Acute kidney injury (AKI) is a common complication in patients with congenital heart defects after cardiopulmonary bypass (DentC.L.,MaQ., 2007, PedersenK.R., HjortdalV.E., 2008, Zappitelli M., BernierP .L., 2009). The death rate from AKI in critically ill children remains high and reaches 60% (FlynnJ.T., 2002).