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. 2023 Oct 19;41(12):3705–3711. doi: 10.1007/s00345-023-04651-1

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