Table 2.
Intraoperative and postoperative outcomes.
| Parameter | Value |
|---|---|
| Operative time, mean±SD, min | 34.5±18.3 |
| Failed semi-rigid ureteroscope, n (%) | 5 (9.6) |
| Ureteral stricture | 2 (3.8) |
| Excessive kink of the ureter | 3 (5.8) |
| Stone-free rate, n (%) | |
| Immediate after operation (Day 1–2) | 45 (95.7) |
| One month after operation (Day 30) | 47 (100.0) |
| Postoperative complication, n (%) | 9 (19.1) |
| Complication (Clavien-Dindo categorization), n (%) | |
| Hematuria (Clavien Grade I) | 8 (17.0) |
| Stone upward migration (Clavien Grade III) | 0 |
| Ureteral extravasation (Trexer Grade III) | 1 (2.1) |
| Postoperative hospitalization duration, mean±SD, day | 2.1±1.1 |
SD, standard deviation.
Note: among the 52 patients, the sheaths were successfully placed in 47 cases.