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https://www.readbyqxmd.com/read/27913238/contemporary-ureteroscopic-management-of-renal-stones
#1
S Proietti, T Knoll, G Giusti
The advancements in the endourological armamentarium and the evolution of ureteroscopes with the advent of fiberoptic first and then digital technology, the introduction of holmium laser lithotripters, together with the increasing number of requests for minimally invasive procedures has ameliorated outcomes, patients' safety and comfort, making the use of flexible ureteroscopy for urinary calculi increasingly attractive and widespread among urological community. Due to its high stone-free rates and low morbidity, flexible ureteroscopy has become a viable option for the treatment of renal stones...
November 29, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27890653/recent-advances-in-lithotripsy-technology-and-treatment-strategies-a-systematic-review-update
#2
H E Elmansy, J E Lingeman
INTRODUCTION: Shock wave lithotripsy (SWL) is a well - established treatment option for urolithiasis. The technology of SWL has undergone significant changes in an attempt to better optimize the results while reducing failure rates. There are some important limitations that restrict the use of SWL. In this review, we aim to place these advantages and limitations in perspective, assess the current role of SWL, and discuss recent advances in lithotripsy technology and treatment strategies...
November 24, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27885825/multiphase-fluid-solid-coupled-analysis-of-shock-bubble-stone-interaction-in-shockwave-lithotripsy
#3
K G Wang
A novel multiphase fluid-solid coupled computational framework is applied to investigate the interaction of a kidney stone immersed in liquid with a lithotripsy shock wave (LSW) and a gas bubble near the stone. The main objective is to elucidate the effects of a bubble in the shock path to the elastic and fracture behaviors of the stone. The computational framework couples a finite volume two-phase computational fluid dynamics (CFD) solver with a finite element (FE) computational solid dynamics (CSD) solver...
November 24, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27863458/bench-top-and-initial-clinical-evaluation-of-the-shockpulse-stone-eliminator%C3%A2-in-percutaneous-nephrolithotomy
#4
Andre Alessandro Matteliano, Thomas de Los Reyes, Ryan F Paterson, Dirk Lange, Michael Eric Lipkin, Ben Hall Chew
PURPOSE: Standardized bench testing of the new ShockPulseTM intracorporeal lithotripter was performed against three commercially available lithotripsy systems to determine differences and nuances in performance. MATERIALS & METHODS: The ShockPulse intracorporeal lithotripter was tested against the LUS-2TM, CyberWandTM and EMS LithoClastTM in a standardized bench setting using hard (Ultracal-30) and soft (Plaster of Paris) stone phantoms. An in vitro kidney model was used to record the time needed to fragment stone samples into retrievable sized pieces...
November 18, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27845548/safety-and-efficacy-of-pneumatic-lithotripters-versus-holmium-laser-on-multiple-ureteral-calculi
#5
Hakan Ercil, Ergun Alma, Okan Bas, Umut Unal, Nevzat Can Sener, Ediz Vuruskan, Aykut Buğra Senturk, Zafer Gokhan Gurbuz
BACKGROUND: Different energy sources can be used for ureteroscopic stone fragmentation, such as pneumatic, ultrasonic, laser or electrohydraulic. The aim of this study was to compare the efficacy and safety of pneumatic lithotripters versus Ho: YAG laser in the treatment of multiple stones in the distal ureter. METHODS: A retrospective evaluation was done using the data of patients to whom ureteroscopic lithotripsy (URL) was applied for ureter stones in our clinic...
November 2016: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/27826048/innovations-in-percutaneous-nephrolithotomy
#6
REVIEW
Thomas Tailly, John Denstedt
Technical innovations in all aspects of percutaneous nephrolithotomy have changed the field considerably. The current review is aimed at reporting on the most recent advancements in the field of percutaneous nephrolithotomy. Improvements in CT imaging and the possibility of 3D rendering have dethroned the intravenous pyelogram as gold standard for pre-operative imaging. Where gaining access in the lower pole in prone position with telescopic metal dilators, placing a 30F tract used to be standard, the plethora of alternatives provides the trained surgeon with a large armamentarium to tackle any obstacle...
November 4, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27819138/super-mini-percutaneous-nephrolithotomy-smp-in-the-treatment-of-pediatric-nephrolithiasis-evaluation-of-the-initial-results
#7
Yongda Liu, Wenqi Wu, Tuerxun Aierken, Yang Liu, Simayi Abulizi, Jinxing Huang, Batuer Abudukahaer, Yizhou Zhou, Jiawei Luo, Wen Zhong, Zhijian Zhao, Wei Zhu, Guohua Zeng
OBJECTIVE: To evaluate the efficacy and safety of Super-mini percutaneous nephrolithotomy (SMP) in the treatment of pediatric kidney stones. PATIENTS AND METHODS: We retrospectively reviewed the records of 111 children with renal stones treated with SMP technique in four different centers between September 2014 and September 2015. The indications for SMP treatment in all these kids were either previously failed SWL or RIRS approaches or according to their parents' preferences...
November 7, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27800291/comparison-of-extracorporeal-shock-wave-lithotripsy-for-urolithiasis-between-children-and-adults-a-single-centre-study
#8
Nadeem Iqbal, Salman Assad, Joshua Rahat Aleman Bhatti, Aisha Hasan, Muhammad Usman Shabbir, Saeed Akhter
OBJECTIVE: To retrospectively evaluate the effectiveness of extracorporeal shock wave lithotripsy (ESWL) for urolithiasis and compare the results between children and adults. MATERIALS AND METHODS: From January 2011 to January 2015 (four years), ESWL was performed in 104 children and 300 adults for urolithiasis. MODULITH(®) SLX-F2 lithotripter (Storz Medical AG, Tägerwilen, Switzerland) equipment was used for ESWL. The stone-free rates, the number of ESWL sessions required, complication rates and ancillary procedures used were evaluated in a comparative manner...
September 29, 2016: Curēus
https://www.readbyqxmd.com/read/27761633/does-a-retropulsion-prevention-device-equalize-the-surgical-success-of-ho-yag-laser-and-pneumatic-lithotripters-for-upper-ureteral-stones-a-prospective-randomized-study
#9
Sahin Bagbanci, Mumtaz Dadali, Yeliz Dadalı, Levent Emir, Ozkan Gorgulu, Ayhan Karabulut
To establish if a retropulsion prevention device for ureteral stones equalizes surgical success and push-back rates of Ho:YAG laser and pneumatic lithotripters for upper ureteral stones. Patients with upper ureteral stones (n = 267) were treated endoscopically at the Department of Urology between April 2014 and December 2015. Patients were randomly assigned to pneumatic and Ho:YAG laser lithotripters as group-1 and group-2, respectively. Lithotripsy was performed with Stone Cone(TM) in both groups. The surgical success rate on the first postoperative day was 81...
October 19, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27759736/the-future-of-ureteroscopy
#10
Ben H Chew, Dirk Lange
Open ureterolithotomy and pyelolithotomy used to be first line therapy for treating kidney and ureteral stones. With the advent of shockwave lithotripsy, open stone surgery became less prevalent, but once ureteroscopy became more prevalent, open stone surgery became all but extinct. Advances in smaller, more flexible endoscopes and improvements in intracorporeal lithotripters, ureteroscopy has become a mainstay of therapy for kidney stones. The holmium:YAG laser can be utilized through flexible instruments and fragments any stone no matter what it is composed of...
October 19, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/27758111/a-novel-device-to-prevent-stone-fragment-migration-during-percutaneous-lithotripsy-results-from-an-in-vitro-kidney-model
#11
Jodi A Antonelli, Heather Beardsley, Stephen Faddegon, Monica Sc Morgan, Jeffrey C Gahan, Margaret S Pearle, Jeffrey A Cadeddu
PURPOSE: We developed a polyethylene sack (the PercSac) that fits over the shaft of a rigid nephroscope and is deployed into the collecting system to capture a stone and contain fragments during PCNL. We previously reported results using the PercSac in a percutaneous cystolithopaxy model. Herein we compare the efficiency of stone fragmentation with and without the PercSac in an anatomically correct in vitro PCNL model. MATERIALS AND METHODS: The PCNL model consisted of a human collecting system model created on a 3-D printer...
October 19, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27736195/comparison-of-the-nanopulse-lithotripter-to-the-holmium-laser-stone-fragmentation-efficiency-and-impact-on-flexible-ureteroscope-deflection-and-flow
#12
Adam Geoffrey Kaplan, Tony T Chen, Georgy Sankin, Chen Yang, Joanne Andrea Dale, W Neal Simmons, Pei Zhong, Glenn M Preminger, Michael Eric Lipkin
INTRODUCTION: The Nanopulse Lithotripter (NPL, Lithotech Medical, Israel) is a novel intracorporeal device that uses a nanosecond duration electrical discharge through a reusable flexible coaxial probe to endoscopically fragment urinary stones. This device was compared to a holmium laser lithotripsy (HoL) with regards to stone fragmentation efficiency (SFE) and its impact on flexible ureteroscope (URS) deflection and flow of irrigation. METHODS: Using a custom bench model, a 6mm Begostone cylindrical phantom (mixture 5:2) was confined under 0...
October 13, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27717761/quantitative-prediction-of-stone-fragility-from-routine-dual-energy-ct-ex-vivo-proof-of-feasibility
#13
Andrea Ferrero, Juan C Montoya, Lisa E Vaughan, Alice E Huang, Ian O McKeag, Felicity T Enders, James C Williams, Cynthia H McCollough
RATIONALE AND OBJECTIVES: Previous studies have demonstrated a qualitative relationship between stone fragility and internal stone morphology. The goal of this study was to quantify morphologic features from dual-energy computed tomography (CT) images and assess their relationship to stone fragility. MATERIALS AND METHODS: Thirty-three calcified urinary stones were scanned with micro-CT. Next, they were placed within torso-shaped water phantoms and scanned with the dual-energy CT stone composition protocol in routine use at our institution...
December 2016: Academic Radiology
https://www.readbyqxmd.com/read/27704184/mini-percutaneous-nephrolithotomy-for-stones-in-anomalous-kidneys-a-prospective-study
#14
Sanjay Khadgi, Babu Shrestha, Hamdy Ibrahim, Sunil Shrestha, Mohammed S ElSheemy, Ahmed M Al-Kandari
To evaluate safety and efficacy of minipercutaneous nephrolithotomy (Mini-PNL) in management of stones in different types of renal anomalies. Patients with stones ≥2 cm or SWL-resistant stones in anomalous-kidneys treated by Mini-PNL between March 2010 and September 2012 were included prospectively. Mini-PNL was done under regional anesthesia in prone position with fluoroscopic guidance through 18 Fr sheath using semirigid ureteroscope (8.5/11.5 Fr) and pneumatic lithotripter. All patients were followed-up for 2-3 years...
October 4, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27686059/a-randomised-controlled-trial-evaluating-renal-protective-effects-of-selenium-with-vitamins-a-c-e-verapamil-and-losartan-against-extracorporeal-shockwave-lithotripsy-induced-renal-injury
#15
Ahmed R El-Nahas, Mohamed M Elsaadany, Diaa-Eldin Taha, Ahmed M Elshal, Mohamed Abo El-Ghar, Amani M Ismail, Essam A Elsawy, Hazem H Saleh, Ehab W Wafa, Amira Awadalla, Tamer S Barakat, Khaled Z Sheir
OBJECTIVE: To evaluate the protective effects of selenium with vitamins A, C and E (selenium ACE, i.e. antioxidants), verapamil (calcium channel blocker), and losartan (angiotensin receptor blocker) against extracorporeal shockwave lithotripsy (ESWL)-induced renal injury. PATIENTS AND METHODS: A randomised controlled trial was conducted between August 2012 and February 2015. Inclusion criteria were adult patients with a single renal stone (<2 cm) suitable for ESWL...
September 30, 2016: BJU International
https://www.readbyqxmd.com/read/27649337/lithotripter-shock-wave-interaction-with-a-bubble-near-various-biomaterials
#16
S W Ohl, E Klaseboer, A J Szeri, B C Khoo
Following previous work on the dynamics of an oscillating bubble near a bio-material (Ohl et al 2009 Phys. Med. Biol. 54 6313-36) and the interaction of a bubble with a shockwave (Klaseboer et al 2007 J. Fluid Mech. 593 33-56), the present work concerns the interaction of a gas bubble with a traveling shock wave (such as from a lithotripter) in the vicinity of bio-materials such as fat, skin, muscle, cornea, cartilage, and bone. The bubble is situated in water (to represent a water-like biofluid). The bubble collapses are not spherically symmetric, but tend to feature a high speed jet...
October 7, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27617549/-predictive-score-of-success-adapted-to-our-environment-to-improve-results-of-extracorporeal-lithotripsy
#17
R G Bengió, L Arribillaga, J Epelde, S Orellana, H García-Önto, A Montedoro, E Cordero, G Oulton, R H Bengió
OBJECTIVE: To present a predictive tool of success of ESWL adapted to our environment. METHODS: We performed a retrospective, descriptive and analytical study of patients with renal and upper ureteral stones whom underwent ESWL with DUET MAGNA lithotripter between January 2014 and March 2015. We included 114 patients in whom demographics and CT scan characteristics were studied. Multivariate analysis by logistic regression was performed to establish independent predictors of success in ESWL...
September 2016: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/27576325/a-low-or-high-bmi-is-a-risk-factor-for-renal-hematoma-after-extracorporeal-shock-wave-lithotripsy-for-kidney-stones
#18
Fabio Nussberger, Beat Roth, Tobias Metzger, Bernhard Kiss, George N Thalmann, Roland Seiler
The purpose of this study was to evaluate risk factors for renal hematoma after extracorporeal shock wave lithotripsy (SWL) for kidney stones in a matched case-control analysis of a subgroup of patients recruited from a prospective randomized cohort. Between 06/2010 and 03/2013, 418 patients underwent SWL with the MODULITH(®)-SLX-F2-lithotripter for kidney stones. In 39/418 patients (9 %), ultrasound at post-treatment day 1 revealed renal hematomas. For 37 of these patients, a matched group without hematoma could be selected according to the following matching criteria: age, gender, number and energy of shock waves, stone burden and localization...
August 30, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27556077/endoscopic-extraction-of-adjustable-gastric-bands-after-intragastric-migration-as-a-complication-of-bariatric-surgery-technique-and-advice
#19
David Collado-Pacheco, Luis Ramon Rábago-Torre, Maria Arias-Rivera, Alejandro Ortega-Carbonel, Ana Olivares-Valles, Alicia Alonso-Prada, Jaime Vázquez-Echarri, Norberto Herrera-Merino
BACKGROUND: Surgery has been the method most widely used to manage the extraction of gastric bands with inclusion as a late complication of bariatric surgery; however, surgical extraction entails morbidity and limits future surgical procedures. The development of endoscopic techniques has provided an important means of improving the treatment of this complication, enabling minimally invasive and safe procedures that have a high success rate. METHODS: A retrospective analysis was conducted of patients who had laparoscopic gastric banding complicated by intragastric migration and were treated endoscopically...
June 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27547659/has-the-pelvic-renal-stone-position-inside-the-upper-loop-of-jj-stent-any-influence-on-the-extracorporeal-shock-wave-lithotripsy-results
#20
Catalin Pricop, Dragomir N Serban, Ionela Lacramioara Serban, Alin-Adrian Cumpanas, Constantin-Virgil Gingu
BACKGROUND: JJ stents are often encountered in patients with pelvic renal stones referred for shock wave lithotripsy, most of them being placed either for obstructive renal pelvic stones or for ureteric stones mobilized retrograde during the JJ stent insertion. The aim of the study was to determine whether the relative stone position in the upper loop of the JJ stent during extracorporeal shock wave lithotripsy (SWL) influences the efficiency of the procedure. The study was designed as a prospective cohort study on 162 patients addressing the same urological department, with single renal pelvic stone (primary or mobilized to the renal pelvis during the insertion of JJ stent), smaller than 15 mm, with JJ stent, treated by SWL using a second generation spark gap lithotripter, 18 kV, 3000 waves/session...
2016: SpringerPlus
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