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Table 4 Intra- and postoperative renal near-infrared spectroscopy scores of infants with versus without acute kidney injury a

From: Intraoperative renal near-infrared spectroscopy indicates developing acute kidney injury in infants undergoing cardiac surgery with cardiopulmonary bypass: a case–control study

  AKI No AKI P -value
Renal NIRS <65% intraoperative (min%) 598 (86 to 2,532) 154 (0 to 2,997) 0.01*
Renal NIRS <65% 12 hr p.o. (min%) 694 (0 to 11,534) 26 (0 to 3,124) 0.02*
Renal NIRS <65% 24 hr p.o. (min%) 3,747 (0 to 22,590) 267 (1 to 9,417) 0.007*
Renal NIRS <65% 48 hr p.o. (min%) 1,113 (0 to 21,740) 150 (0 to 8,153) 0.04*
Renal NIRS ∆25% intraoperative (min%) 131 (0 to 1,200) 0 (0 to 2,263) 0.001*
Renal NIRS ∆25% 12 hr p.o. (min%) 4 (0 to 7,091) 0 (0 to 1,772) 0.04*
Renal NIRS ∆25% 24 hr p.o. (min%) 214 (0 to 13,267) 4 (0 to 312) 0.02*
Renal NIRS ∆25% 48 hr p.o. (min%) 25 (0 to 6,935) 0 (0 to 3,518) 0.1
  1. aThe renal near-infrared spectroscopy (NIRS) decrease below the baseline of 65% and the decrease of 25% below the individualized preoperative renal NIRS intraoperatively and 12, 24 and 48 hours postoperatively are expressed as median and range. AKI, Acute kidney injury; p.o., Postoperatively. *P < 0.05 indicates statistically significant values.