Table 3 Baseline characteristics and mortalities according to stages of postoperative acute kidney injury (AKI).
AKI stage 1 (N = 53) | AKI stage 2 (N = 6) | p-value | |
|---|---|---|---|
Age, years | 62.0 (54.0–70.0) | 56.0 (47.0–62.0) | 0.19 |
Male | 38 (71.7) | 3 (50.0) | 0.53 |
Smoking | 11 (20.8) | 1 (16.7) | 0.11 |
Alcohol | 13 (24.5) | 3 (50.0) | 0.55 |
Hypertension | 10 (18.9) | 2 (33.3) | 0.33 |
Charlson comorbidity index | 1.93 (± 2.67) | 2.00 (± 3.52) | 0.95 |
Myocardial infarction | 3 (5.7) | 0 | N/A |
Heart failure | 2 (3.8) | 0 | N/A |
Peripheral vascular disease | 0 | 0 | N/A |
Cerebrovascular disease | 6 (11.3) | 1 (16.7) | > 0.99 |
Dementia | 0 | 0 | N/A |
Chronic pulmonary disease | 0 | 0 | N/A |
Rheumatic disease | 1 (1.9) | 0 | N/A |
Peptic ulcer disease | 0 | 0 | N/A |
Mild liver disease | 6 (11.3) | 1 (16.7) | > 0.99 |
Diabetes without complication | 13 (24.5) | 2 (33.3) | > 0.99 |
Diabetes with complication | 11 (20.8) | 0 | N/A |
Hemiplegia | 2 (3.8) | 0 | N/A |
Renal disease | 16 (30.2) | 0 | N/A |
Any malignancy | 0 | 0 | N/A |
Moderate to severe liver disease | 0 | 1 (16.7) | 0.18 |
Metastatic solid tumor | 0 | 0 | N/A |
Human immunodeficiency virus | 0 | 0 | N/A |
Preoperative blood test | |||
Hemoglobin, g/dL | 12.6 (± 1.7) | 13.5 (± 1.3) | 0.2 |
Creatinine, mg/dL | 2.58 (± 2.56) | 0.68 (± 0.15) | 0.11 |
Operative variables | |||
Duration, hours | 1.2 (0.5–3.9) | 1.3 (0.6–2.3) | 0.95 |
General anesthesia | 32 (60.4) | 5 (83.3) | 0.51 |
Emergency surgery | 9 (17.0) | 0 | N/A |
Type | |||
Head and neck | 12 (22.6) | 0 | |
Trunk and extremities | 10 (18.9) | 1 (16.7) | |
Breast | 21 (39.6) | 4 (66.7) | |
Aesthetic surgery | 2 (3.8) | 0 | |
Mass excision | 8 (15.1) | 1 (16.7) | |
Mortalities | |||
One-year mortality | 11 (20.8) | 0 | 0.49 |
Overall mortality | 16 (30.2) | 1 (16.7) | 0.83 |
30-day mortality | 6 (11.3) | 0 | 0.88 |
