Treatment of Urolithiasis with Thulium Fiber Laser in Fragmentation Mode Using Optimized Pulse Sequences.

The super-pulsed thulium fiber laser (SP TFL) is a new alternative to high-power holmium laser for intracorporeal lithotripsy. The SP TFL has shown advantages in dusting regimes, but benefits in fragmentation regimes are less understood. The second-generation SP TFL introduces an advanced fragmentation pulse (AFP) sequence to maximize SP TFL's efficiency in fragmentation.

Influence of acid and thermal treatment on regeneration of spent bleaching clay and conversion of residual oil to biodiesel.

Spent bleaching clay (SBC) is a hazardous waste produced by vegetable oil refining industries. SBC contains a residual oil (RO) with a lot of organic and inorganic impurities and its disposal leads to severe environmental consequences. In this study, SBC regeneration by extraction, acid modification and pyrolysis under various conditions and biodiesel production were studied.

[Experience in the use of confocal laser endomicroscopy for the diagnosis of bladder papillary tumors].

Introduction: Visual confirmation of suspicious changes in the urinary tract mucosa is the cornerstone in the diagnosis of urothelial cancer. However, with bladder tumors, it is impossible to obtain histopathological data during cystoscopy both in white light and in photodynamic and narrow-spectrum modes, as well as with computerized chromoendoscopy. Confocal laser endomicroscopy (probe-based confocal laser endomicroscopy - pCLE) is an optical imaging technique that provides high-resolution in vivo imaging and real-time evaluation of urothelial lesions.

[Comparative study of the efficacy and safety of a new generation of thulium fiber lasers for ureteroscopy and lithotripsy].

Introduction: The development and implementation in clinical practice of a 3rd generation thulium fiber laser with the possibility of computer control (modulation) of the shape, amplitude and pulse repetition rate opens up new possibilities for thulium fiber laser lithotripsy.

Aim: To carry out a comparative study of the efficacy and safety of thulium fiber laser lithotripsy using a of the 2nd (FiberLase U3) and 3rd generation devices (FiberLase U-MAX).

Materials And Methods: A total of 218 patients with solitary ureteral stones, who underwent to ureteroscopy with lithotripsy using 2nd and 3rd generation thulium fiber lasers (IRE-Polus, Russia) from January 2020 to May 2022 with the same peak power (500 W), laser settings of 1 joule, 10 Hz and with a laser fiber diameter of 365 m, were included in the prospective study.

[Percutaneous nephrolithotomy in a patient after liver transplantation].

The work is devoted to the description of percutaneous nephrolithotomy in a patient who previously underwent liver transplantation. In case of immunodeficiency of any etiology, one-stage non-severe kidney injury is less dangerous compared to infectious and inflammatory complications, which naturally have more severe course compared to in those with intact immune system. Based on these considerations, the patient underwent percutaneous nephrolithotomy, which allowed to remove the stone of 2.