Acute Kidney Injury after Major Abdominal Surgery: A Retrospective Cohort Analysis
Table 5
Univariate and multivariate analysis to determine predictors of in-hospital mortality.
Variable
Unadjusted OR (95% CI)
Adjusted OR (95% CI)
Preoperative characteristics
Age (per year)
1.1 (1.06–1.2)
<0.0001
1.07 (1.02–1.1)
0.014
Male
1.1 (0.5–2.2)
0.887
Caucasian
1.3 (1.2–9.7)
0.831
Solid malignancy
1.5 (0.7–3.2)
0.287
ASA physical status IV/V
15.4 (6.7–35.6)
<0.0001
9.1 (2.9–27.5)
<0.0001
Nonrenal RCRI (per point)
2.6 (1.5–4.3)
<0.0001
1.6 (0.8–3.2)
0.213
Preoperative hemoglobin (per g/dL)
0.63 (0.5–0.8)
<0.0001
0.9 (0.6–1.2)
0.501
Preoperative SCr (per mg/dL)
2.3 (1.3–3.9)
0.003
0.6 (0.3–1.4)
0.268
Urgency surgery
4.2 (1.9–8.9)
<0.0001
1.9 (0.6–6.3)
0.320
Type of surgery
Colorectal
1.3 (0.6–2.7)
0.516
Gastric
0.7 (0.2–1.9)
0.471
Hepatobiliary and pancreatic1
0.2 (0.03–1.5)
0.116
Small bowel
0.8 (0.1–6.2)
0.800
Esophageal
3.4 (0.7–16.5)
0.130
Other surgery
1.8 (0.7–5)
0.242
Nonrenal SAPS II (per point)
1.13 (1.09–1.2)
<0.0001
1.08 (1.04–1.1)
<0.0001
Fluid balance (per liter)2
0.9 (0.8–1.1)
0.918
Postoperative AKI
11.2 (4.8–26.2)
<0.0001
3.7 (1.2–11.7)
0.024
OR: odds ratio. CI: confidence interval. ASA: American Society of Anesthesiologists. RCRI: Revised Cardiac Risk Index. SCr: serum creatinine. SAPS II: Simplified Acute Physiology Score, version II. AKI: acute kidney injury. 1Hepatobiliary and pancreatic surgery includes gallbladder surgery (), hepatic surgery (), pancreatic surgery (), and bile ducts surgery (). 2Fluid balance within the first two postoperative days.
