Table 1.
Patient characteristics, intraoperative and postoperative data for RIRS with SP TFL using 150- and 200-μm fibers
| SP TFL 150 μm N = 34 |
SP TFL 200 μm N = 32 |
p-value | |
|---|---|---|---|
| Mean age, years (range) | 54.5 ± 12.2 (33–78) | 51.2 ± 14.1 (28–83) | 0.435 |
| Mean stone size, mm ± SD (range) | 11.3 ± 3.2 (6.0–20.0) | 11.4 ± 3.1 (5.0–20.0) | 0.895 |
| Median stone volume, mm3 (IQR) | 361.3 (200.3–628.3) | 329.9 (293.2–628.3) | 0.493 |
| Mean stone density, HU ± SD (range) | 1029 ± 340 (320–1500) | 1154 ± 364 (360–1940) | 0.808 |
| Median laser on time, min (IQR) | 11.4 (7.7–14.9) | 9.2 (6.2–14.6) | 0.390 |
| Median total energy for stone ablation, kJ (IQR) | 10.8 (7.3–13.5) | 8.4 (5.8–15.2) | 0.626 |
| Median ablation speed, mm3/sec (IQR) | 0.7 (0.5–1.0) | 0.8 (0.5–1.0) | 0.447 |
| Median ablation efficacy, J/mm3 (IQR) | 27.4 (17.3–32.8) | 24.5 (14.5–32.3) | 0.713 |
| Median energy consumption, J/sec (IQR) | 15.2 (15.0–18.6) | 17.1 (15.0–24.2) | 0.111 |
| Mean operation time, min ± SD (range) | 60.2 ± 20.1 (20–105) | 74.4 ± 26.3 (35–120) | 0.044* |
| Median fluoroscopy time, sec (IQR) | 51.0 (32.0–78.0) | 56.0 (40.0–119.0) | 0.355 |
| Median radiation exposure, mGy/cm2 (IQR) | 350.5 (222.0–526.9) | 328.5 (121.0–898.5) | 0.918 |
|
UAS use ratio: 11–13 Fr, N |
19 / 34 | 19 / 32 | 0.485 |
| 12–14 Fr, N | 15 / 34 | 13/ 32 | |
| Mean catheterization time, days ± SD | 1.5 ± 1.4 | 1.7 ± 1.5 | 0.579 |
| Mean preoperative Hb, mmol/l ± SD | 143.0 ± 16.3 | 143.4 ± 15.3 | 0.782 |
| Mean postoperative Hb, mmol/l ± SD | 139.0 ± 16.4 | 137.3 ± 18.9 | 0.436 |
Data presented as mean ± SD (range) or median (IQR) where appropriate
*Statistically significant difference with p < 0.05