Can copeptin and troponin T ratio predict final infarct size and myocardial salvage index in patients with ST-elevation myocardial infarction: A sub-study of the DANAMI-3 trial

Ásthildur Árnadóttir*, Mikkel Schoos, Jacob Lønborg, Kiril Ahtarovski, Henning Kelbæk, Steffen Helqvist, Dan Høfsten, Peter Clemmensen, Thomas Engstrøm, Lars Nepper-Christensen, Niels Vejlstrup, Lars Køber, Kasper Iversen

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

Abstract

Background: Primary percutaneous coronary intervention (pPCI) is recommended in patients presenting with ST-elevation myocardial infarction (STEMI) within <12 h of symptom onset. However, patients-reported symptom duration is not always reliable. Cardiac specific troponin T (cTnT) and the endogenous stress marker copeptin have different temporal release patterns for myocardial infarction MI. We hypothesized that copeptin/troponin-ratio is associated to the duration of coronary occlusion and therefore inversely proportional to myocardial salvage. Method: Patients older than 18 years with first time STEMI referred to pPCI were eligible. cTnT and copeptin values were measured at admission. A cardiac magnetic resonance scanning (CMR) was done during the index admission for assessment of area at risk (AAR), and later 3 months to assess final infarct size (FIS). Myocardial salvage index (MSI) was calculated based on these measurements. Results: A total of 468 patients were included. The median time from patient-reported onset of symptoms to pPCI was 192 min (IQR 150 min - 290 min). At presentation 416 (89%) patients had hs-cTnT values above the 99th percentile, median hs-cTnT was 53 ng/l (IQR 24 ng/l-146 ng/l) and 318 (68%) patients had copeptin values above the 99th percentile (18.9 pmol/l), median copeptin was 50 pmol/l (IQR 14 pmol/l-131 pmol/l). Symptom duration showed a weak but significant association with AAR (R2 = 0.02, p =.04), FIS (R2 = 0.03, p <.01) and MSI (R2 = 0.04, p <.01). Copeptin/troponin-ratio was significantly associated with symptom duration (R2 = 0.19, p <.01), but not AAR (R2 = 0.02, p =.19), FIS (R2 = 0.02, p =.12), or MSI (R2 = 0.01, p =.25). Conclusion: Copeptin/troponin-ratio is associated with patient-reported symptom duration, but there was no association with area at risk, final infarct size or myocardial salvage index.

OriginalsprogEngelsk
Sider (fra-til)37-42
Antal sider6
TidsskriftClinical Biochemistry
Vol/bind59
DOI
StatusUdgivet - sep. 2018

Fingeraftryk

Udforsk hvilke forskningsemner 'Can copeptin and troponin T ratio predict final infarct size and myocardial salvage index in patients with ST-elevation myocardial infarction: A sub-study of the DANAMI-3 trial' indeholder.

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