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Year : 2018  |  Volume : 19  |  Issue : 2  |  Page : 54-57

Clinical significance of elevated high-sensitivity troponin T in low likelihood acute coronary syndrome patients


1 Department of Emergency Medicine, Royal Oman Police Hospital, Muscat, Oman
2 Department of Cardiology, National Heart Center, Royal Hospital, Muscat, Oman

Correspondence Address:
Dr. Mamatha Punjee Rajarao
Department of Emergency Medicine, Royal Oman Police Hospital, Muscat
Oman
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/HEARTVIEWS.HEARTVIEWS_99_17

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High-sensitivity cardiac troponin T (hs-cTnT) is widely used in Oman and other Gulf countries. The availability of newer generation hs-cTnT has increased the sensitivity of diagnosing non-ST-elevation acute coronary syndrome (ACS). They utilize same antibodies as fourth-generation assay but can measure 10-fold lower levels of cTnT. Any detectable level above the 99th percentile of population suggests myocardial damage. However, the cause could be non-ACS. Therefore, the increase in sensitivity of hs-cTnT assays for ACS comes at the cost of a reduced ACS specificity because more patients with other causes of myocardial injury are detected than with previous cTnT assays. Hence, there is large confusion among emergency physicians regarding optimal cutoff values to definitely confirm non-ST-elevation ACS, especially in patients with low likelihood of ACS. This review summarizes the available clinical and biochemical data to make recommendations about hs-cTnT cutoff values which will guide physicians to take decision in patients presenting with low likelihood ACS.


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