Table 1.
Demographic, radiological and surgical parameters
| Demographic parameters | Total | Group 1 (UAS-) | Group 2 (UAS +) | Group 3 (DLUAS +) | P value |
|---|---|---|---|---|---|
| Age (mean ± SD) | 48.2 ± 13.8 | 50.5 ± 12.4 | 47.95 ± 15.2 | 46.35 ± 14.1 | 0.68 |
| Gender n (%) | 0.49 | ||||
| Male | 42 (70) | 13 (65) | 16 (80) | 13 (65) | |
| Female | 18 (30) | 7 (35) | 4 (20) | 7 (35) | |
| BMI (mean ± SD) | 29.06 ± 4.3 | 29.8 ± 3.5 | 28.6 ± 5.3 | 28.6 ± 4.1 | 0.46 |
| Comorbidity n (%) | 24 (40) | 8 (40) | 9 (45) | 7 (35) | 0.81 |
| DM | 8 (13.3) | 4 (20) | 1 (5) | 3 (15) | |
| HT | 5 (8.3) | 2 (10) | 3 (15) | 0 | |
| HT + DM | 5 (8.3) | 2 (10) | 1 (5) | 2 (10) | |
| Other | 6 (10) | 0 | 4 (20) | 2 (10) | |
| Drug use n (%) | 0.93 | ||||
| Yes | 7 (35) | 8 (40) | 8 (40) | 7 (35) | |
| No | 13 (65) | 12 (60) | 12 (60) | 13 (65) | |
| Anticoagulant n (%) | 0.15 | ||||
| Yes | 4 (6.7) | 0 | 3 (15) | 1 (5) | |
| No | 56 (93.3) | 20 (100) | 17 (85) | 19 (95) | |
| Previous Stone surgery n (%) | 0.80 | ||||
| Yes | 21 (35) | 7 (35) | 6 (30) | 8 (40) | |
| No | 39 (65) | 13 (65) | 14 (70) | 12 (60) | |
| Stone related parameters | |||||
| Stone size (mm) (mean ± SD) | 14.08 ± 5.4 | 14.95 ± 6.5 | 14.65 ± 5.6 | 12.65 ± 3.6 | 0.48 |
| Stone density (HU) (mean ± SD) | 950 ± 289 | 1002 ± 331 | 919 ± 263 | 929 ± 278 | 0.57 |
| Stone side n (%) | 0.41 | ||||
| Right | 39 (65) | 9 (45) | 5 (25) | 7 (35) | |
| Left | 21 (35) | 11 (55) | 15 (75) | 13 (65) | |
| Stone localization n (%) | 0.89 | ||||
| Upper pole | 5 (8.3) | 2 (10) | 1 (5) | 2 (10) | |
| Mid pole | 12 (20) | 3 (15) | 5 (25) | 4 (20) | |
| Lower pole | 14 (23.3) | 5 (25) | 6 (30) | 3 (15) | |
| Renal pelvis | 12 (20) | 5 (25) | 2 (10) | 5 (25) | |
| Multiple | 17 (28.3) | 5 (25) | 6 (30) | 6 (30) | |
| Lower pole infindubulopelvic angle (°) (mean) | 51.6 (32–90) | 49.05(35–85) | 52.05 (32–90) | 53.95 (32–78) | 0.44 |
| Surgery related parameters | |||||
| Fluoroscopy time (sec) (mean ± SD) | 40.7 ± 22.6 | 41.4 ± 26.4 | 41.2 ± 24.6 | 39.6 ± 17.1 | 0.98 |
| Operation time (min) (mean ± SD) | 62.8 ± 16.5 | 65 ± 14.9 | 63 ± 19.9 | 60.5 ± 14.7 | 0.55 |
| Length of stay in hospital (day) (mean ± SD) | 1.62 ± 1.53 | 1.75 ± 1.83 | 1.55 ± 1.39 | 1.55 ± 1.39 | 0.99 |
| Stone free rate n (%) | 54 (90) | 17 (85) | 19 (95) | 18 (90) | 0.57 |
| DJ stent insertion n (%) | 0.59 | ||||
| Yes | 58 (96.6) | 19 (95) | 20 (100) | 19 (95) | |
| No | 2 (3.4) | 1 (5) | 0 | 1 (5) | |
| PULS grade n (%) | 0.84 | ||||
| 0 | 43 (71.7) | 15 (75) | 13 (65) | 15 (75) | |
| 1 | 12 (20) | 4 (20) | 4 (20) | 4 (20) | |
| 2 | 4 (6.7) | 1 (5) | 2 (10) | 1 (5) | |
| 3 | 1 (1.7) | 0 | 1 (5) | 0 | |
| 4–5 | 0 | 0 | 0 | 0 | |
| Postoperative complication (modified Clavien classification) n (%) | 0.19 | ||||
| 0 | 54 (90) | 18 (90) | 18 (90) | 18 (90) | |
| 1 | 4 (6.7) | 2 (10) | 0 | 2 (10) | |
| 2 | 2 (3.3) | 0 | 2 (10) | 0 | |
| 3–4–5 | 0 | 0 | 0 | 0 | |
| Postoperative fever n (%) | 0.25 | ||||
| Yes | 5 (%8.3) | 2 (%10) | 2 (%10) | 1 (%5) | |
| No | 55 (%91.7) | 18 (%90) | 18 (%90) | 19 (%95) | |
| Preoperative serum creatinin level (mg/dl) | 0.87±0.22 | 0.84±0.20 | 0.89±0.22 | 0.82±0.20 | 0.77 |
| Postoperative 4th hour serum creatinin level (mg/dl) | 0.91±0.23 | 0.93±0.22 | 0.98±0.25 | 0.87±0.17 | 0.79 |
| Postoperative 14th day serum creatinin level (mg/dl) | 0.85±0.18 | 0.89±0.27 | 0.90±0.24 | 0.85±0.19 | 0.65 |