Impact of leading presenting symptoms on the diagnostic performance of high-sensitivity cardiac troponin T and on outcomes in patients with suspected acute coronary syndrome
BACKGROUND: Diagnostic performance of high-sensitivity cardiac troponin T (hs-cTnT) varies depending on presenting symptoms in patients with suspected acute coronary syndrome (ACS). METHODS: We compared performance measures of hs-cTnT among patients admitted to the emergency department with typical...
Gespeichert in:
| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
3 February 2015
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| In: |
Clinical chemistry
Year: 2015, Jahrgang: 61, Heft: 5, Pages: 744-751 |
| ISSN: | 1530-8561 |
| DOI: | 10.1373/clinchem.2014.235317 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1373/clinchem.2014.235317 Verlag, kostenfrei, Volltext: http://clinchem.aaccjnls.org/content/61/5/744 
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| Verfasserangaben: | Moritz Biener, Matthias Mueller, Mehrshad Vafaie, Hugo A. Katus, Evangelos Giannitsis |
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| 245 | 1 | 0 | |a Impact of leading presenting symptoms on the diagnostic performance of high-sensitivity cardiac troponin T and on outcomes in patients with suspected acute coronary syndrome |c Moritz Biener, Matthias Mueller, Mehrshad Vafaie, Hugo A. Katus, Evangelos Giannitsis |
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| 520 | |a BACKGROUND: Diagnostic performance of high-sensitivity cardiac troponin T (hs-cTnT) varies depending on presenting symptoms in patients with suspected acute coronary syndrome (ACS). METHODS: We compared performance measures of hs-cTnT among patients admitted to the emergency department with typical chest pain (angina), dyspnea, and atypical symptoms and assessed outcomes by leading presenting symptoms. RESULTS: A total of 658 patients suspected of ACS and presenting with typical chest pain (n = 241, 36.6%), dyspnea (n = 142, 21.6%), or atypical symptoms (n = 275, 41.8%) were included. Diagnostic accuracy of hs-cTnT on admission was higher among patients with typical chest pain compared to those with atypical symptoms [area under the curve (AUC) 0.823 vs AUC 0.776 vs AUC 0.705, P > 0.05 and P = 0.04]. Absolute concentration changes within 6 h improved accuracy among all subgroups, with the smallest added benefit in typical chest pain and dyspnea (ΔAUC, 0.078; P = 0.02 and 0.05, P > 0.05). During 1-year follow-up, dyspnea was associated with a higher risk of death (hazard ratio, 2.36; 95% CI, 1.26-4.43, P = 0.008) and death/AMI (hazard ratio, 2.23; 95% CI, 1.21-4.11, P = 0.01) compared to typical chest pain. Optimal discriminating values for hs-cTnT were higher among patients presenting with dyspnea compared to those with typical chest pain (91.2 vs 14.1 ng/L, P < 0.001). CONCLUSION: The diagnostic performance of hs-cTnT in patients with suspected ACS depends on the leading presenting symptom. Patients admitted with dyspnea represent a high-risk cohort in which the diagnosis of ACS is less frequent and with inferior performance of serial hs-cTnT measurements. Higher hs-cTnT cutoffs at baseline and absolute changes after 6 h help to identify non-STEMI (ST segment elevation myocardial infarction) in this population. | ||
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