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
2018
Abstract Background Primary percutaneous coronary intervention (pPCI) is recommended in patients presenting with ST-elevation myocardial infarction (STEMI) within 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 (R 2 = 0.02, p = .04), FIS (R 2 = 0.03, p 2 = 0.04, p 2 = 0.19, p 2 = 0.02, p = .19), FIS (R 2 = 0.02, p = .12), or MSI (R 2 = 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.
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