RT Journal Article T1 Perioperative hemoglobin area under the curve is an independent predictor of renal failure after cardiac surgery. Results from a Spanish multicenter retrospective cohort study. A1 Duque-Sosa, Paula A1 Martínez-Urbistondo, Diego A1 Echarri, Gemma A1 Callejas, Raquel A1 Iribarren, María Josefa A1 Rábago, Gregorio A1 Monedero, Pablo A1 Spanish group of renal dysfunction in cardiac surgery (GEDRCC-2), AB Perioperative anemia is an important risk factor for cardiac surgery-associated acute kidney injury (CSA-AKI). Nonetheless, the severity of the anemia and the time in the perioperative period in which the hemoglobin level should be considered as a risk factor is conflicting. The present study introduces the concept of perioperative hemoglobin area under the curve (pHb-AUC) as a surrogate marker of the evolution of perioperative hemoglobin concentration. Through a retrospective analysis of prospectively collected data, we assessed this new variable as a risk factor for the development of acute kidney injury after cardiac surgery in 966 adult patients who underwent cardiac surgery with cardiopulmonary bypass, at twenty-three academic hospitals in Spain. Exclusion criteria were patients on renal replacement therapy, who needed a reoperation because of bleeding and/or with missing perioperative hemoglobin or creatinine values. Using a multivariate regression analysis, we found that a pHb-AUC YR 2017 FD 2017-02-22 LK https://hdl.handle.net/10668/25301 UL https://hdl.handle.net/10668/25301 LA en DS RISalud RD Apr 6, 2025