Switching From Cardiac Troponin I to T

NCT05748691 | Completed

• 1 other identifier: DL-2022-046
• Study Type: observational
• Target: 26,000
• Locations: 1 country
• Sites: 1

Brief Summary

Cardiac troponin is central to the diagnosis of myocardial infarction and high-sensitivity cardiac troponin (hs-cTn) assays are the preferred choice for the assessment of patients with suspected acute coronary syndrome. Since the introduction of hs-cTn assays in Europe in 2010, most hospitals have switched from contemporary sensitive cardiac troponin assays to a hs-cTn assay. The implementation of hs-cTn assays has led to an increase in the number of patients identified with myocardial injury. Although both hs-cTnI and hs-cTnT assays are recommended in current guidelines, the impact of switching from a hs-cTnI assay to a hs-cTnT assay on clinical practice is unknown. At this point, no studies have evaluated the impact of implementing sex-specific hs-cTnT thresholds on the diagnosis of myocardial infarction and outcome in clinical practice. The investigators propose to determine the proportion of patients with and without myocardial injury admitted to the hospital before and after implementation of a hs-cTnT assay and to evaluate the impact on investigations, care and clinical outcomes in consecutive patients with suspected acute coronary syndrome.

Conditions

Acute Coronary Syndrome; Acute Myocardial Infarction; Acute Myocardial Ischemia; Myocardial Injury; Chest Pain; Heart Failure

Keywords

Acute Coronary Syndrome; Acute Myocardial Infarction; Myocardial Injury; High-Sensitivity Cardiac Troponin T; High-Sensitivity Cardiac Troponin I; Biomarker; Acute Cardiovascular Care; Diagnostic Pathways; Outcomes; Sex; Sex-specific Thresholds; Upper Reference Limits

Outcome Measures

Primary Outcomes (1)

• Proportion of patients with suspected acute coronary syndrome admitted to hospital

  To determine the proportion of patients with and without myocardial injury admitted to the hospital before and after implementation of the hs-cTnT assay

  Up to 24 hours

Secondary Outcomes (14)

• Proportion of patients with myocardial injury admitted to hospital

  Up to 24 hours

• Length of hospital stay

  Up to 30 days

• Clinical diagnosis of myocardial infarction

  Up to 24 hours

• Clinical diagnosis of heart failure

  Up to 24 hours

• Coronary angiography during hospital admission

  Up to 30 days

Study Arms (2)

Pre-implementation group

Clinical use of hs-cTnI in patients with suspected acute coronary syndrome

Post-implementation group

Clinical use of hs-cTnT in patients with suspected acute coronary syndrome

Diagnostic Test: Clinical implementation of hs-cTnT

Interventions

Clinical implementation of hs-cTnT DIAGNOSTIC_TEST

To investigate the clinical impact on the transition from a hs-cTnI assay to a hs-cTnT assay in consecutive patients presenting to the Emergency Department or Acute Medical Unit with suspected acute coronary syndrome.

Post-implementation group

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

All patients presenting to an Emergency Department or an Acute Medical Unit in NHS Lothian between October 25th 2020 and October 25th 2022 where the attending clinician measures cardiac troponin for suspected acute coronary syndrome will be identified by NHS Lothian staff or the research team using an existing screening tool embedded into the ordering of cardiac troponin testing. We will compare the clinical impact of two guideline recommended high-sensitivity cardiac troponin assays in routine health care. We will not seek individual patient consent as this is an evaluation of a change in routine clinical care using approved tests, there are no specific research procedures, and we wish to evaluate performance in those patients in whom clinicians apply the test to avoid selection bias.

You may qualify if:

• Age 18 years and over
• Symptoms of possible acute coronary syndrome
• High-sensitivity cardiac troponin measured at presentation

You may not qualify if:

• Insufficient clinical information to perform record linkage
• Previous enrolment in the study
• Patients with ST-segment elevation myocardial infarction (STEMI)

Sponsors & Collaborators

• University of Edinburgh: lead

Study Sites (1)

Centre for Cardiovascular Science

Edinburgh, EH16 4SB, United Kingdom

Location

Related Publications (20)

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• Lee KK, Ferry AV, Anand A, Strachan FE, Chapman AR, Kimenai DM, Meex SJR, Berry C, Findlay I, Reid A, Cruickshank A, Gray A, Collinson PO, Apple FS, McAllister DA, Maguire D, Fox KAA, Newby DE, Tuck C, Keerie C, Weir CJ, Shah ASV, Mills NL; High-STEACS Investigators. Sex-Specific Thresholds of High-Sensitivity Troponin in Patients With Suspected Acute Coronary Syndrome. J Am Coll Cardiol. 2019 Oct 22;74(16):2032-2043. doi: 10.1016/j.jacc.2019.07.082.

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• Shah AS, Anand A, Sandoval Y, Lee KK, Smith SW, Adamson PD, Chapman AR, Langdon T, Sandeman D, Vaswani A, Strachan FE, Ferry A, Stirzaker AG, Reid A, Gray AJ, Collinson PO, McAllister DA, Apple FS, Newby DE, Mills NL; High-STEACS investigators. High-sensitivity cardiac troponin I at presentation in patients with suspected acute coronary syndrome: a cohort study. Lancet. 2015 Dec 19;386(10012):2481-8. doi: 10.1016/S0140-6736(15)00391-8. Epub 2015 Oct 8.

  PMID: 26454362 BACKGROUND

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  PMID: 29127948 BACKGROUND

• Chapman AR, Anand A, Boeddinghaus J, Ferry AV, Sandeman D, Adamson PD, Andrews J, Tan S, Cheng SF, D'Souza M, Orme K, Strachan FE, Nestelberger T, Twerenbold R, Badertscher P, Reichlin T, Gray A, Shah ASV, Mueller C, Newby DE, Mills NL. Comparison of the Efficacy and Safety of Early Rule-Out Pathways for Acute Myocardial Infarction. Circulation. 2017 Apr 25;135(17):1586-1596. doi: 10.1161/CIRCULATIONAHA.116.025021. Epub 2016 Dec 29.

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• Kimenai DM, Janssen EBNJ, Eggers KM, Lindahl B, den Ruijter HM, Bekers O, Appelman Y, Meex SJR. Sex-Specific Versus Overall Clinical Decision Limits for Cardiac Troponin I and T for the Diagnosis of Acute Myocardial Infarction: A Systematic Review. Clin Chem. 2018 Jul;64(7):1034-1043. doi: 10.1373/clinchem.2018.286781. Epub 2018 May 29.

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  PMID: 25948541 BACKGROUND

• Kimenai DM, Gerritse BM, Lucas C, Rosseel PM, Bentala M, van Hattum P, van der Meer NJ, Scohy TV. Effectiveness of pericardial lavage with or without tranexamic acid in cardiac surgery patients receiving intravenous tranexamic acid: a randomized controlled trial. Eur J Cardiothorac Surg. 2016 Dec;50(6):1124-1131. doi: 10.1093/ejcts/ezw214. Epub 2016 Jun 21.

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• Mueller T, Egger M, Peer E, Jani E, Dieplinger B. Evaluation of sex-specific cut-off values of high-sensitivity cardiac troponin I and T assays in an emergency department setting - Results from the Linz Troponin (LITROP) study. Clin Chim Acta. 2018 Dec;487:66-74. doi: 10.1016/j.cca.2018.09.026. Epub 2018 Sep 15.

  PMID: 30227114 BACKGROUND

• Ungerer JP, Marquart L, O'Rourke PK, Wilgen U, Pretorius CJ. Concordance, variance, and outliers in 4 contemporary cardiac troponin assays: implications for harmonization. Clin Chem. 2012 Jan;58(1):274-83. doi: 10.1373/clinchem.2011.175059. Epub 2011 Nov 28.

  PMID: 22125306 BACKGROUND

• McDonald S, Furmuga J, Vigen R, et al. Assessment of agreement of two high sensitivity troponin assays during an institutional transition. Vessel Plus. 2021;5(38):1-8.

  BACKGROUND

• Karady J, Mayrhofer T, Ferencik M, Nagurney JT, Udelson JE, Kammerlander AA, Fleg JL, Peacock WF, Januzzi JL Jr, Koenig W, Hoffmann U. Discordance of High-Sensitivity Troponin Assays in Patients With Suspected Acute Coronary Syndromes. J Am Coll Cardiol. 2021 Mar 30;77(12):1487-1499. doi: 10.1016/j.jacc.2021.01.046.

  PMID: 33766254 BACKGROUND

• Anand A, Lee KK, Chapman AR, Ferry AV, Adamson PD, Strachan FE, Berry C, Findlay I, Cruikshank A, Reid A, Collinson PO, Apple FS, McAllister DA, Maguire D, Fox KAA, Newby DE, Tuck C, Harkess R, Keerie C, Weir CJ, Parker RA, Gray A, Shah ASV, Mills NL; HiSTORIC Investigatorsdagger. High-Sensitivity Cardiac Troponin on Presentation to Rule Out Myocardial Infarction: A Stepped-Wedge Cluster Randomized Controlled Trial. Circulation. 2021 Jun 8;143(23):2214-2224. doi: 10.1161/CIRCULATIONAHA.120.052380. Epub 2021 Mar 23.

  PMID: 33752439 BACKGROUND

• Boeddinghaus J, Li Z, Bularga A, Taggart C, Wereski R, Chapman AR, Lee KK, Tuck C, Gunn R, Jenks S, McCance K, Pattenden R, Malo J, Thurston AJF, Tew YY, McDermott M, Gray A, Cruden NLM, Anand A, Kimenai DM, Mills NL; TWITCH-ED Investigators. Clinical Decisions and Outcomes After Switching High-Sensitivity Cardiac Troponin Assays in Suspected ACS: An Interrupted Time-Series Study. JAMA Cardiol. 2025 Dec 17:e254661. doi: 10.1001/jamacardio.2025.4661. Online ahead of print.

  PMID: 41405901 DERIVED

MeSH Terms

Conditions

Acute Coronary Syndrome; Chest Pain; Heart Failure; Coitus

Condition Hierarchy (Ancestors)

Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Pain; Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Sexual Behavior; Behavior

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: OTHER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 9, 2023
• First Posted: March 1, 2023
• Study Start: October 25, 2020
• Primary Completion: October 25, 2023
• Study Completion: October 25, 2023
• Last Updated: May 28, 2024

Record last verified: 2024-05

Data Sharing

• IPD Sharing: Will not share

Locations

GB (1)