Role of Mitochondrial Dysfunction in the Occurrence of Acute Kidney Injury (AKI) in Postoperative Cardiac Surgery

Mitochondrial function will be studied on cardiac tissue collected intraoperatively at the time of placement of the ECC cannulas by the surgeon. Fragments from auricle dissection of the right atrium of the patient will be requalified as sample residues, and will be used immediately by the surgeon to measure mitochondrial respiration (measurement of oxygen consumption by oxygenation and permeability test of the external mitochondrial membrane by the addition of cytochrome C in the oxygen chamber).