TnThs for Identification Myocardial Infarction

Heidelberg University

Status: Completed

Conditions: Acute Coronary Syndrome

Study type: Observational

Funder types: Other

Identifiers

NCT00950469

TnThs 1

Details and patient eligibility

About

OBJECTIVES/BACKGROUND: We sought to determine the early diagnostic value of the new high sensitive cardiac troponin T assay (TnThs) in suspected acute coronary syndrome (ACS) and to compare it with the 4th generation cTnT assay from the same manufacturer, myoglobin and heart-type fatty acid binding protein (h-FABP).

METHODS: The study consisted of 94 patients with chest pain admitted to the chest pain unit with the diagnosis of suspected ACS without ST-Elevation. Patients were divided according to time from onset of symptoms to presentation into an early presenter group (<4 hours) and a late presenter group (≥4 hours).

A median of 6 samples (range 2-8) were available per patient. The diagnostic performance of TnThs was assessed using ROC analysis and areas under the curve (AUC) of baseline and follow-up results of TnThs, cTnT, myoglobin, and h-FABP were compared using c-statistics.

RESULTS: The TnThs assay allows an excellent prediction of non-ST-segment-elevation myocardial infarction (non-STEMI) at presentation.A follow-up sample improves diagnostic performance in a time dependent manner. The AUC of the TnThs was superior to cTnT at all time points.

CONCLUSIONS: A baseline sample of TnThs allows an earlier prediction of non-STEMI than the less sensitive and precise 4th generation cTnT assay. The excellent performance of TnThs at baseline and follow-up might obviate the need for other early necrosis markers.

Enrollment: 94 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• consecutive patients with ACS

Exclusion criteria

• Patients with ST-segment elevation at presentation were excluded as were patients with muscular trauma, or severe kidney dysfunction defined as an estimated glomerular filtration rate below 60 ml/min/1.73m2.
• In addition patients who underwent percutaneous coronary intervention during follow-up sampling were also excluded

Trial design

94 participants in 1 patient group

patients with acute coronary syndrome

Description:

94 consecutive patients without ST-segment elevation admitted to the Chest Pain Unit of the University of Heidelberg were enrolled with symptoms suggestive of ACS. Unstable angina and non-ST-segment elevation myocardial infarction were diagnosed using the joint European Society of Cardiology/American College of Cardiology/American Heart Association/World Heart Federation Task Force redefinition of myocardial infarction guidelines. Patients with ST-segment elevation were excluded.