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Table 2 Characteristics of patients with acute kidney injury, by outcome

From: Fluid balance and mortality in critically ill patients with acute kidney injury: a multicenter prospective epidemiological study

Characteristics

AKI (n = 1172)

Survivors (n = 871)

Non-survivors (n = 301)

P value

Male sex

742 (63.3)

548 (62.9)

194 (64.5)

0.677

Age (yr)

67 (54–78)

64 (52–77)

74 (60–82)

<0.001

ICU admission

    

APACHE II score

17 (12–23)

15 (11–21)

23 (17–29)

<0.001

SAPS II score

40 (31–52)

37 (28–47)

52 (41–64)

<0.001

SOFA score

7 (5–10)

7 (4–10)

9 (7–12)

<0.001

Vasoactive therapy

576 (49.1)

419 (48.1)

157 (52.2)

0.229

Mechanical ventilation

818 (69.8)

614 (70.5)

204 (67.8)

0.383

Baseline creatinine (μmol/L)

84.9 (73.0–97.0)

84.0 (72.1–97.0)

86.9 (75.0–97.8)

0.78

Sepsis

512 (43.7)

309 (35.5)

203 (67.4)

<0.001

Comorbid diseases

    

 Cancer

164 (14.0)

112 (12.9)

52 (17.2)

0.067

 Hypertension

523 (44.6)

379 (43.5)

144 (47.8)

0.202

 Cardiovascular

274 (23.4)

177 (20.3)

97 (32.2)

<0.001

 Chronic kidney disease

111 (9.5)

79 (9.1)

32 (10.6)

0.493

    Diabetes

240 (20.5)

173 (19.9)

67 (22.2)

0.407

Category of ICU admission diagnosis

 Respiratory

208 (17.7)

125 (14.4)

83 (27.6)

<0.001

 Neurologic

178 (15.2)

134 (15.4)

44 (14.6)

0.781

 Postsurgery

556 (47.4)

443 (50.8)

113 (37.5)

<0.001

 Cardiovascular

233 (19.9)

170 (19.5)

63 (20.9)

0.615

ICU course

    

 Cumulative fluid balance in 3 days (L)

1.40 (−0.49 to 3.54)

0.93 (−0.80 to 2.93)

2.77 (0.86–5.01)

<0.001

 Oliguria

96 (8.2)

46 (5.3)

50 (16.6)

<0.001

 Use of diuretics (%)

872 (74.4)

635 (72.9)

237 (78.7)

0.047

Outcomes

    

 AKI stage

    

 1

496 (42.3)

424 (48.7)

72 (23.9)

 

 2

289 (24.7)

215 (24.7)

74 (24.6)

<0.001

 3

387 (33.0)

232 (26.6)

155 (51.5)

 

 RRT

222 (18.9)

125 (14.4)

97 (32.2)

<0.001

 Length of ICU stay (days)

7 (5–14)

7 (4–13)

8 (6–14)

0.001

  1. Data are expressed as median (interquartile range) or number (percent)
  2. AKI acute kidney injury, SAPS II Simplified Acute Physiology Score II, SOFA Sequential Organ Failure Assessment, APACHE II Acute Physiology and Chronic Health Evaluation II, RRT renal replacement therapy