial infarction. Conclusion: There were many increases in hs-cTnT that were missed by the 4th-generation cTnT assay. Most new increases are not related to acute cardiac causes. They were more consistent with chronic myocardial injury. High-sensitivity cTnT did reclassify most patients with unstable angina as having non–ST-elevation myocardial infarction. Older age, more comorbidities, and lower hemoglobin were associated with elevated hs-cTnT. Our data also support the use of our sex-specific cutoff values.

Original languageEnglish (US)
Pages (from-to)2366-2375
Number of pages10
JournalMayo Clinic proceedings
Volume96
Issue number9
DOIs
StatePublished - Sep 2021

ASJC Scopus subject areas

  • General Medicine

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