Circulating Secretoneurin Concentrations After Cardiac Surgery: Data From the FINNish Acute Kidney Injury Heart Study

Objectives: Secretoneurin is associated with cardiomyocyte Ca2+ handling and improves risk prediction in patients with acute myocardial dysfunction. Whether secretoneurin improves risk assessment on top of established cardiac biomarkers and European System for Cardiac Operative Risk Evaluation II in patients undergoing cardiac surgery is not known. Design: Prospective, observational, single-center sub-study of a multicenter study. Setting: Prospective observational study of survival in patients undergoing cardiac surgery. Patients: A total of 619 patients undergoing cardiac surgery. Interventions: Patients underwent either isolated coronary artery bypass graft surgery, single noncoronary artery bypass graft surgery, two procedures, or three or more procedures. Procedures other than coronary artery bypass graft were valve surgery, surgery on thoracic aorta, and other cardiac surgery. Measurements and Main Results: We measured preoperative and postoperative secretoneurin concentrations and adjusted for European System for Cardiac Operative Risk Evaluation II, N-terminal pro-B-type natriuretic peptide, and cardiac troponin T concentrations in multivariate analyses. During 961 days of follow-up, 59 patients died (9.5%). Secretoneurin concentrations were higher among nonsurvivors compared with survivors, both before (168 pmol/L [quartile 1–3, 147–206 pmol/L] vs 160 pmol/L [131–193 pmol/L]; p = 0.039) and after cardiac surgery (173 pmol/L [129–217 pmol/L] vs 143 pmol/L [111–173 pmol/L]; p

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