Table 1. Patients characteristics and univariate analysis of predictors for post-operative sepsis after flexible ureteroscopy.
| Variable | Sepsis (n=43) | Non-sepsis (n=716) | P value |
|---|---|---|---|
| Age (yr), mean (SD) | 52.7 (12.1) | 48.5 (13.3) | 0.043 |
| BMI (kg/m2), mean (SD) | 24.0 (3.2) | 24.3 (3.3) | 0.497 |
| Operation time (min), mean (SD) | 75.6 (25.9) | 71.7 (27.8) | 0.365 |
| Sex, n (%) | <0.001 | ||
| Male | 16 (3.2) | 483 (96.8) | |
| Female | 27 (10.4) | 233 (89.6) | |
| Stone height, n (%) | 0.202 | ||
| <10 mm | 15 (4.5) | 321 (95.5) | |
| ≥10 mm | 28 (6.6) | 395 (93.4) | |
| Stone laterality, n (%) | 0.083 | ||
| Left | 16 (7.1) | 364 (92.9) | |
| Right | 27 (4.2) | 352 (95.8) | |
| Indwelling stent, n (%) | 0.056 | ||
| Yes | 6 (12.0) | 44 (88.0) | |
| No | 37 (5.2) | 672 (94.8) | |
| Hydronephrosis, n (%) | 0.506 | ||
| Yes | 1 (2.2) | 44 (97.8) | |
| No | 42 (5.9) | 672 (94.1) | |
| Hypertension, n (%) | 0.485 | ||
| Yes | 11 (6.8) | 151 (93.2) | |
| No | 32 (5.4) | 565 (94.6) | |
| Coronary heart disease, n (%) | 1.000 | ||
| Yes | 0 (0) | 11 (100) | |
| No | 43 (5.7) | 705 (94.3) | |
| Diabetes, n (%) | 0.513 | ||
| Yes | 3 (4.8) | 60 (95.2) | |
| No | 40 (5.7) | 656 (94.3) | |
| Serum cholesterol, n (%) | 0.423 | ||
| <5.17 mmol/L | 38 (5.6) | 646 (94.4) | |
| ≥5.17 mmol/L | 5 (6.7) | 70 (93.3) | |
| Serum creatinine, n (%) | 0.670 | ||
| <133 μmol/L | 35 (5.5) | 601 (94.5) | |
| ≥133 μmol/L | 8 (6.5) | 115 (93.5) | |
| Albumin, n (%) | 0.001 | ||
| <35 g/L | 12 (15.6) | 65 (84.4) | |
| ≥35 g/L | 31 (4.5) | 651 (95.5) | |
| Globulin, n (%) | 0.002 | ||
| <30 g/L | 18 (3.7) | 465 (96.3) | |
| ≥30 g/L | 25 (9.1) | 251 (90.9) | |
| AGR, n (%) | <0.001 | ||
| <1.2 | 24 (15.1) | 135 (84.9) | |
| ≥1.2 | 19 (3.2) | 581 (96.8) | |
| Pre-operative fever, n (%) | 0.001 | ||
| Yes | 8 (21.1) | 30 (78.9) | |
| No | 35 (4.9) | 686 (95.1) | |
| WBC, n (%) | 0.005 | ||
| <10,000 cells/μL | 33 (4.8) | 654 (95.2) | |
| ≥10,000 cells/μL | 10 (13.9) | 62 (86.1) | |
| Urine culture, n (%) | <0.001 | ||
| Positive | 25 (34.2) | 48 (65.8) | |
| Negative | 18 (2.6) | 668 (97.4) | |
| Urine WBC, n (%) | <0.001 | ||
| Positive | 31 (9.1) | 309 (90.9) | |
| Negative | 12 (2.9) | 407 (97.1) | |
| Urine nitrite, n (%) | <0.001 | ||
| Positive | 13 (37.1) | 22 (62.9) | |
| Negative | 30 (4.1) | 694 (95.9) |
BMI, body mass index; SD, standard deviation; AGR, albumin globulin ratio; WBC, white blood cell.