Table 2.
Operative characteristics
| Number of patients | n=2183 |
|---|---|
| Number of cases in which the scope was used before this case, n (%) | |
| ≤2 | 1921 (88.0) |
| >2 up to 5 | 262 (12.0) |
| Scope size (Fr), n (%) | |
| ≥8 | 1386 (63.5) |
| 7.5 | 797 (36.5) |
| General anesthesia, n (%) | 2056 (94.2) |
| Ureteral access sheath, n (%) | 2138 (97.9) |
| Sterilization, n (%)* | |
| Flash sterilization | 1749 (90.2) |
| Plasma | 1171 (60.5) |
| Gas | 5 (0.3) |
| Peracetic acid | 392 (20.3) |
| ETO | 339 (17.5) |
| Scope testing results, n (%) | |
| Problem in mechanism noted before/during case, but continued and completed case | 163 (7.5) |
| Upward deflection affected | 35 (1.6) |
| Downward deflection affected | 142 (6.5) |
| Image quality affected on white balancing | 104 (4.7) |
| Working channel affected | 3 (0.13) |
| Scope changed during case, n (%) | 85 (3.9) |
| Image quality poor with flickering | 81 (3.7) |
| Deflection mechanism stopped | 25 (1.1) |
| Problems passing basket/laser in working channel | 12 (0.5) |
| Case abandoned due to scope malfunction | 2 (0.09) |
| Case completed using alternate scope for the 85 cases | 84 (98.8) |
| Laser, n (%) | |
| Thulium fiber laser | 994 (45.9) |
| Holmium laser without + with Moses technology | 1171+18 (54.1) |
| Basketing, n (%) | 818 (37.5) |
| Laser time, median (IQR) | 21 (15–39) |
| Total operation time, median (IQR) | 56 (40–66) |
*More than one modality possible (combination of modalities). IQR=Interquartile range, ETO=Ethylene oxide