Table 1.
Descriptive characteristics of study population (n = 431).
| Total | Survived, n = 289 (67.1%) | Died, n = 142 (32.9%) | P value | |
|---|---|---|---|---|
| Age | ||||
| 65–80 years | 348 (80.7%) | 231 (79.9%) | 117 (82.4%) | 0.61 |
| >80 years | 83 (19.3%) | 58 (20.1%) | 25 (17.6%) | |
| Length of stay, days, median [IQR] | 4 [2–8] | |||
| Diabetes | 133 (30.9%) | 94 (70.7%) | 39 (29.3%) | 0.32 |
| Hypertension | 228 (55.9%) | 163 (71.5%) | 65 (28.5%) | 0.055 |
| Admission Cr, median [IQR] | 2.1 [1.4–3.1] | 2.2 [1.5–3.3] | 2 [1.2–2.8] | 0.02∗ |
| Peak Cr | 2.8 [2.1–4.1] | 2.7 [2–4] | 3 [2.2–4.1] | 0.054∗ |
| Discharge Cr | 1.8 [1.3–2.9] | 1.5 [1.1–2.2] | 2.7 [1.8–3.6] | <0.001∗ |
| pH | 7.3 ± 0.29 | 7.3 ± 0.36 | 7.3 ± 0.13 | 0.99 |
| O2 | 81.6 ± 21.7 | 81.6 ± 21.2 | 81.5 ± 22.7 | 0.98 |
| pCO₂ | 34 ± 15.2 | 33.9 ± 15.2 | 15.3 ± 1.6 | 0.95 |
| Albumin, n = 280 | ||||
| <3.5 | 260 (92.9%) | 162 (91.5%) | 98 (95.1%) | 0.33 |
| >3.5 | 20 (7.1%) | 15 (8.5%) | 5 (4.9%) | |
| HCO3, n = 224 | ||||
| <21 | 156 (69.6) | 92 (68.1) | 64 (71.9) | 0.65 |
| >21 | 68 (30.4) | 43 (31.9) | 25 (28.1) | |
| HCO3, median [IQR] | 18 [13–23] | 18 [15–23] | 17 [12–22] | 0.12∗ |
| Need for dialysis | 20 (4.5) | 11 (3.7) | 9 (6.2) | 0.23 |
| Ventilation | 32 (7.2) | 15 (5) | 17 (11.6) | 0.01 |
| Vasopressor | 56 (12.6) | 15 (5) | 41 (28.1) | <0.001 |
| Stay in ICU | 25 (5.6) | 10 (3.3) | 15 (10.3) | 0.004 |
| Oliguria | 63 (14.2) | 31 (10.4) | 32 (21.9) | 0.001 |
| AKI stage 1 | 341 (79.1%) | 241 (70.7%) | 100 (29.3%) | NS |
| AKI stage 2 | 56 (13%) | 31 (55.4%) | 25 (44.6%) | NS |
| AKI stage 3 | 34 (7.9%) | 17 (50%) | 17 (50%) | NS |
|
| ||||
| Outcome | ||||
| Survived | 299 (67.1) | |||
| Died | 146 (32.9) | |||