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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