Table 2.
Patient characteristics, intraoperative and postoperative data for RIRS using SP TFL and Ho:YAG with 200-μm fibers
| SP TFL 200 μm (n = 32) |
Ho:YAG 200 μm (n = 28) |
p-value | |
|---|---|---|---|
| Mean age, years (range) | 51.2 ± 14.1 (28–83) | 53.4 ± 15.1 (30–81) | 0.551 |
| Mean stone size, mm ± SD (range) | 11.4 ± 3.1 (5.0–20.0) | 12.3 ± 3.9 (7.0–20.0) | 0.477 |
| Median stone volume, mm3 (IQR) | 329.9 (293.2–628.3) | 508.9 (293.2–565.5) | 0.236 |
| Mean stone density, HU ± SD (range) | 1155 ± 364 (360–1940) | 1094 ± 350 (400–1500) | 0.806 |
| Median laser on time, min (IQR) | 9.2 (6.2–14.6) | 14.1 (10.8–18.1) | 0.021* |
| Median total energy for stone ablation, kJ (IQR) | 8.4 (5.8–15.2) | 15.2 (11.1–25.3) | 0.005* |
| Median ablation speed, mm3/sec (IQR) | 0.8 (0.5–1.0) | 0.6 (0.4–0.9) | 0.187 |
| Median ablation efficacy, J/mm3 (IQR) | 24.5 (14.5–32.3) | 31.8 (22.5–42.5) | 0.046* |
| Median energy consumption, J/sec (IQR) | 17.1 (15.0–24.2) | 20.0 (15.0–25.8) | 0.699 |
| Mean operation time, min ± SD (range) | 74.4 ± 26.3 (35–120) | 90.0 ± 31.8 (35–165) | 0.054 |
| Median fluoroscopy time, sec (IQR) | 56.0 (40.0–119.0) | 65.0 (58.0–107.0) | 0.241 |
| Median radiation exposure, mGy/cm2 (IQR) | 328.5 (121.0–898.5) | 377.0 (226.8–885.3) | 0.366 |
|
UAS use ratio: 11–13 Fr, N |
19 / 32 | 18 / 10 | 0.451 |
| 12–14 Fr, N | 13 / 32 | 18 / 10 | |
| Mean catheterization time, days ± SD | 1.7 ± 1.5 | 1.1 ± 0.3 | 0.075 |
| Mean preoperative Hb, mmol/l ± SD | 143.4 ± 15.3 | 138.1 ± 18.7 | 0.238 |
| Mean postoperative Hb, mmol/l ± SD | 137.3 ± 18.9 | 132.8 ± 18.2 | 0.998 |
Data presented as mean ± SD (range) or median (IQR) where appropriate
*Statistically significant difference with p < 0.05