Table 3 Postoperative Variables by Status of AKIa.

From: The Incidence, Risk Factors and Outcomes of Postoperative Acute Kidney Injury in Neurosurgical Critically Ill Patients

Variables

All patients (n = 624)

Non-AKI (n = 540)

AKI (n = 84)

P value

APACHE II score

8 (7, 11)

8 (7, 11)

11 (8, 15)

<0.001

GCS score

15 (15, 15)

15 (15, 15)

15 (13, 15)

<0.001

Serum Cr, mg/dl

0.75 (0.63, 0.92)

0.74 (0.63, 0.91)

0.81 (0.65, 1.00)

0.037

Serum CysC, mg/L

0.73 (0.62, 0.87)

0.73 (0.61, 0.86)

0.81 (0.67, 1.03)

<0.001

Hemoglobin, g/L

114.48 ± 0.74

115.29 ± 0.80

109.27 ± 1.86

0.005

UP, ml/kg/h

2.2 (1.6, 2.9)

2.2 (1.6, 2.8)

2.4 (1.7, 3.4)

0.102

Postoperative reoperation, n (%)

12 (1.9)

6 (1.1)

6 (7.1)

0.002

  1. aContinuous variables were expressed as mean ± SD or median (25th percentile–75th percentile, IQR). Categorical variables were expressed as a number (%). Abbreviations: AKI, acute kidney injury; APACHE II, Acute Physiology and Chronic Health Evaluation; GCS, Glasgow Coma Score; Cr, creatinine, CysC, Cystatin C; UP, urine production within the first 24 hours after operation; Postoperative reoperation, underwent the second neurosurgical operation within 7 days after first neurosurgical procedure.
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