Amino Acids for Cardiac Surgery Associated AKI

The participants receive a continuous infusion of a balanced mixture of amino acids (Trophamine) in a dose of 2g/kg/day (max 100g/day) starting at the time of cardiac surgery up to 3 days

The participants receive a continuous infusion of a lactated ringers (placebo), equivalent volume to amino acids, starting at the time of cardiac surgery up to 3 days