scholarly journals Prospective Single-Center Study of SuperPulsed Thulium Fiber Laser in Retrograde Intrarenal Surgery: Initial Clinical Data

2021 ◽  
pp. 1-7
Author(s):  
Mark Taratkin ◽  
Camilla Azilgareeva ◽  
Dmitry Korolev ◽  
Yazeed Barghouthy ◽  
Dmitry Tsarichenko ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Low Dose ◽  
Prospective Clinical Study ◽  
Efficient Tool ◽  
Retrograde Intrarenal Surgery ◽  
Stone Size ◽  
Single Center Study ◽  
Thulium Fiber Laser ◽  
Stone Type ◽  
Stone Density

<b><i>Introduction:</i></b> The objective of this study was to present our clinical experience of using the thulium fiber laser in retrograde intrarenal surgery (RIRS). <b><i>Methods:</i></b> A prospective clinical study performed after the IRB approval (Sechenov University, Russia). Patients with stones &#x3c;30 mm were treated with SuperPulsed thulium fiber laser (SP TFL) (NTO IRE-Polus, Russia) through a 200-μm-diameter fiber. Stone size, density, the duration of the operation, and laser on time (LOT) were measured. Based on the surgeon’s feedback, retropulsion and intraoperative visibility were also assessed (Likert scale). Stone-free rates (SFRs) were assessed with a low-dose CT scan 90 days after the operation. <b><i>Results:</i></b> Between January 2018 and December 2019, 153 patients (mean age 54 ± 2.8 years) underwent RIRS with SP TFL (mean stone density 1,020 ± 382 HU). Median stone volume was 279.6 (139.4–615.8) mm<sup>3</sup>. Median LOT was 2.8 (IQR 1.6–6.6) min with median total energy for stone ablation 4.0 (IQR 2.1–7.17) kJ, median ablation speed was 1.7 (1.0–2.8) mm<sup>3</sup>/s, median ablation efficacy was 13.3 (7.3–20.9) J/mm<sup>3</sup>, and energy consumption was 170.3 (59.7–743.3) J/s. Overall, the SFR (at 3 months) was 89%. The overall complication rate was 8.4%. Retropulsion was present in 23 (15.1%) patients. Visibility was estimated as optimal in most patients, with poor visibility reported in only 13 (8.5%) patients. <b><i>Conclusion:</i></b> The SP TFL is a safe and efficient tool in lithotripsy, irrespective of the stone type and density. Retropulsion is minimal and visibility is maintained with SP TFL. Nonetheless, further clinical studies are needed to ensure optimal comparison with conventional holmium:YAG lithotripsy.

Prospective clinical study on superpulse thulium fiber laser: Initial analysis of optimal laser settings

2019 ◽  
Vol 18 (1) ◽  
pp. e500 ◽  
Author(s):  
A.M. Dymov ◽  
L. Rapoport ◽  
D. Enikeev ◽  
D. Tsarichenko ◽  
N. Sorokin ◽  
...  
Keyword(s):  
Clinical Study ◽  
Fiber Laser ◽  
Prospective Clinical Study ◽  
Initial Analysis ◽  
Thulium Fiber Laser

60watt superpulse thulium fiber laser in retrograde intrarenal surgery-aiming towards faster dust

2021 ◽  
Vol 79 ◽  
pp. S413
Author(s):  
V. Chandra Mohan ◽  
P. Ramakrishna ◽  
P.M. Siddalinga ◽  
G. Soundarya ◽  
A. Hemnath ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Retrograde Intrarenal Surgery ◽  
Thulium Fiber Laser

Superpulsed Thulium Fiber Laser for Stone Dusting: In Search of a Perfect Ablation Regimen—A Prospective Single-Center Study

2020 ◽  
Vol 34 (11) ◽  
pp. 1175-1179 ◽  
Author(s):  
Dmitry Enikeev ◽  
Mark Taratkin ◽  
Roman Klimov ◽  
Jasur Inoyatov ◽  
Camilla Azilgareeva ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Single Center ◽  
Single Center Study ◽  
Thulium Fiber Laser ◽  
Center Study

scholarly journals PD01-06 PROSPECTIVE CLINICAL STUDY ON SUPERPULSE THULIUM FIBER LASER: INITIAL ANALYSIS OF OPTIMAL LASER SETTINGS

2019 ◽  
Vol 201 (Supplement 4) ◽  
Author(s):  
Alim Dymov* ◽  
Leonid Rapoport ◽  
Dmitry Tsarichenko ◽  
Dmitry Enikeev ◽  
Nikolay Sorokin ◽  
...  
Keyword(s):  
Clinical Study ◽  
Fiber Laser ◽  
Prospective Clinical Study ◽  
Initial Analysis ◽  
Thulium Fiber Laser

Retrograde intrarenal surgery using a 1.94 μm superpulsed thulium fiber laser

Urologiia ◽  
2021 ◽  
Vol 1_2021 ◽  
pp. 28-32
Author(s):  
R.E. Klimov Klimov ◽  
V.Yu. Lekarev Lekarev ◽  
D.G. Tsarichenko Tsarichenko ◽  
A.M. Dymov Dymov ◽  
G.N. Akopyan Akopyan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Retrograde Intrarenal Surgery ◽  
Thulium Fiber Laser

scholarly journals Outcomes of fluoroscopy-free retrograde intrarenal surgery and predictive factors of stone-free

2021 ◽  
Vol 93 (4) ◽  
pp. 425-430
Author(s):  
Huseyin Kocakgol ◽  
Hasan Riza Aydin ◽  
Ahmet Ozgur Guctas ◽  
Cagri Akin Sekerci ◽  
Deniz Ozturk Kocakgol ◽  
...  
Keyword(s):  
Operation Time ◽  
Female Gender ◽  
Ureteral Injury ◽  
Preoperative Imaging ◽  
Retrograde Intrarenal Surgery ◽  
Stone Size ◽  
Stone Burden ◽  
Stone Free Rate ◽  
Stone Density ◽  
Free Rate

Objective: To evaluate the outcomes of flouroscopy-free retrograde intrarenal surgery (ffRIRS) and to investigate the factors that may affect stone-free rate. Materials and methods: The charts of patients who underwent ffRIRS between January 2017 and August 2019 were reviewed retrospectively. Patients with missing preoperative imaging and patients with kidney anomalies were excluded from the study. Age, gender, stone size, stone localization, stone density, laterality, operation time, stone-free rate, complications and auxiliary procedures were recorded and analyzed. Results: Study group involved 44 (43.1%) female and 58 (56.8%) male patients. Stone-free rate in a single-session ffRIRS were found to be correlated with stone localization (p = 0.003), stone volume (p = 0.004), and stone density (p = 0.009) but not with age (p = 0.950). Patients with multiple calyceal stones and a stone burden over 520 mm3 were found to be less stone-free. The complication rate in female gender (n = 7) was significantly higher compared to male (n = 1) (p = 0.011). No major complications such as ureteral injury or avulsion were observed. Overall, 13 patients (12.7%) needed auxiliary procedures. The operation time seemed to be affected by stone size and gender (p = 0.005; p = 0.044, respectively). Conclusions: Stone-free rate in ffRIRS were found to be affected by stone density, size, and localization. Patients with multiple caliceal stones and high stone burden (< 520 mm3) have been found to have low stone-free rate, so one can speculate that having fluoroscopy assistance in RIRS might help us to improve surgical success.

scholarly journals External validation of the R.I.R.S. scoring system to predict stone-free rate after retrograde intrarenal surgery

BMC Urology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Cong Wang ◽  
ShouTong Wang ◽  
Xuemei Wang ◽  
Jun Lu
Keyword(s):  
Scoring System ◽  
Kidney Stone ◽  
Medical Center ◽  
External Validation ◽  
Retrograde Intrarenal Surgery ◽  
Stone Burden ◽  
Stone Free Rate ◽  
Stone Density ◽  
Free Rate ◽  
Free Status

Abstract Background The R.I.R.S. scoring system is defined as a novel and straightforward scoring system that uses the main parameters (kidney stone density, inferior pole stones, stone burden, and renal infundibular length) to identify most appropriate patients for retrograde intrarenal surgery (RIRS). We strived to evaluate the accuracy of the R.I.R.S. scoring system in predicting the stone-free rate (SFR) after RIRS. Methods In our medical center, we retrospectively analyzed charts of patients who had, between September 2018 and December 2019, been treated by RIRS for kidney stones. A total of 147 patients were enrolled in the study. Parameters were measured for each of the four specified variables. Results Stone-free status was achieved in 105 patients (71.43%), and 42 patients had one or more residual fragments (28.57%). Differences in stone characteristics, including renal infundibulopelvic angle, renal infundibular length, lower pole stone, kidney stone density, and stone burden were statistically significant in patients whether RIRS achieved stone-free status or not (P < 0.001, P: 0.005, P < 0.001, P < 0.001, P: 0.003, respectively). R.I.R.S. scores were significantly lower in patients treated successfully with RIRS than patients in which RIRS failed (P < 0.001). Binary logistic regression analyses revealed that R.I.R.S. scores were independent factors affecting RIRS success (P = 0.033). The area under the curve of the R.I.R.S. scoring system was 0.737. Conclusions Our study retrospectively validates that the R.I.R.S. scoring system is associated with SFR after RIRS in the treatment of renal stones, and can predict accurately.

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