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https://www.readbyqxmd.com/read/28981413/characterizing-the-acoustic-output-of-an-ultrasonic-propulsion-device-for-urinary-stones
#1
Bryan W Cunitz, Barbrina Dunmire, Michael R Bailey
A non-invasive ultrasound system to facilitate the passage of small kidney stones has been developed. The device incorporates a software based ultrasound platform programmed with B-mode and Doppler for visualizing stones, plus long duration focused pulses for repositioning stones using the same transducer. This paper characterizes the acoustic outputs of the ultrasonic propulsion device. Though the application and outputs are unique, measurements were performed based on regulatory standards for both diagnostic ultrasound and extracorporeal lithotripters...
October 2, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28870760/endoscopic-management-of-erosion-after-banded-bariatric-procedures
#2
Matthew D Spann, Chetan V Aher, Wayne J English, D Brandon Williams
BACKGROUND: Prosthetic materials wrapped around a portion of the stomach have been used to provide gastric restriction in bariatric surgery for many years. Intraluminal erosion of adjustable and nonadjustable gastric bands typically occurs many years after placement and results in various symptoms. Endoscopic management of gastric band erosion has been described and allows for optimal patient outcomes. OBJECTIVES: We will describe our methods and experience with endoscopic management of intraluminal gastric band erosions after bariatric procedures...
July 24, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28859485/randomized-controlled-trial-comparing-three-different-modalities-of-lithotrites-for-intracorporeal-lithotripsy-in-pcnl
#3
Nadya York, Michael Borofsky, Ben H Chew, Casey A Dauw, Ryan F Paterson, John D Denstedt, Hassan Razvi, Robert B Nadler, Mitchell R Humphreys, Glenn M Preminger, Stephen Y Nakada, Amy E Krambeck, Nicole L Miller, Colin Terry, Lori Rawlings, James E Lingeman
PURPOSE: To compare the efficiency (stone fragmentation and removal time) and complications of three models of intracorporeal lithotripters in percutaneous nephrolithotomy (PCNL). MATERIALS AND METHODS: Prospective, randomized controlled trial at nine centers in the North America from 2009 to 2016. Patients were randomized to one of three lithotripter devices: the Cyberwand, a dual probe ultrasonic device; the Swiss Lithoclast Select, a combination pneumatic and ultrasonic device; and the StoneBreaker, a portable pneumatic device powered by CO2 cartridges...
August 31, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28830243/device-related-adverse-events-during-percutaneous-nephrolithotomy-review-of-the-manufacturer-and-user-facility-device-experience-maude-database
#4
Neel H Patel, Ariel Schulman, Jonathan Bloom, Nikil Uppaluri, John L Phillips, Sensuke Konno, Muhammed Choudhury, Majid Eshghi
INTRODUCTION AND OBJECTIVES: Percutaneous Nephrolithotomy (PCNL) is an established technique for removal of large stones from the upper urinary tract. It is a complex, multistep procedure requiring several classes of instruments that are subject to operator misuse and device malfunction. We report device-related adverse events during PCNL from the MAUDE database using a recently developed standardized classification system. METHODS: The MAUDE database was queried for "percutaneous nephrolithotomy" from 2006 to 2016...
August 22, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28827902/the-efficacy-of-percutaneous-nephrolithotomy-using-pneumatic-lithotripsy-vs-the-holmium-laser-a-randomized-study
#5
Chaoying Liu, Houyong Zhou, Weisheng Jia, Hua Hu, Heng Zhang, Longkun Li
The objective of the study is to compare the efficacy of percutaneous nephrolithotomy using holmium laser vs pneumatic lithotripsy. From August 2010 to March 2014, 200 patients with double kidney and single kidney stones without previous operations or other diseases were randomized into two groups according to the type of lithotripter used: pneumatic (n = 100) and laser (n = 100). The preoperative, intraoperative, and post-operative follow-up findings were analyzed and compared. The average stone size was similar in both the pneumatic and holmium laser lithotripsy groups (202...
August 2017: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28766005/-what-is-the-current-status-of-shock-wave-lithotripsy
#6
REVIEW
A Neisius
BACKGROUND: Shock wave lithotripsy (SWL) became the therapy of choice for the majority of patients with urolithiasis early after its introduction in the early 1980s. Since then, SWL remains the only noninvasive therapy modality for the treatment of urinary stones. Although lithotripters became more versatile and affordable-making them available worldwide-indications for SWL have shifted as well. In most western countries, endoscopic techniques took the lead in stone therapy due to high (early) stone-free and better reimbursement rates...
August 1, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28756458/comparison-of-intermediate-and-low-frequency-shock-wave-lithotripsy-for-pediatric-kidney-stones
#7
Onur Kaygısız, Hakan Kılıçarslan, Ahmet Mert, Burhan Coşkun, Yakup Kordan
The aim of the study to compare low and intermediate shock wave frequency rates in terms of success and complications for treating pediatric kidney stones. This retrospective study was performed on 58 consecutive pediatric patients (24 girls, 34 boys) who underwent shock wave lithotripsy (SWL) for kidney stones with an electrohydraulic lithotripter between April 2014 and March 2016. In the first year, all children underwent SWL with a frequency of 90 SWs/min as an intermediate frequency (Group 90), and in the second year all children were treated by SWL using 60 SWs/min as a low frequency (Group 60)...
July 29, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28753887/minimally-invasive-surgical-ureterolithotomy-versus-ureteroscopic-lithotripsy-for-large-ureteric-stones-a-systematic-review-and-meta-analysis-of-the-literature
#8
REVIEW
Panagiotis Kallidonis, Panteleimon Ntasiotis, Thomas Knoll, Kemal Sarica, Athanasios Papatsoris, Bhaskar K Somani, Francesco Greco, Omar M Aboumarzouk, Mario Álvarez-Maestro, Francesco Sanguedolce
CONTEXT: The management of large ureteric stones represents a technical and clinical challenge. OBJECTIVE: To investigate the safety and efficacy of minimally invasive surgical ureterolithotomy (MISU) in comparison with ureteroscopic lithotripsy (URS) for the treatment of large ureteric stones. EVIDENCE ACQUISITION: The Preferred Reporting Items for Systematic Review and Meta-analyses (PRISMA) guidelines were followed for the conduction of the study, which was registered in the PROSPERO database...
April 26, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28720372/comparing-the-efficacy-and-safety-of-ultrasonic-versus-pneumatic-lithotripsy-in-percutaneous-nephrolithotomy-a-randomized-clinical-trial
#9
Mohammad Hadi Radfar, Abbas Basiri, Akbar Nouralizadeh, Hamidreza Shemshaki, Reza Sarhangnejad, Amir Hossein Kashi, Behzad Narouie, Amir Mohammad Soltani, Mahmoudreza Nasiri, Mehdi Sotoudeh
BACKGROUND: Percutaneous nephrolitotomy (PCNL) is the preferred treatment for large renal stones. There is a need for more comparative data for different lithotripters used in PCNL. OBJECTIVE: To evaluate the comparative safety and efficacy of ultrasonic and pneumatic lithotripsy in patients undergoing PCNL. DESIGN, SETTING, AND PARTICIPANTS: This randomized clinical trial was conducted at Labbafinejad University Hospital, Tehran, Iran. A total of 180 patients were selected and divided randomly into two groups: 88 patients to pneumatic and 92 to ultrasonic lithotripsy...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28717532/retrograde-intrarenal-surgery-for-renal-stones-part-1
#10
REVIEW
Ben Van Cleynenbreugel, Özcan Kılıç, Murat Akand
The main aim in the treatment of renal stones is to clearance of the stones completely with the least morbidity. Parallel to the improvements in technology during recent years, new flexible ureterorenoscopes and effective lithotripters such as holmium laser have been developed, thus retrograde intrarenal surgery (RIRS) has become an efficient and safe option in the management of urinary system stone disease with a gradually increasing popularity. Therewithal, innovations in auxiliary equipment such as guide-wires, ureteral access sheath and stone baskets have made this procedure more effective...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28692204/the-new-generation-super-mini-percutaneous-nephrolithotomy-smp-system-a-step-by-step-guide
#11
Guohua Zeng, Wei Zhu, Yang Liu, Junhong Fan, Zhijian Zhao, Chao Cai
OBJECTIVE: To present our novel miniaturised endoscopic system and describe a step-by-step guide for successful implementation of the super-mini percutaneous nephrolithotomy (SMP). PATIENTS AND METHODS: The new-generation SMP endoscopic system consists of (i) a 40 000-pixel super-mini nephroscope with an 8.0-F outer diameter and 7.5-F inner diameter dismountable sheath, and (ii) a newly designed irrigation-suction sheath available in either 12 F or 14 F. The irrigation-suction sheath is a two-layered metal structure...
July 10, 2017: BJU International
https://www.readbyqxmd.com/read/28652901/the-efficacy-and-safety-of-laser-lithotripsy-in-pregnancy
#12
Amir Reza Abedi, Farzad Allameh, Mohammad Reza Razzaghi, Behrouz Fadavi, Hamidreza Qashqai, Saman Najafi, Arash Ranjbar, Manouchehr Bashirian
Introduction: The aim of our study was to assess the efficacy and safety of laser lithotripsy in pregnant patients. Methods: In this retrospective study, we reviewed the 15 pregnant women who have been treated for ureteral stones with semi-rigid ureteroscope and holmium laser at our center between Januarys 2007and April 2015. Results: The mean age of patients and mean gestational age was 29.3 years old 27.3 weeks respectively. Mean size of stones was 7.84 mm. Twelve patients had renal colic, and hematuria was found in 3 cases...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28608192/stone-technology-intracorporeal-lithotripters
#13
Kymora B Scotland, Tadeusz Kroczak, Kenneth T Pace, Ben H Chew
PURPOSE: Intracorporeal lithotripsy is becoming the most commonly used surgical method of stone treatment in Urology. The five major types of intracorporeal lithotripters are ultrasonic, ballistic, and combination lithotripters as well as laser and electrohydraulic lithotripters. The advantages and disadvantages of choosing each of these treatment modalities are reviewed. METHODS: Extensive review of literature was performed to identify the types of intracorporeal lithotripters...
September 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28560471/impact-of-laser-fiber-tip-cleavage-on-power-output-for-ureteroscopy-and-stone-treatment
#14
M Haddad, E Emiliani, Y Rouchausse, F Coste, L Berthe, S Doizi, S Buttice, B Somani, O Traxer
PURPOSE: Holmium:YAG laser is the most used laser for urolithiasis. Generally, we use metallic scissors to cut the fiber tip to restore its effectiveness. Many cleaving methods have been described to avoid fiber damage and to restore its greatest power to the fiber. There is a lack of information regarding which cleaving method should be used and its effect on the fiber. In order to compare these effects, we studied different cleavage methods in terms of power output and its effects on the fiber...
May 30, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28555349/hospital-admission-for-treatment-of-complications-after-extracorporeal-shock-wave-lithotripsy-for-renal-stones-a-study-of-risk-factors
#15
Ahmed R El-Nahas, Diaa-Eldin Taha, Mohamed M Elsaadany, Mohamed H Zahran, Mohamed Hassan, Khaled Z Sheir
The objective of this study was to determine risk factors of hospital admission for treatment of complications after extracorporeal shock wave lithotripsy (SWL). The electronic files and images of all patients who underwent SWL for treatment of renal stones between January 2011 and December 2015 were retrospectively reviewed. All patients underwent SWL with the same electromagnetic lithotripter (Dornier Lithotripot S). The data of those who needed hospital admission for treatment of complications within 30 days after SWL were compared with patients who did not require hospital admission...
May 29, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28492152/effect-of-stone-composition-on-the-outcomes-of-semi-rigid-ureteroscopy-using-holmium-yttrium-aluminum-garnet-laser-or-pneumatic-lithotripsy
#16
Mustafa Kadihasanoglu, Ugur Yucetas, Mehmet Gokhan Culha, Erkan Erkan, Mahmut Gokhan Toktas
OBJECTIVE: To compare the effectiveness of laser lithotripsy (LL) and pneumatic lithotripters (PL) in calcium oxalate (CaOx) and calcium phosphate (CaP) stones and assess whether these stone compositions affect the outcomes of LL and PL. STUDY DESIGN: Comparative, descriptive study. PLACE AND DURATION OF STUDY: Istanbul Training and Research Hospital, Turkey, from August 2010 to August 2015. METHODOLOGY: A total of 114 patients underwent ureteroscopy using LL and PL...
April 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28474533/ct-texture-analysis-of-ex-vivo-renal-stones-predicts-ease-of-fragmentation-with-shockwave-lithotripsy
#17
Helen W Cui, Wout Devlies, Samuel Ravenscroft, Hendrik Heers, Andrew J Freidin, Robin O Cleveland, Balaji Ganeshan, Benjamin W Turney
INTRODUCTION: Understanding the factors affecting success of extracorporeal shockwave lithotripsy (SWL) would improve informed decision-making on the most appropriate treatment modality for an individual patient. Although stone size and skin-to-stone distance do correlate with fragmentation efficacy, it has been shown that stone composition and architecture, as reflected by structural heterogeneity on CT, are also important factors. This study aims to determine if CT texture analysis (CTTA), a novel, nondestructive, and objective tool that generates statistical metrics reflecting stone heterogeneity, could have utility in predicting likelihood of SWL success...
July 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28457667/extracorporeal-shock-wave-lithotripsy-eswl-monotherapy-in-children-predictors-of-successful-outcome
#18
G Alsagheer, M S Abdel-Kader, A M Hasan, O Mahmoud, O Mohamed, A Fathi, M Abass, A Abolyosr
INTRODUCTION AND OBJECTIVES: Although extracorporeal shock wave lithotripsy (ESWL) is the first choice for pediatric renal calculi <2 cm, the success rate after the first session is low. This is in contrast to other minimally invasive procedures like percutanous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS), which have higher rates of success. Therefore, the present study sought to identify predictors of success after one session of ESWL. PATIENTS AND METHODS: A prospective study including 100 children with renal stone burden <2 cm who underwent ESWL at the present institution...
April 18, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28345515/treatment-of-salivary-stones-by-intraductal-pneumatic-lithotripsy-a-preliminary-presentation-of-the-stonebreaker-with-sterile-bag-covering
#19
P A Oddon, G Royer, N Graillon, F Marchal, C Chossegros, J M Foletti
INTRODUCTION: Sialendoscopy has changed the management of obstructive sialadenitis. Nowadays, minimally invasive techniques evolve to preserve salivary gland function. Intraductal lithotripsy allows stones fragmentation and retrieval without opening the salivary duct. We report our experience with the StoneBreaker (SB), a new lithotripter with improvement using a sterile bag that permits reuse of the SB without passing to sterilization. TECHNICAL NOTE: The non-sterilized SB was used into a sterile camera sleeve in 5 patients, 3 submandibular lithiases and 2 parotid lithiases...
April 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28340536/comparison-of-broad-vs-narrow-focal-width-lithotripter-fields
#20
Yifei Xing, Tony T Chen, Walter N Simmons, Georgy Sankin, Franklin H Cocks, Michael E Lipkin, Glenn M Preminger, Pei Zhong
OBJECTIVE: To investigate the impact of lithotripter focal width on stone fragmentation. MATERIALS AND METHODS: A modified reflector was used to reduce -6 dB beam size of the HM3 lithotripter, while increasing concomitantly peak pressure. Fragmentation in vitro was assessed with modified and original reflectors using BegoStone phantoms. A membrane holder was used to mimic lithotripsy in vivo, and a matrix holder was used to assess variations of fragmentation power in the focal plane of the lithotripter field...
May 2017: Journal of Endourology
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