Figure 4From: Intraoperative renal near-infrared spectroscopy indicates developing acute kidney injury in infants undergoing cardiac surgery with cardiopulmonary bypass: a case–control study Renal near-infrared spectroscopy score in minute percent intraoperatively and 12, 24 and 48 hours postoperatively below the set baseline of regional oximetry <65% in infants with versus without acute kidney injury undergoing cardiopulmonary bypass operations. AKI, Acute kidney injury; NIRS, Near-infrared spectroscopy; p.o., Postoperatively.Back to article page