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https://www.readbyqxmd.com/read/29048216/thermal-response-to-high-power-holmium-laser-lithotripsy
#1
Ali H Aldoukhi, Khurshid R Ghani, Timothy L Hall, William W Roberts
OBJECTIVES: The aim of this study was to investigate "caliceal" fluid temperature changes during holmium laser activation/lithotripsy using settings up to 40 W power output with different irrigation flow rates. MATERIALS AND METHODS: The experimental system consisted of a glass test tube (diameter 10 mm/length 75 mm) filled with deionized water, to mimic a calix. Real-time temperature was recorded using a thermocouple (Physitemp, NJ) positioned 5 mm from the bottom of the tube...
November 17, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29030074/a-survey-of-morcellator-preference-and-cost-comparison-of-the-lumenis%C3%A2-versacut%C3%A2-and-wolf-piranha-morcellators
#2
Marcelino E Rivera, James E Lingeman, Kevin Heinsimer, Nadya E York, Amy E Krambeck
OBJECTIVES: To evaluate OR costs associated with the two available morcellators in the United States in a matched cohort and to determine BPH surgeon's morcellator preference. MATERIALS AND METHODS: Patients from 2013, the last year our institution exclusively used the VersaCut™ device were matched 1:1 with the most recent patient cohort, utilizing the Wolf Piranha morcellator. Cost of morcellation including the expense of OR time and disposable instrument costs was calculated...
October 10, 2017: Urology
https://www.readbyqxmd.com/read/28994558/flexible-co2-laser-fiber-first-look-at-the-learning-curve-required-in-gynecological-laparoscopy-training
#3
Valeria S Vanni, Jessica Ottolina, Giorgio Candotti, Laura M Castellano, Iacopo Tandoi, Francesca DE Stefano, Giorgia Poppi, Stefano Ferrari, Massimo Candiani
BACKGROUND: The advent of flexible CO2 laser fiber to gynecology arena might represent a turning point in the use of laser energy on a large-scale basis in gynecological surgery. However, there might be some concerns regarding the degree of surgical skills required to use the flexible system. The purpose of our study is to evaluate whether flexible CO2 laser fiber is technically accessible. METHODS: Fourteen residents in Obstetrics and Gynecology without surgical experience attending laparoscopic box training with both flexible CO2 laser fiber and traditional line-of-sight CO2 laser using Lumenis AcuPulse Duo CO2 laser (Lumenis, Israel) were prospectively enrolled...
October 9, 2017: Minerva Ginecologica
https://www.readbyqxmd.com/read/28971251/rabbit-model-of-ocular-indirect-photodynamic-therapy-using-a-retinoblastoma-xenograft
#4
Jonathan W Kim, Bradley Jacobsen, Emily Zolfaghari, Angela Ferrario, Patricia Chevez-Barrios, Jesse L Berry, Diana K Lee, Grecia Rico, Ingy Madi, Narsing Rao, Kevin Stachelek, Lei-Chi Wang, Charles Gomer
PURPOSE: The goal of this project was to demonstrate the feasibility of coupling the indirect ophthalmoscope laser delivery system with the 690 nm wavelength diode laser used to perform photodynamic therapy (PDT) in the treatment of retinoblastoma. METHODS: For phase 1, a total of six pigmented rabbits were treated with the indirect laser delivery system. The laser source was provided by the Lumenis Opal 690 nm laser unit, delivered through a 810 nm Indirect ophthalmoscope headpiece and a hand-held 28-diopter indirect lens (1...
October 2, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28914602/initial-clinical-experience-with-a-modulated-holmium-laser-pulse-moses-technology-does-it-enhance-laser-lithotripsy-efficacy
#5
Gilad Amiel, Michael Mullerad, Jonatan R A Aguinaga, Tareq Aro, Alexander Kastin, Oleg Goldin, Alexander Kravtsov, Akram Assadi, Shadie Badaan, Gilad E Amiel
OBJECTIVE: The Lumenis(®) High-power Holmium Laser (120H) has a unique modulated pulse mode, Moses™ technology. Moses technology modulates the laser pulse to separate the water (vapor bubble), then deliver the remaining energy through the bubble. Proprietary laser fibers were designed for the Moses technology. Our aim was to compare stone lithotripsy with and without the Moses technology. METHODS: We designed a questionnaire for the urologist to fill immediately after each ureteroscopy in which the Lumenis 120H was used...
October 16, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28728505/in-vitro-comparison-of-stone-fragmentation-when-using-various-settings-with-modern-variable-pulse-holmium-lasers
#6
John Roger Bell, Kristina L Penniston, Stephen Y Nakada
INTRODUCTION AND OBJECTIVE: There are limited data regarding optimal laser and energy settings during stone fragmentation. We assessed effects on fragmentation using a variety of energy and frequency settings with two laser systems. METHODS: Artificial stones were created using BegoStone. A clear polyvinylchloride (PVC) tube with an inner diameter of 13 mm was closed at one end with a removable plug to create the in vitro ureteral and caliceal environments. The Lumenis Pulse 120H and the Cook Rhapsody H-30 holmium lasers were studied in the caliceal and ureteral models...
October 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28586247/holmium-laser-enucleation-of-the-prostate-after-prostatic-urethral-lift-surgery-feasibility-and-technical-considerations-from-a-multi-institutional-case-series
#7
Sean McAdams, Joel T Funk, Andrew F Navetta, Marawan M El Tayeb, Mitchell R Humphreys
INTRODUCTION AND OBJECTIVE: Ten percent of patients undergoing prostatic urethral lift (PUL) require repeat surgical treatment within 3 years. We describe the feasibility and considerations of performing holmium laser enucleation of the prostate (HoLEP) as a salvage therapy after previous PUL. METHODS: Men who had undergone HoLEP after PUL were retrospectively identified from three institutions with surgeons experienced in HoLEP. Subjects were characterized by age, time from PUL procedure (months) to HoLEP surgery, indication for retreatment, and pre-operative prostate volume by ultrasound...
August 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28532766/morcellation-efficiency-in-holmium-laser-enucleation-of-the-prostate-oscillating-morcellator-outperforms-reciprocating-morcellator-with-no-apparent-learning-curve
#8
Sean McAdams, Rafael Nunez-Nateras, Christopher J Martin, Stephen Cha, Mitchell R Humphreys
OBJECTIVE: To compare the morcellation efficiency of the Wolf Piranha oscillating morcellator with the Lumenis VersaCut reciprocating morcellator. MATERIALS AND METHODS: After institutional review board approval, we conducted a retrospective analysis of patients undergoing holmium laser enucleation of the prostate (HoLEP) for symptomatic benign prostatic hyperplasia. The first 41 cases of HoLEP with morcellation performed with the oscillating morcellator were matched by weight of resected tissue to 41 control patients from our historic data set who underwent morcellation with the reciprocating system...
August 2017: Urology
https://www.readbyqxmd.com/read/28340540/use-of-the-moses-technology-to-improve-holmium-laser-lithotripsy-outcomes-a-preclinical-study
#9
Mostafa M Elhilali, Shadie Badaan, Ahmed Ibrahim, Sero Andonian
OBJECTIVE: To evaluate in vitro and in vivo effects of Moses technology in Holmium laser and to compare it with the Regular mode in terms of lithotripsy efficiency and laser-tissue interactions. METHODS: The Lumenis(®) Pulse™ P120H holmium laser system together with Moses D/F/L fibers were used to compare the Regular mode with the Moses modes in stone retropulsion by using a high-speed camera, and stone ablation efficiency. In addition, a porcine ureteroscopy model was used to assess stone fragmentation and dusting as well as laser-tissue interaction with the ureteral wall...
June 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28204988/outcome-of-solid-state-532%C3%A2-nm-green-laser-in-high-risk-retinopathy-of-prematurity-at-a-tertiary-care-centre-in-india
#10
Kanika Chhabra, Prempal Kaur, Karamjit Singh, Anand Aggarwal, Dharamvir Chalia
PURPOSE: The purpose of this study was to analyse the outcome of solid-state green laser in high-risk retinopathy of prematurity (ROP) at a tertiary centre in India. METHODS: Fifty-nine eyes of 30 infants with high-risk ROP were recruited in this prospective, interventional study. High-risk ROP included prethreshold type 1 ROP and APROP. Laser photocoagulation was performed with 532 nm solid-state green laser (Novus Spectra, Lumenis, GmbH, Germany). RESULTS: Of the 30 infants, 18 were males (60%) and 12 were females (40%)...
February 15, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28138214/racial-differences-in-selective-laser-trabeculoplasty-efficacy
#11
Emil Goosen, Kate Coleman, Linda Visser, William E Sponsel
AIM: Sub-Saharan Africa has a population of 1 billion, with one ophthalmologist per million people. Basic ophthalmic support services are virtually absent for all but a few urban populations. Minimally invasive laser treatment may help. This study reports our initial experience using selective laser trabeculoplasty (SLT) in a mixed-racial population of adult glaucoma patients in Durban, South Africa. STUDY DESIGN: Institution Review Board approved the 5-year chart review...
January 2017: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/28017884/a-new-laser-platform-for-holmium-laser-enucleation-of-the-prostate-does-the-lumenis-pulse-120h-laser-platform-improve-enucleation-efficiency
#12
Karen L Stern, Sean B McAdams, Stephen S Cha, Haidar M Abdul-Muhsin, Mitchell R Humphreys
OBJECTIVE: To determine whether the recently introduced Lumenis Pulse 120H laser platform, which offers a dual-pedal footswitch and preset energy modes to easily switch among laser settings, facilitates a more efficient process in holmium laser enucleation of the prostate (HoLEP) for surgical treatment of benign prostatic hyperplasia. PATIENTS AND METHODS: Patients at a single institution who underwent HoLEP with the new Lumenis Pulse 120H laser platform were matched 1:2 with patients who underwent the procedure with the previously used 100-watt VersaPulse single-pedal laser platform...
December 23, 2016: Urology
https://www.readbyqxmd.com/read/27964825/carbon-dioxide-laser-treatment-of-penile-intraepithelial-neoplasia
#13
Abdullah Zreik, Matthew Rewhorn, Ross Vint, Rehan Khan, David Hendry
INTRODUCTION & OBJECTIVE: The non-invasive nature of penile intraepithelial neoplasia (PeIN) allows for curative penile sparing therapy and is recommended, in their guidelines, by the European Association of Urology (EAU). Treatment options include topical chemotherapy, immunotherapy, laser treatment, photodynamic therapy and surgical excision. Our primary aim was to evaluate the outcome of carbon dioxide (CO2) laser treatment of penile intraepithelial neoplasia. METHODS: A retrospective review of 47 patients who underwent CO2 laser ablation of PeIN, from May 2008 to June 2015, in our tertiary referral centre was performed...
December 7, 2016: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/27794165/a-novel-transcutaneous-non-focused-ultrasound-energy-delivering-device-is-able-to-induce-subcutaneous-adipose-tissue-destruction-in-an-animal-model
#14
Assi Levi, Dan Ben Amitai, Moshe Lapidoth
BACKGROUND AND OBJECTIVES: The understanding that adipocytes are greatly influenced by thermal changes combined with the advancement of non-invasive ultrasound technologies have led to the application of ultrasound as an energy source to induce thermal fat destruction. While application of high intensity focused, ultrasound energy have been widely explored, there is far less information regarding the effects of non-focused ultrasound on adipose tissue. The purpose of this study was to characterize the effects of a novel transcutaneous, multi-elements, non-focused ultrasound energy regimen in an animal model, as a proof-of-concept of its potential to treat non-invasive subcutaneous benign tumors...
October 29, 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27766387/learning-curves-and-perioperative-outcomes-after-endoscopic-enucleation-of-the-prostate-a-comparison-between-greenlight-532-nm-and-holmium-lasers
#15
Benoit Peyronnet, Grégoire Robert, Vincent Comat, Morgan Rouprêt, Fernando Gomez-Sancha, Jean-Nicolas Cornu, Vincent Misrai
PURPOSE: To compare the learning curves, perioperative and early functional outcomes after HoLEP and GreenLEP. METHODS: Data from the first 100 consecutive cases treated by GreenLEP and HoLEP by two surgeons were prospectively collected from dedicated databases and analysed retrospectively. En-bloc GreenLEP and two-lobar HoLEP enucleations were conducted using the GreenLight HPS™ 2090 laser and Lumenis™ holmium laser. Patients' characteristics, perioperative outcomes and functional outcomes after 1, 3 and 6 months were compared between groups...
June 2017: World Journal of Urology
https://www.readbyqxmd.com/read/27759650/a-new-co2-laser-technique-for-the-treatment-of-pediatric-hypertrophic-burn-scars-an-observational-study
#16
Tomasz Żądkowski, Paweł Nachulewicz, Maciej Mazgaj, Magdalena Woźniak, Czesław Cielecki, Andrzej Paweł Wieczorek, Iwona Beń-Skowronek
Treatment of hypertrophic scars arising as a result of thermal burns in children is still a big problem. The results of the treatment are not satisfactory for patients and parents, and new methods of treatment are still investigated.We present the use of one of the most modern carbon dioxide (CO2) lasers (Lumenis Encore laser equipped with a Synergistic Coagulation and Ablation for Advanced Resurfacing module) in the treatment of hypertrophic scars in children after burns.From March to April of 2013, a group of 47 patients aged 6 to 16 years underwent 57 laser surgery treatments...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27758119/a-usability-comparison-of-laser-suction-handpieces-for-percutaneous-nephrolithotomy
#17
COMPARATIVE STUDY
Casey A Dauw, Michael S Borofsky, Nadya York, James E Lingeman
INTRODUCTION: The holmium laser has revolutionized the practice of minimally invasive endoscopy for kidney stones. Recently, a novel, rigid handpiece for use in percutaneous nephrolithotomy (PCNL) that couples the holmium laser with suction has been developed. To date, limited data exist regarding the usability and ergonomics of such treatment systems. We thus sought to compare surgeon-rated usability with three different suction laser handpieces in a porcine model. MATERIALS AND METHODS: We performed bilateral reverse PCNL on four female domestic farm pigs...
November 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27519176/dermal-remodeling-of-burn-scar-by-fractional-co2-laser
#18
Sang-Jun Lee, Dong-Hye Suh, Ji Min Lee, Kye-Yong Song, Hwa Jung Ryu
BACKGROUND: Ablative CO2 fractional lasers have recently been introduced for burn scar treatment because of pronounced clinical outcomes with fewer treatment sessions than nonablative fractional laser. OBJECTIVE: This study was conducted to observe clinical as well as histologic changes of burn scars after treatment with CO2 fractional laser. MATERIALS AND METHODS: Eleven patients (one female and 10 males, aged 31-59 years) with skin phototypes III to V with burn scars received 10 sessions of fractional CO2 laser treatments (UltraPulse(®) Encore; Lumenis, Santa Clara, CA, USA) over an average 5-week interval...
October 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/27264051/mini-percutaneous-nephrolithotomy-with-high-power-holmium-yag-laser-in-pediatric-patients-with-staghorn-and-complex-calculi
#19
Anna Bujons, Félix Millán, Clara Centeno, Esteban Emiliani, Francisco Sánchez Martín, Oriol Angerri, Jorge Caffaratti, Humberto Villavicencio
INTRODUCTION: Shock wave lithotripsy (SWL) is the treatment of choice for most cases of renal lithiasis in children. Some cases, however, are refractory to SWL and may be associated with anatomic and metabolic changes or a large stone burden. In these circumstances, mini-percutaneous nephrolithotomy (mini-PCNL) is an option. OBJECTIVE: The aim was to assess the safety and efficacy of high-power holmium YAG (Ho:YAG) laser in mini-PCNL for staghorn calculi. PATIENTS AND METHODS: The clinical records relating to 35 mini-PCNLs (Table) performed between January 2008 and December 2012 in 33 patients (27 boys and 6 girls; mean age 7 years, range 2-18 years) were retrospectively reviewed...
August 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/26863789/-colposcopy-assisted-laser-microsurgery-for-cervical-pathology
#20
I Karagyozov
AIM: A short presentation of the method--laser microsurgery and analysis of the achieved results. MATERIALS AND METHODS: 631 laser procedures were done for 3 years (2008- 2011) at Tokuda hospital outpatient department. These procedures were divided as follows: 607 laser vaporizations and 24 laser conisations. Indications for vaporizations were: CINI-114 patients, CIN II--26 patients, CIN III (without invasion of the cervical os) -26 patients and 422 patients were done laser vaporization for different reasons-papiloma, leucoplakia, atypical vessels and so on...
2015: Akusherstvo i Ginekologii︠a︡
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