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Table 1 Examples of AKI Burden calculations

From: Burden of acute kidney injury and 90-day mortality in critically ill patients

 

Stage

Day 1

Stage

Day 2

Stage

Day 3

Stage

Day 4

Stage

Day 5

Available data

Maximal score

Actual score

Burden

Pt.

UO - Cr

UO - Cr

UO - Cr

UO - Cr

UO - Cr

1

2

3

3

3

.

.

.

.

.

.

4

12

11

11/12 = 0.92

2

.

.

1

1

0

0

0

0

0

0

8

24

2

2/24 = 0.08

3

0

0

0

0

0

0

0

0

0

0

10

30

0

0/30 = 0

4

2

2

3

3

3

3

3

3

3

3

10

30

28

28/30 = 0.93

5

1

1

3

3

3

3

.

.

.

.

6

18

14

14/18 = 0.77

RRT*

  1. Abbreviations: Pt Patient, UO Urine Output, Cr Creatinine, RRT Renal replacement therapy. Maximal score = days multiplied by 3 (highest stage of AKI). *Although based on UO and Cr, the patient had maximal stage 2, as the patient received RRT, the burden for that day was maximal, so 6