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Table 3 Postoperative outcomes in the study groups

From: Relationship between a perioperative intravenous fluid administration strategy and acute kidney injury following off-pump coronary artery bypass surgery: an observational study

  Control group RPF group P value
Number of patients 554 229  
Acute kidney injury
 RIFLE 212 (38.3) 33 (14.4) <0.001
 AKIN 168 (30.3) 24 (10.5) <0.001
 KDIGO 210 (37.9) 33 (14.4) <0.001
KDIGO stage ≥2 63 (11.4) 8 (3.5) <0.001
Renal replacement therapy 12 (2.2) 2 (0.9) 0.345
Persistent acute kidney injury 59 (10.7) 4 (1.7) <0.001
Extubation time (h) 10.5 [7.5–16.0] 7.5 [5.5–12.3] <0.001
Intensive care unit stay (h) 47.0 [39.8–50.5] 47.0 [42.5–49.0] 0.695
Maximal SOFA-C score 3.0 [2.0–3.0] 3.0 [0–3.0] 0.181
Hospital stay (days) 8.0 [7.0–10.0] 7.0 [7.0–9.0] <0.001
In-hospital deaths 7 (1.3) 1 (0.4) 0.512
  1. RPF renal protective fluid management, RIFLE risk, injury, failure, loss, and end-stage kidney disease classification, AKIN Acute Kidney Injury Network classification, KDIGO Kidney Disease Improving Global Outcomes classification, SOFA-C cardiovascular sequential organ failure assessment in the first 24 h
  2. Data are expressed as number of patients (%) or median [interquartile range]