Table 1.
Patient characteristics, preoperative laboratory values and stone characteristics
| Variables | All patients (n = 517) |
SIRS ( ± ) (n = 461) |
SIRS (+) (n = 56) |
p value | Sepsis (−) (n = 509) |
Sepsis (+) (n = 8) |
p value |
|---|---|---|---|---|---|---|---|
| Patient characteristics | |||||||
| Age (years) (mean ± SD) | 48.13 ± 13.92 | 47.5 ± 13.8 | 46.5 ± 14.5 | 0.6 | 47.4 ± 13.9 | 45 ± 13.3 | 0.6 |
| Gender | |||||||
| Female | 127 (24.6%) | 112 (88.2%) | 15 (11.8%) | 0.68 | 126 (99.2%) | 1 (0.8%) | 0.42 |
| Male | 390 (75.4%) | 349 (89.5%) | 41 (10.5%) | 383 (98.2%) | 7 (1.8%) | ||
| BMI (kg/m2) | 25.23 ± 2.94 | 25.2 ± 2.93 | 25.3 ± 2.9 | 0.7 | 25.1 ± 2.9 | 27.3 ± 1.9 | 0.03* |
| Hypertension | 145 (27.9%) | 120 (26%) | 14 (25%) | 1.0 | 132 (26%) | 2 (25%) | 1.0 |
| Diabetes mellitus | 96 (18.5%) | 82 (17.8%) | 12 (21.4%) | 0.4 | 90 (17.7%) | 4 (50%) | 0.04 |
| History of previous ipsilateral PCNL (%) | 23 (4.4%) | 19 (4.1%) | 4 (7.1%) | 0.3 | 23 (4.5%) | 0 | 1.0 |
| Preoperative laboratory values | |||||||
| Hemoglobin (gm/dl) | 13.29 ± 1.91 | 13.4 ± 1.8 | 12.8 ± 2.3 | 0.04* | 13.3 ± 1.9 | 12.9 ± 2.5 | 0.6 |
| TLC (/mm3) | 8.73 ± 3.84 | 8.6 ± 2.6 | 10.4 ± 3.5 | 0.000002* | 8.8 ± 2.8 | 9.5 ± 2.3 | 0.4 |
| Creatinine (mg/dl) | 1.42 ± 4.30 | 1.4 ± 4.5 | 1.2 ± 0.7 | 0.75 | 1.4 ± 4.3 | 1.03 ± 0.3 | 0.8 |
| NLR | 2.6 ± 2.1 | 2.5 ± 1.04 | 3.6 ± 2.4 | 0.0000001* | 2.6 ± 2.1 | 3.9 ± 5.7 | 0.2 |
| PLR | 118.3 ± 69.5 | 115.4 ± 68.9 | 129.3 ± 53.8 | 0.005* | 118.2 ± 69.7 | 143.2 ± 70.03 | 0.6 |
| LMR | 2.6 ± 1.7 | 3.2 ± 1.8 | 2.6 ± 1.7 | 0.006* | 4.07 ± 2.8 | 2.5 ± 1.7 | 0.02* |
| Stone characteristics | |||||||
|
Stone volume (mm3) [median (Q1-Q3)] |
880.95 (524.38–1801.25) | 825 (503–1573) | 890 (529–3089) | 0.3 | 839 (515–1641) | 849 (616–1090) | 0.9 |
| Hounsfield unit (HU) | 970.59 ± 278.55 | 986 ± 253.1 | 1017 ± 294.4 | 0.39 | 753 ± 407 | 993 ± 253 | 0.009* |
| Staghorn (%) | 4.06 | 3.24 | 12.8 | 0.008* | 4.12 | 0 | 1.0 |
|
Stone location (%) | |||||||
| Simple | 87.8 | 88.1 | 85.7 | 0.6 | 87.6 | 100 | 0.6 |
| Complex | 12.2 | 11.9 | 14.3 | 12.4 | 0 | ||
| Intraoperative characteristics | |||||||
| Puncture site (%) | |||||||
| Supracostal (n = 75) | 14.7 | 13.9 | 19.6 | 0.2 | 14.5 | 12.5 | 1.0 |
| Infracostal (n = 442) | 85.3 | 86.1 | 80.4 | 85.5 | 87.5 | ||
| Tract size [median (Q1-Q3)] | 28 (26–32) | 28 (26–32) | 28 (26–32) | 0.2 | 28 (26–32) | 28 (15–32) | 0.8 |
| Bilateral puncture (%) | 4.6 | 4.3 | 7.1 | 0.3 | 4.6 | 0 | 1.0 |
| Tract number (%) | |||||||
| Single puncture | 97.6 | 97.4 | 100 | 0.3 | 97.6 | 100 | 1.0 |
| > 1 puncture | 2.35 | 2.6 | 0 | 2.4 | 0 | ||
| Blood transfusion (%) | 2.9 | 2.6 | 7.1 | 0.08 | 2.9 | 12.5 | 0.2 |
| Operative time (minutes) | 55.99 ± 16.71 | 55.2 ± 16.02 | 59.6 ± 14.01 | 0.05* | 55.7 ± 15.8 | 55 ± 17.3 | 0.8 |
| LOH (days) | 2.34 ± 1.78 | 2.22 ± 1.75 | 3.30 ± 1.71 | 0.00003* | 2.34 ± 1.78 | 3.34 ± 1.69 | 0.001* |
*Values are statistically significant