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Table 1 Median daily cumulative fluid balance and serum creatinine (crude and fluid adjusted) in all patients

From: Fluid accumulation, recognition and staging of acute kidney injury in critically-ill patients

Median (IQR) Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7
Cumulative FB (L) 1.0 (-0.1-3.2) 2.7 (0.5-6.2) 3.7 (1.1-8.6) 4.9 (1.7-10.3) 5.6 (2.5-12.0) 6 (1.9-13.1) 6.5 (1.1-11.3)
Crude sCr
(mg/dL)
1.60 (1.2-2.2) 2.10 (1.5-2.8) 2.80 (2.1-3.7) 3.30 (2.6-4.6) 3.80 (2.9-5.5) 3.90 (2.9-5.5) 3.90 (2.8-5.6)
FB adjusted sCr
(mg/dL)
1.69 (1.2-2.3) 2.24 (1.6-3.1) 2.99 (2.3-4.2) 3.79 (2.8-5.2) 4.29 (3.2-6.3) 4.44 (3.4-6.3) 4.55 (3.4-6.6)
% Underestimation 2.1 (0-6.5) 5.4 (0.9-13.1) 8.3 (2.18-17.9) 10.5 (3.2-21.8) 13.4 (4.8-25.8) 14.3 (4.6-27.9) 13.6 (2.8-26.9)
  1. FB: fluid balance; IQR: interquartile range; sCr: serum creatinine.
  2. For conversion of creatinine expressed in conventional units to standard units, multiply by 88.4.
  3. % Daily underestimation = (Adjusted sCr - crude sCr for the day) crude sCr for the day × 100