Table 3.
Intraoperative data
| Variable | Participants (n = 40) |
|---|---|
| Side of treatment | |
| Right | 19 (48%) |
| Left | 21 (52%) |
| Dominant stone size (renal, mm) | |
| Median (IQR) | 7.5 (5.0, 10.5) |
| Mean (SD) | 7.5 (3.9) |
| Dominant stone size (ureteral, mm) | |
| Median (IQR) | 6.0 (5.0, 7.0) |
| Mean (SD) | 6.2 (2.2) |
| Dominant stone location* | |
| Renal | 20 (50%) |
| Ureter (proximal) | 7 (18%) |
| Ureter (distal) | 13 (33%) |
| Number of stones treated (renal) | |
| Median (IQR) | 2 (1, 4) |
| Mean (SD) | 5.6 (10.6) |
| Number of stones treated (ureteral) | |
| Median (IQR) | 1 (1, 2) |
| Mean (SD) | 1.3 (0.5) |
| Operative time (min) | |
| Median (IQR) | 51 (36, 80) |
| Mean (SD) | 59.1 (28.6) |
| Ureteroscopy time (min) | |
| Median (IQR) | 32.5 (20, 58.5) |
| Mean (SD) | 40.1 (26.3) |
| Ureteroscope type* | |
| Flexible | 24 (60%) |
| Semirigid | 7 (18%) |
| Both | 9 (23%) |
| Ureteral access sheath use | 19 (48%) |
| Basket extraction | 33 (82%) |
| Irrigation | |
| Manual | 20 (50%) |
| Constant pressure | 20 (50%) |
| Ureteral stent diameter | |
| 4.7 French | 6 (15%) |
| 6 French | 34 (85%) |
| Ureteral stent length* (cm) | |
| 22 | 1 (3%) |
| 24 | 18 (45%) |
| 26 | 14 (35%) |
| 28 | 5 (13%) |
| 30 | 2 (5%) |
| Stent dwell time (days) | |
| Median (IQR) | 8 (6.5, 11) |
| Mean (SD) | 10.1 (6.8) |
*Note: percentages may not sum to 100 due to rounding
Data shown are n (%) except where indicated
IQR = 25th, 75th percentiles; SD = standard deviation