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Table 3 Postoperative Variables by acute kidney injury status

From: Mild increases in plasma creatinine after intermediate to high-risk abdominal surgery are associated with long-term renal injury

Variables

No AKI (N = 706)

AKI stage 1 (N = 81)

AKI stage 2–3 (N = 28)

P-value

Length of stay in hospital (days)

9 [6–14]

15 [9–28]

17 [9–28]

< 0.001

Creatinine max during the first POD#7 (mg/dl)

0.8 [0.7–1.0]

1.4 [1.2–1.7]

2.8 [1.8–3.8]

< 0.001

Creatinine at hospital discharge

0.7 [0.6–0.9]

1.0 [0.8–1.2]

1.1 [0.8–1.5]

< 0.001

Creatinine at long-term follow up

0.9 [0.7–1.0]

1.0 [0.9–1.2]

1.1 [0.9–1.4]

< 0.001

Measurement of long-term follow up creatinine (days after surgery)

360 [303–393]

354 [298–376]

353 [294–386]

0.2

Minor complications; N (%)

146 (21%)

36 (44%)

14 (50%)

< 0.001

Superficial wound infection

19 (2.7%)

3 (3.7%)

0 (0%)

 

Urinary infection

33 (4.7%)

10 (12%)

5 (18%)

 

Paralytic ileus

20 (2.8%)

4 (4.9%)

5 (18%)

 

Pneumonia

13 (1.8%)

1 (1.2%)

2 (7.1%)

 

Postoperative confusion

20 (2.8%)

4 (4.9%)

3 (11%)

 

Other infection

72 (10%)

20 (25%)

7 (25%)

 

Major complications; N (%)

101 (14)

27 (33)

11 (39)

< 0.001

Anastomotic leakage

19 (2.7%)

5 (6.2%)

2 (7.1%)

 

Peritonitis

4 (0.57%)

1 (1.2%)

1 (3.6%)

 

Sepsis

22 (3.1%)

13 (16%)

5 (18%)

 

Necrosis stoma

8 (1.1%)

1 (1.2%)

0 (0%)

 

Wound dehiscence

9 (1.3%)

2 (2.4%)

1 (3.6%)

 

Bleeding requiring a redo surgery

24 (3.4%)

7 (8.6%)

1 (3.5%)

 

Pulmonary embolism

5 (0.71%)

1 (1.2%)

0 (0%)

 

Pulmonary oedema

7 (0.99%)

1 (1.2%)

1 (3.6%)

 

Acute coronary syndrome

0 (0%)

1 (1.2%)

0 (0%)

 

Atrial fibrillation / arrhythmia

15 (2.1%)

4 (4.9%)

1 (3.6%)

 

Stroke

0 (0%)

0 (0%)

0 (0%)

 

Renal replacement therapy

0 (0%)

0 (0%)

0 (0%)

 

Reoperation

35 (4.9%)

10 (12%)

3 (11%)

 

30-day mortality

0 (0%)

0 (0%)

0 (0%)

 
  1. Values are medians [interquartiles rangees] or numbers (percentages %)