Table 1.
Patients’ characteristics. RIRS: retrograde intrarenal surgery. PCNL: percutaneous nephrolithotripsy. SWL: shock wave lithotripsy.
| DISS RIRS (n = 30) | SUAS RIRS (n = 28) | p-Value | |
|---|---|---|---|
| Age, years, median (25th–75th percentiles) | 46.0 (39.3–53.8) | 49.0 (37.0–61.0) | 0.360 |
| Gender, n (%) Female Male |
10 (33.3) 20 (66.7) |
13 (46.4) 15 (53.6) |
0.453 |
| History of lithiasis, n (%) First time Recurrence |
20 (66.7) 10 (33.3) |
20 (71.4) 8 (28.6) |
0.914 |
| Haematuria only at presentation, n (%) | 18 (60.0) | 1 (3.56) | <0.001 |
| Pain only at presentation, n (%) | 12 (40.0) | 6 (21.43) | <0.001 |
| Haematuria and pain at presentation, n (%) | 0 | 4 (14.28) | 0.104 |
| Fever at presentation, n (%) | 0 | 5 (17.86) | 0.051 |
| Elevated creatinine at presentation, n (%) | 1 (3.3) | 5 (17.9) | 0.167 |
| Tamsulosin pre, n (%) | 1 (3.3) | 22 (78.6) | <0.001 |
| Stone largest size, mm, median (25th–75th percentiles) | 22.0 (18.0–28.8) | 13.0 (11.8–15.0) | <0.001 |
| Hounsfield unit, median (25th–75th percentiles) | 1000 (544–1180) | 1020 (1000–1070) | 0.340 |
| Multiple stones, n (%) | 12 (40.0) | 0 | <0.001 |
| Stone location, upper pole, n (%) | 6 (20.0) | 6 (21.44) | 0.99 |
| Stone location, middle pole, n (%) | 24 (80.0) | 11 (39.28) | <0.001 |
| Stone location, lower pole, n (%) | 12 (40.0) | 11 (39.28) | 0.99 |
| Surgical time, minutes, median (25th–75th percentiles) | 80.0 (60.0–100) | 47.5 (41.5–60.3) | <0.001 |
| Hospital stay, days, median (25th–75th percentiles) | 1.00 (0.667–0.80) | 1.00 (1.00–2.00) | 0.002 |
| Residual fragments, n (%) Single residual fragments, n (%) Multiple residual fragments, n (%) |
10 (33.3) 2 (6.7) 8 (26.7) |
10 (35.7) 5 (17.9) 5 (17.9) |
0.99 |
| Complications, n (%) Fever Haematuria Sepsis |
11 (36.7) 0 0 |
7 (25.0) 2 (7.1) 0 |
0.4990.441 |
| Intervention for residual fragments, n (%) Observation RIRS PCNL SWL |
0 10 (33.3) 0 0 |
8 (28.6) 0 0 1 (3.6) |