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

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