Association of Intraoperative Renal Regional Oxygen Saturation and Acute Kidney Injury

This study is a prospective observational study of a single cohort of the patients who will undergo a scheduled living donor liver transplantation. The investigators attempt to evaluate the association of intraoperative renal regional oxygen saturation and acute kidney injury in patients undergoing living donor liver transplantation. Near-infrared spectroscopy sensor will be attached to the skin near bilateral kidney areas in all patients and renal regional oxygen saturation will be monitored during the operation. Renal regional oxygen saturation (rSO2) of the patients who developed acute kidney injury postoperatively will be compared with rSO2 of the patients who did not.