Abstract
Patients with non-ST-elevation acute coronary syndrome (NSTE-ACS) consists of a heterogenic population and improvement in identification of a specific risk profile is needed. In this study we aimed to obtain better insight in the role of different biomarkers for patients undergoing a routine invasive diagnostic strategy within 24 hours after admission. An Immediate or Early Invasive Strategy in Non-ST-Elevation Acute Coronary Syndrome (OPTIMA-2) study was a randomized controlled prospective open-label multicentre trial, randomizing NSTE-ACS patients. An invasive strategy was either immediate ( 3 hours) or early (12-24 hours). Peak high-sensitive TroponinT (hsTropT) value was determined within the first 48 hours of admission. N-terminal proB-type natriuretic peptide (NTpro-BNP) and high-sensitivity C-reactive protein (hsCRP) values were determined at admission and at discharge. These biomarkers were then divided into tertiles and related to clinical outcomes up to one year. The relation between these biomarkers and myocardial function recovery established by echocardiography was analyzed as a secondary endpoint. The OPTIMA-2 study included 249 patients. Overall, there was no significant increase in the risk of developing an adverse cardiovascular event in the first year if biomarker tertiles at admission were compared. However, mean NT-proBNP levels at admission were higher for patients that experienced all-cause death withing the first year (1.93 0.49 vs 1.42 0.58, p = 0.05). Also, peak hs-cTnT (232.0 2846.0 vs 71.5 1152.0, p = 0.06) values at baseline were higher in patients experiencing a myocardial infarction within 1-year. NT-proBNP levels at admission and at discharge correlated with recovery of the left ventricular (LV) function at 30 days (coefficient 0.021 (95% CI = 0.009-0.033) and coefficient 0.016 (95% CI = 0.005-0.027)). In NSTE-ACS patients treated by an early invasive strategy and administration of modern anticoagulant and antiplatelet therapy, multiple biomarker measurements during admission could not predict the occurrence of recurrent cardiovascular events within the first year of follow-up.
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