Table 4.
Reduction in Planned Secondary (Staged) Procedures
| Stone free, n = 7 | Not stone free, n = 14 | Overall, n = 21 | |
|---|---|---|---|
| Stone free, n/N, (%) | 7/7 (100.0) (7/7) | 0/14 (0.0) | 7/21 (33.3) |
| Patients with CT imaging, n/N, (%) | 5/7 (71.4) | 9/13 (69.2) | 14/20 (70.0) |
| Total baseline stone volume, mm3 (mean ± SD) | 2858.6 ± 2136.1 | 2387.9 ± 1409.5 | 2556.0 ± 1637.5 |
| Total volume of stone removed, mm3 (mean ± SD) | 2858.6 ± 2136.1 | 2212.1 ± 1356.8 | 2443.0 ± 1624.8 |
| Mean stone clearance, % (mean ± SD) | 100.0 ± 0.0 | 91.3 ± 12.6 | 94.4 ± 10.8 |
| Second procedure performed as planned, n/N, (%) | 0/7 (0.0) | 2/14 (14.3) | 2/21 (9.5) |
| Second procedure avoided, n/N, (%) | 7/7 (100) | 12/14 (85.7) | 19/21 (90.5) |
n = number; N = total number.