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https://www.readbyqxmd.com/read/28101654/cell-viability-and-shock-wave-amplitudes-in-the-endothelium-of-porcine-cornea-exposed-to-ultrashort-laser-pulses
#1
Syed Asad Hussain, Carles Milián, Caroline Crotti, Laura Kowalczuk, Fatima Alahyane, Zacaria Essaïdi, Arnaud Couairon, Marie-Claire Schanne-Klein, Karsten Plamann
PURPOSE: Some forms of keratoplasty assisted by ultrashort-pulse lasers require performing laser cuts close to the endothelium, which requires the knowledge of "safe" values concerning incision depth and pulse energy preserving endothelial cell viability. Our study aims to determine the thresholds for cell death in porcine corneas exposed to ultrashort laser pulses, in terms of laser pulse energy and nearness of the impacts to the endothelium. METHODS: Using a laboratory laser set-up, lamellar cuts were induced while varying pulse energies and distances from the endothelium...
January 18, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28098194/new-hydrate-formation-methods-in-a-liquid-gas-medium
#2
A A Chernov, A A Pil'nik, D S Elistratov, I V Mezentsev, A V Meleshkin, M V Bartashevich, M G Vlasenko
Conceptually new methods of hydrate formation are proposed. The first one is based on the shock wave impact on a water-bubble medium. It is shown that the hydrate formation rate in this process is typically very high. A gas hydrate of carbon dioxide was produced. The process was experimentally studied using various initial conditions, as well as different external action magnitudes. The obtained experimental data are in good agreement with the proposed model. Other methods are based on the process of boiling liquefied gas in an enclosed volume of water (explosive boiling of a hydrating agent and the organization of cyclic boiling-condensation process)...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098121/perspectives-on-hypertension-outcomes-after-single-stage-clearance-of-a-complete-staghorn-renal-calculus
#3
Ranjit Chaudhary, Kulwant Singh, Chirag S Dausage, Nidhi Jain
A 55-year-old male presented, in June 2013, with left flank pain. Investigations revealed a complete staghorn stone. He had undergone two sittings of extracorporeal shock wave lithotripsy (ESWL) in 2008 for left renal stone. One year subsequent to this, he was diagnosed with hypertension and diabetes. The management of complete staghorn stones in a single sitting is a difficult proposition. Percutaneous nephrolithotomy (PCNL) is the gold standard to manage such stones. The patient was subjected to PCNL, and complete clearance was achieved in one sitting...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28095709/worldwide-trends-of-urinary-stone-disease-treatment-over-the-last-two-decades-a-systematic-review
#4
Robert Geraghty, Patrick Jones, Bhaskar K Somani
INTRODUCTION: Numerous studies have reported on regional or national trends of stone disease treatment. However, no paper has yet examined the global trends of intervention for stone disease. METHODS AND MATERIALS: A systematic review of papers from 2004 to September 2016 for all English language articles reporting on trends of surgical treatment of stone disease was performed. Authors were contacted in the case of data not being clear. If the authors did not reply, data was estimated from graphs or tables...
January 17, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28093636/non-surgical-treatment-of-pubic-overload-and-groin-pain-in-amateur-football-players-a-prospective-double-blinded-randomised-controlled-study
#5
M Schöberl, L Prantl, O Loose, J Zellner, P Angele, F Zeman, M Spreitzer, M Nerlich, W Krutsch
PURPOSE: The incidence of groin pain in athletes is steadily increasing. Symptomatic pubic overload with groin pain and aseptic osteitis pubis represent well-known and frequently misdiagnosed overuse injuries in athletes. This study investigated the benefits of standardised non-surgical treatment for swift return-to-football. METHODS: In a prospective double-blinded controlled study, 143 amateur football players with groin pain as well as radiological signs and clinical symptoms of pubic overload were analysed for 1 year...
January 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28091930/non-equilibrium-molecular-dynamics-simulations-of-the-transient-ludwig-soret-effect-in-a-binary-lennard-jones-spline-mixture
#6
Bjørn Hafskjold
A binary isotope mixture of Lennard-Jones/spline particles at equilibrium was perturbed by a sudden change in the system's boundary temperatures. The system's response was determined by non-equilibrium molecular dynamics (NEMD). Three transient processes were studied: 1) The propagation of a pressure (shock) wave, 2) heat diffusivity and conduction, and 3) thermal diffusion (the Ludwig-Soret effect). These three processes occur at different time scales, which makes it possible to separate them in one single NEMD run...
January 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28079681/internal-jugular-vein-compression-a-novel-approach-to-mitigate-blast-induced-hearing-injury
#7
Brian Sindelar, Michael Shinners, Sydney Sherman, Kevin Novak, Kristine Erickson, Vimal Patel, Paul Kubilis, David Smith, John Finan, Julian E Bailes
HYPOTHESIS: Internal jugular vein (IJV) compression before blast injury will lead to reduced risk of traumatic hearing injury following exposure to a blast injury. BACKGROUND: IJV compression and its effects on not only intracranial, but also intracochlear pressure may potentiate blast induced hearing injury, therefore, precluding its use as a prophylactic therapy for blast induced traumatic brain injury. METHODS: Twenty Sprague Dawley rats were exposed to a 17...
January 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28078874/tendonitis-of-the-rotator-cuff-treated-with-extracorporeal-shock-wave-therapy-radiographic-monitoring-to-identify-prognostic-factors-for-disintegration
#8
A Notarnicola, L Moretti, G Maccagnano, S Tafuri, B Moretti
Extracorporeal shock wave therapy (ESWT) is widely used for calcific tendonitis of the shoulder. The initial rationale for this therapy was to break the calcification, but this effect does not always occur. To date, we do not know how calcifications evolve or why they may be less responsive to the action of the shock waves. One hundred and seventy-four shoulders with calcific tendinitis were prospectively evaluated before and after ESWT, using the radiographic classifications according to Gartner and Heyer, to Bosworth and to Molè...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078237/low-energy-shock-wave-therapy-ameliorates-erectile-dysfunction-in-a-pelvic-neurovascular-injuries-rat-model
#9
EDITORIAL
Delphine Behr-Roussel, François Giuliano
No abstract text is available yet for this article.
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28078229/commentary-to-low-energy-shock-wave-therapy-ameliorates-erectile-dysfunction-in-a-pelvic-neurovascular-injuries-rat-model-published-in-j-sex-med-2016-13-22-32-by-li-h-matheu-p-sun-f-et-al
#10
COMMENT
https://www.readbyqxmd.com/read/28074231/development-of-a-novel-magnetic-resonance-imaging-acquisition-and-analysis-workflow-for-the-quantification-of-shock-wave-lithotripsy-induced-renal-hemorrhagic-injury
#11
Rajash K Handa, Paul R Territo, Philip M Blomgren, Scott A Persohn, Chen Lin, Cynthia D Johnson, Lei Jiang, Bret A Connors, Gary D Hutchins
The current accepted standard for quantifying shock wave lithotripsy (SWL)-induced tissue damage is based on morphometric detection of renal hemorrhage in serial tissue sections from fixed kidneys. This methodology is time and labor intensive and is tissue destructive. We have developed a non-destructive magnetic resonance imaging (MRI) method that permits rapid assessment of SWL-induced hemorrhagic lesion volumes in post-mortem kidneys using native tissue contrast to reduce cycle time. Kidneys of anesthetized pigs were targeted with shock waves using the Dornier Compact S lithotripter...
January 10, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28073210/the-importance-of-citrates-in-treatment-and-prophylaxis-of-calcium-oxalate-urinary-stones
#12
Michele Barbera, Andreas Tsirgiotis, Mauro Barbera, Quintino Paola
About 10% of the people is the subject of an episode of kidney stones during their lifetime, about 70% of these people undergoes relapses. About 80% of the urinary stones contains calcium, of wich 80% is formed of calcium oxalate, in pure form or associated with calcium phosphate. Therefore we can saythat in most cases (about 65%) the urinary stones are composedof calcium oxalate. Use of supplements of potassium citrate and magnesium citrate can help in the prevention of kidney stones of calcium oxalate, but mostly they can be used in the days before a shockwaves lithotripsy treatment to make the stones more fragile to the effect of the shock waves...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28073204/who-apparently-more-spends-in-reality-spends-less-spending-a-little-more-for-the-rental-of-the-extracorporeal-lithotripter-can-save-a-lot-about-the-days-of-hospitalization-for-urinary-stones
#13
Giuseppe Albino, Francesco Albergo
OBJECTIVE: The right to health (according to the Article 32 of the Italian Republic Constitution) is financially conditioned; for this reason the National Health System (NHS) has the objective of rationalize health expenditure according to the criteria of efficiency, effectiveness and economy. This paper is an example of rationalization concerning the extracorporeal shock wave lithotripsy (ESWL). MATERIALS AND METHODS: Hospital admissions for urinary stones were taken into account...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28072572/a-3d-time-reversal-cavity-for-the-focusing-of-high-intensity-ultrasound-pulses-over-a-large-volume
#14
J Robin, B Arnal, M Tanter, M Pernot
Shock wave ultrasound therapy techniques, increasingly used for non-invasive surgery, require extremely high pressure amplitudes in precise focal spots, and large high-power transducers arranged on a spherical shell are usually used to achieve that. This solution allows limited steering of the beam around the geometrical focus of the device at the cost of a large number of transducer elements, and the treatment of large and moving organs like the heart is challenging or impossible. This paper validates numerically and experimentally the possibility of using a time reversal cavity (TRC) for the same purpose...
February 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28070668/what-happens-to-asymptomatic-lower-pole-kidney-stones-smaller-than-10%C3%A2-mm-in-children-during-watchful-waiting
#15
Onur Telli, Nurullah Hamidi, Uygar Bagci, Arif Demirbas, Ahmet Metin Hascicek, Tarkan Soygur, Berk Burgu
BACKGROUND: The optimal management of lower pole kidney (LPK) stones in children is controversial. The aim of this study was to determine the outcomes of children with asymptomatic isolated LPK stones smaller than 10 mm during follow-up. METHODS: A total of 242 patients with 284 stones presenting at our institution between June 2004 and December 2014 with an asymptomatic, single LPK stone with a diameter of <10 mm were enrolled in the study. All children were assigned to receive first-line therapy and then categorized according to the need for medical intervention...
January 9, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28069224/a-method-for-water-well-regeneration-based-on-shock-waves-and-ultrasound
#16
Anna V Abramova, Vladimir O Abramov, Vadim M Bayazitov, Roman V Nikonov
The regeneration of water wells is an urgent problem nowadays, when drilling of new wells becomes more and more expensive. Formation damage leads to a reduction of the formation's permeability and/or pore volume which in turn inhibits the ability of the water to flow from the reservoir formation into the wellbore. A new technology that uses high-power ultrasound to remove formation damage of water wells has been developed. The effectiveness of regeneration of wells can be enhanced if ultrasound and shockwaves are used during the same treatment...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28068364/meta-analysis-of-stenting-versus-non-stenting-for-the-treatment-of-ureteral-stones
#17
Hai Wang, Libo Man, Guizhong Li, Guanglin Huang, Ning Liu, Jianwei Wang
BACKGROUND AND AIM: Ureteroscopic lithotripsy (URL) and extracorporeal shock wave lithotripsy (ESWL) are two widely used methods for the treatment of ureteral stones. The need for ureteral stenting during these procedures is controversial. In this meta-analysis, we evaluated the benefits and disadvantages of ureteral stents for the treatment of ureteral stones. METHODS: Databases including PubMed, Embase and Cochrane library were selected for systematic review of randomized controlled trials (RCTs) comparing outcomes with or without stenting during URL and ESWL...
2017: PloS One
https://www.readbyqxmd.com/read/28057983/role-of-extracorporeal-shock-wave-therapy-in-management-of-peyronie-s-disease-a-preliminary-report
#18
Rajendra Kashinath Shimpi, Ravi Jineshkumar Jain
INTRODUCTION: Peyronie's Disease (PD) is a disease causing psycho social trauma to the patient. Multiple treatment options are available with variable results. Extra Corporeal Shock Wave Therapy (ESWT) is a new insight into the non invasive modality of management. It focuses on the mechanism of inducing angiogenesis in the penile cavernous tissue. MATERIALS AND METHODS: The aim of the study is to determine the role of ESWT in the management of PD. The objectives include demonstrating the improvement in mean International Index of Erectile Function Score (IIEFS), improvement in pain score by Visual Analogue Scale (VAS), change in cavernosal artery flow on colour penile Doppler, reduction in plaque size, and improvement in penile curvature degree after the therapy...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28054555/experimental-investigation-on-the-characteristics-of-supersonic-fuel-spray-and-configurations-of-induced-shock-waves
#19
Yong Wang, Yu-Song Yu, Guo-Xiu Li, Tao-Ming Jia
The macro characteristics and configurations of induced shock waves of the supersonic sprays are investigated by experimental methods. Visualization study of spray shape is carried out with the high-speed camera. The macro characteristics including spray tip penetration, velocity of spray tip and spray angle are analyzed. The configurations of shock waves are investigated by Schlieren technique. For supersonic sprays, the concept of spray front angle is presented. Effects of Mach number of spray on the spray front angle are investigated...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28052698/variation-coefficient-of-stone-density-a-novel-predictor-of-the-outcome-of-extracorporeal-shockwave-lithotripsy
#20
Shimpei Yamashita, Yasuo Kohjimoto, Takashi Iguchi, Satoshi Nishizawa, Akinori Iba, Kazuro Kikkawa, Isao Hara
OBJECTIVES: Although previous studies have indicated that stone heterogeneity can affect shock wave lithotripsy outcomes, there is no established measurement of stone heterogeneity on computed tomography imagery. We investigated whether variation coefficient of stone density can predict shock wave success. MATERIALS AND METHODS: We conducted a retrospective review of 245 patients with urinary calculi who had undergone shock wave lithotripsy. We compared the predictive powers of treatment success between variation coefficient of stone density and other parameters associated with computed tomography attenuation...
January 4, 2017: Journal of Endourology
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