Two hundred sixty patients with ureteric stones were analyzed in a prospective bicentric study that lasted 1 year. The aim of our study was to evaluate the difference in complication rate between different ureteric stone lithotripsy modalities. Localization of ureteric stones and difference in disintegration success are the most important factors in determining the first treatment approach for ureteric stones. Influence of lithotripsy modalities on complication rateДЇull Text Available Introduction. mirabilis viability is less after holmium:YAG irradiation compared to other lithotripsy devices. The rate of bacterial sterilization was 50% for holmium:YAG lithotripsy treated stones versus 0% for each of the other cohorts, p less than 0.01. Median bacterial counts (colony forming units per ml) were 8 X 106 in controls and 3 X 106 in shock wave, 3 X 107 in ultrasonic, 4 X 105 in electrohydraulic, 8 X 106 in pneumatic, 5 X 104 in holmium:YAG and 1 X 106 in pulsed dye laser lithotripsy, p less than 0.001. Bacterial counts and the rate of bacterial sterilization were compared.

After lithotripsy, stone fragments were sonicated and specimens were serially plated for 48 hours at 38 C. Calculi were fragmented with no lithotripsy (controls), or shock wave, intracorporeal ultrasonic, electrohydraulic, pneumatic, holmium:YAG or pulsed dye laser lithotripsy. Human calculi of known struvite composition (greater than 90% magnesium ammonium phosphate hexahydrate) were incubated with Proteus mirabilis. We postulated that bacterial viability of struvite calculi would be less for calculi fragmented with holmium:YAG irradiation compared to other lithotripsy devices. The photothermal mechanism of holmium:YAG lithotripsy is uniquely different than other lithotripsy devices.

Urinary calculi composed of struvite harbor urease-producing bacteria within the stone. Proteus mirabilis viability after lithotripsy of struvite calculi Our understanding of shock wave physics and the physiologic effects of shock waves has progressed greatly over the last decade resulting in insights that hopefully will be reflected favorably in future lithotriptor designs and lithotripsy techniques. Because of the clinical success of the original lithotriptor, the Dornier HM3, numerous manufacturers introduced different approaches to lithotripsy based on empiricism rather than an understanding of the fundamental mechanisms of this new technology. Complex correction of technical issues of electric nanopulse CLT can be a way of probe resources saving.Д®xtracorporeal shock wave lithotripsy (ESWL) has revolutionized the treatment of urolithiasis. The relationship between lithotripsy effectiveness and tip diameter of probes, pulse energy, pulse frequency was assessed, and resources of lithotripsy probes with different diameters of the tip were analyzed.Sufficient number of electric nanopulse to destroy stone models was less when tip diameter, nanopulse energy and frequency were greater.Effectiveness of electric nanopulse CLT can be enhanced with the increase of nanopulse energy, frequency and probe diameter.

Technical issues of electric nanopulse contact lithotripsy as factors affecting lithotripsy effectiveness and probe resoursesДirectory of Open Access Journals (Sweden)ДЇull Text Available To assess the relationship of main technical issues of electric nanopulse contact lithotripsy (CLT with lithotripsy effectiveness and lithotripsy resources of probe.Electric nanopulses were transmitted by the flexible probes and the lithotripter Г‚В«UrolitГ‚В».

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