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https://www.readbyqxmd.com/read/29774824/technique-of-percutaneous-nephrolithotomy
#1
Ahmed Ibrahim, Daniel Wollin, Glenn Preminger, Sero Andonian
According to the latest American and European Urological Association guidelines, percutaneous nephrolithotomy (PNL) is the current gold standard treatment for patients presenting with symptomatic large or complex renal stones ≥2 cm. This review chapter and accompanying videos will review the latest literature on indications, preoperative preparations, different patient positions, in addition to step by step explanations for the technique of PNL. Postoperative care and troubleshooting tips are provided. Furthermore, latest reported outcomes are reviewed...
May 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29750093/laser-phototherapy-induces-angiogenesis-in-the-periodontal-tissue-after-delayed-tooth-replantation-in-rats
#2
Felipe-de Souza Matos, Fernanda-de Jesus Godolphim, Ricardo-Luiz-Cavalcanti Albuquerque-Júnior, Luiz-Renato Paranhos, Sigmar-de Mello Rode, Cláudio-Antonio-Talge Carvalho, Maria-Amália-Gonzaga Ribeiro
Background: Laser phototherapy (LPT) has been suggested as a new therapeutic tool to improve the repair of replanted teeth. However, its effects and mechanism of action are not yet completely understood. Objectives: This study evaluated histologically the effect of laser phototherapy (LPT) λ808 and λ660 nm on angiogenesis in the periodontal tissue of replanted teeth in rats. Material and Methods: Twenty maxillary right incisors were extracted from twenty Wistar rats and randomly assigned to four groups (n = 5): PN - teeth were stored in paper napkin for 45 min; WM - teeth were immersed in 20 ml of UHT whole cow milk for 45 min; PNL and WML - teeth received the same treatment described for PN and WM, respectively, plus LPT at λ808 and λ660 nm...
April 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29719461/qualitative-and-quantitative-analysis-of-the-saponins-in-panax-notoginseng-leaves-using-ultra-performance-liquid-chromatography-coupled-with-time-of-flight-tandem-mass-spectrometry-and-high-performance-liquid-chromatography-coupled-with-uv-detector
#3
Fang Liu, Ni Ma, Chengwei He, Yuanjia Hu, Peng Li, Meiwan Chen, Huanxing Su, Jian-Bo Wan
Background: Panax notoginseng leaves (PNL) exhibit extensive activities, but few analytical methods have been established to exclusively determine the dammarane triterpene saponins in PNL. Methods: Ultra-performance liquid chromatography coupled with time-of-flight mass spectrometry (UPLC/Q-TOF MS) and HPLC-UV methods were developed for the qualitative and quantitative analysis of ginsenosides in PNL, respectively. Results: Extraction conditions, including solvents and extraction methods, were optimized, which showed that ginsenosides Rc and Rb3, the main components of PNL, are transformed to notoginsenosides Fe and Fd, respectively, in the presence of water, by removing a glucose residue from position C-3 via possible enzymatic hydrolysis...
April 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29681045/flexible-ureterorenoscopy-versus-mini-percutaneous-nephrolithotomy-for-the-treatment-of-renal-stones
#4
Giray Ergin, Mustafa Kirac, Burak Kopru, Turgay Ebiloglu, Hasan Biri
PURPOSE: To compare the pain status and stone free rates of flexible ureterorenoscopy (F-URS) versus mini-percutaneousnephrolithotomy (mini-PNL) for the treatment of 1-to 2-cm renal stones. MATERIALS AND METHODS: This study was retrospectively designed with match paired method. Between January 2013 and December 2016, 387 patients underwent stone surgery for renal stones, 45 patients underwent FURS and 45 patients underwent mini-PNL. 90 patients were divided into two groups according to the surgical procedures...
April 22, 2018: Urology Journal
https://www.readbyqxmd.com/read/29625868/combined-use-of-flexible-ureteroscopic-lithotripsy-with-micro-percutaneous-nephrolithotomy-in-pediatric-multiple-kidney-stones
#5
Jun Li, Wenying Wang, Yuan Du, Ye Tian
BACKGROUND: We investigated the clinical value of treating pediatric multiple kidney stones with extensive distribution using flexible ureteroscopic lithotripsy (FUL) combined with micro-percutaneous nephrolithotomy (micro-PNL). PATIENTS AND METHODS: In total, 21 pediatric patients with multiple renal calculi between May 2016 and June 2017 received FUL combined with micro-PNL. The group included 13 boys and eight girls; the patients' mean age was 3.8 years (range 1-8 years)...
March 28, 2018: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29615986/whole-genome-sequencing-and-multiplex-qpcr-methods-to-identify-campylobacter-jejuni-encoding-cst-ii-or-cst-iii-sialyltransferase
#6
Jason M Neal-McKinney, Kun C Liu, Karen C Jinneman, Wen-Hsin Wu, Daniel H Rice
Campylobacter jejuni causes more than 2 million cases of gastroenteritis annually in the United States, and is also linked to the autoimmune sequelae Guillan-Barre syndrome (GBS). GBS often results in flaccid paralysis, as the myelin sheaths of nerve cells are degraded by the adaptive immune response. Certain strains of C. jejuni modify their lipooligosaccharide (LOS) with the addition of neuraminic acid, resulting in LOS moieties that are structurally similar to gangliosides present on nerve cells. This can trigger GBS in a susceptible host, as antibodies generated against C...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29597836/validation-of-a-novel-cost-effective-easy-to-produce-and-durable-in-vitro-model-for-kidney-puncture-and-pnl-simulation
#7
Jan Thorsten Klein, Jens Rassweiler, Marie-Claire Charlotte Rassweiler-Seyfried
INTRODUCTION: Nephrolithiasis is one of the most common diseases in urology. According to the EAU Guidelines, a percutaneous nephrolitholapaxy (PNL) is recommended when treating a kidney stone >2 cm. Nowadays PNL is performed even for smaller stones (<1 cm) using miniaturized instruments. The most challenging part of any PNL is the puncture of the planned site. PNL-novice surgeons need to practice this step in a safe environment with an ideal training model. We developed and evaluated a new, easy to produce, in-vitro model for the training of the freehand puncture of the kidney...
March 29, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29593466/using-the-modified-clavien-grading-system-to-classify-complications-of-percutaneous-nephrolithotomy
#8
Aditya K Singh, Pushpendra K Shukla, Sartaj W Khan, Vazir S Rathee, Udai Shankar Dwivedi, Sameer Trivedi
Purpose: A modified Clavien classification system has been proposed to grade perioperative complications. We share our experience in grading the complications of percutaneous nephrolithotomy (PNL), according to this new classification. Methods: A total of 809 PNLs performed between 2010 and 2014 were reviewed retrospectively. The modified Clavien classification system, which classifies the perioperative complications into 5 grades, was applied. Grade wise comparison of complications between the patients with simple and complex calculi was done...
February 2018: Current Urology
https://www.readbyqxmd.com/read/29550897/asymptomatic-renal-stones-to-treat-or-not-to-treat
#9
REVIEW
Necole M Streeper
PURPOSE OF REVIEW: There are no current guidelines on the optimal management of asymptomatic renal stones. This review summarizes the current literature, focusing on more recent studies that have been done to grow the body of evidence on this topic. RECENT FINDINGS: Recent studies have found that stone size is a significant predictor of need for future surgical intervention, with > 7 mm for pediatric population and > 4 mm for residual fragments after both PNL and ureteroscopy (URS)...
March 17, 2018: Current Urology Reports
https://www.readbyqxmd.com/read/29549382/mini-vs-standard-percutaneous-nephrolithotomy-for-renal-stones-a-comparative-study
#10
Mohammed S ElSheemy, Akram A Elmarakbi, Mohammed Hytham, Hamdy Ibrahim, Sanjay Khadgi, Ahmed M Al-Kandari
To compare the outcome of mini-percutaneous nephrolithotomy (Mini-PNL) versus standard-PNL for renal stones. Retrospective study was performed between March 2010 and May 2013 for patients treated by Mini-PNL or standard-PNL through 18 and 30 Fr tracts, respectively, using pneumatic lithotripsy. Semirigid ureteroscope (8.5/11.5 Fr) was used for Mini-PNL and 24 Fr nephroscope for standard-PNL. Both groups were compared in stone free rate(SFR), complications and operative time using Student-t, Mann-Whitney, Chi square or Fisher's exact tests as appropriate in addition to logistic regression analysis...
March 16, 2018: Urolithiasis
https://www.readbyqxmd.com/read/29511585/the-outcome-of-percutaneous-nephrolithotomy-on-%C3%A2-50-mm-staghorn-and-multiple-calyceal-stones
#11
Engin Kaya, Turgay Ebiloğlu, Murat Zor, Serdar Yalçın, Adem Emrah Coğuplugil, Selahattin Bedir
Objective: To determine the success rate of percutaneous nephrolithotomy (PNL) in kidney stones over 50 milimeters. Material and methods: Twenty-four patients with a renal stone size of >50 mm between January 2007 and December 2016 were enrolled. Stone-free and complication rates were investigated. Results: Twenty-one (87.5%) patients were male and 3 (12.5%) were female. Fifteen (62.5%) stones were located in the right, and 9 (37.5%) in the left kidney...
March 2018: Turkish Journal of Urology
https://www.readbyqxmd.com/read/29510532/factors-affecting-the-success-rate-of-percutaneous-nephrolithotomy-in-paediatric-patients
#12
Hikmat Jabrayilov, Murat Yavuz Koparal, Serhat Gürocak, Bora Küpeli, Mustafa Özgür Tan
In this study, we aimed to determine factors affecting the success rate of percutaneous nephrolithotomy (PNL) in children. The series consisted of 41 consecutive children operated on by the same surgical team for renal calculi with PNL between June 2002 and May 2015 in our institution. A single calyx or pelvic stone was described as simple, while calculi located in more than one location (calyx and pelvis or more than one calices) or staghorn stones were described as complex. The procedure was deemed successful if the patient was completely stone-free (SF) or had residual fragments <4 mm...
March 4, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29503872/outpatient-tubeless-percutaneous-nephrolithotomy-performed-in-a-freestanding-ambulatory-surgery-center
#13
Joel E Abbott, Julio G Davalos
Background: Percutaneous nephrolithotomy (PNL) is a procedure that has traditionally been performed in an inpatient or hospital setting. Many surgical procedures have evolved over time from an inpatient/hospital setting to outpatient procedures performed in surgical centers. Outpatient PNL has become an accepted standard in select patients, but to date, the procedure has not been performed in an outpatient surgical center. Case Presentation: We describe our initial experience managing large renal stone burden with PNL performed completely outpatient in a freestanding ambulatory surgery center...
2018: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/29496083/mammography-image-quality-and-evidence-based-practice-analysis-of-the-demonstration-of-the-inframammary-angle-in-the-digital-setting
#14
Kelly Spuur, Jodi Webb, Ann Poulos, Sharon Nielsen, Wayne Robinson
AIM: The aim of this study is to determine the clinical rates of the demonstration of the inframammary angle (IMA) on the mediolateral oblique (MLO) view of the breast on digital mammograms and to compare the outcomes with current accreditation standards for compliance. Relationships between the IMA, age, the posterior nipple line (PNL) and compressed breast thickness will be identified and the study outcomes validated using appropriate analyses of inter-reader and inter-rater reliability and variability...
March 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29469849/highly-thermal-stable-heterodyne-interferometer-with-minimized-periodic-nonlinearity
#15
Haijin Fu, Guolong Wu, Pengcheng Hu, Ruidong Ji, Jiubin Tan, Xuemei Ding
Heterodyne interferometers suffer from thermal drift of optics (TDO), which may introduce error even up to several micrometers. In this paper, we propose a symmetric heterodyne interferometer with spatially separated beams, which realizes completely balanced optical paths between probe and reference beams and simultaneously avoids the optical mixing, and thereby is theoretically capable of eliminating TDO and the periodic nonlinearity (PNL). To validate the performance of the proposed interferometer, first a special experimental setup is constructed, with which the TDO test can be conducted in vacuum, and the result shows that a thermal coefficient of 1...
February 20, 2018: Applied Optics
https://www.readbyqxmd.com/read/29466870/how-reliable-is-the-intraoperative-assessment-of-residual-fragments-during-percutaneous-nephrolithotomy-a-prospective-study
#16
Amihay Nevo, Ronen Holland, Eran Schreter, Ron Gilad, Jack Baniel, Aenov Cohen, David A Lifshitz
OBJECTIVES: To determine the accuracy of the surgeon's impression as to the stone-free rate at the end of percutaneous nephrolithotomy (PCNL), and to evaluate predictors for inaccurate estimation. MATERIALS AND METHODS: A prospective study conducted between 2010 and 2015. Surgeon's impression, categorized as "insignificant residual fragments (RFs)" (<4 mm) or "significant RF" (>4 mm), was recorded at the end of PCNL, and was compared with postoperative imaging results, using CT or a combination of US and kidney, ureter, and bladder radiograph for radiolucent and radio-opaque stones, respectively...
March 23, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29395157/global-profiling-combined-with-predicted-metabolites-screening-for-discovery-of-natural-compounds-characterization-of-ginsenosides-in-the-leaves-of-panax-notoginseng-as-a-case-study
#17
Chang-Liang Yao, Hui-Qin Pan, Hui Wang, Shuai Yao, Wen-Zhi Yang, Jin-Jun Hou, Qing-Hao Jin, Wan-Ying Wu, De-An Guo
Liquid chromatography-mass spectrometry (LC-MS) guided isolation is a favored strategy to quickly and efficiently explore the chemical diversity of herbal medicines. In this study, two methods were adopted to improve the performance of the strategy, including offline two-dimensional (2D) LC to extend the peak capacities and predicted metabolites screening (PMS) to automatically screen the targets with expanded databases. Ginsenosides in the leaves of Panax notoginseng (PNL) were taken as a case. An offline 2D LC system was constructed with an orthogonality of 0...
February 23, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29376598/-analysis-of-clinical-effectiveness-and-risk-factors-for-complication-of-percutaneous-nephrolototripsia-in-patients-with-a-solitary-kidney
#18
L D Arustamov, M I Katibov, D S Merinov, Sh Sh Gurbanov, A V Artemov, V A Epishov
RELEVANCE: Management of patients with large and staghorn stones of a solitary kidney is widely debated among urologists and has not been sufficiently investigated, which determined the relevance of this study. MATERIALS AND METHODS: The study comprised 80 patients with large (>20 mm) and staghorn stones of an anatomically or functionally solitary kidney. Of them, 58 patients underwent percutaneous nephrolithotripsy (PNL), and 22 had open surgery. The criterion of the treatment effectiveness was the complete stone clearance or small residual fragments sized less than 3 mm...
December 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29368229/viability-and-biocompatibility-of-an-adhesive-system-for-intrarenal-embedding-and-endoscopic-removal-of-small-residual-fragments-in-minimally-invasive-stone-treatment-in-an-in-vivo-pig-model
#19
Simon Hein, Dominik Stefan Schoeb, Ingo Grunwald, Katharina Richter, Jörg Haberstroh, Maximilian Seidl, Peter Bronsert, Ulrich Wetterauer, Martin Schoenthaler, Arkadiusz Miernik
PURPOSE: To evaluate the viability and biocompatibility of a novel, patented bioadhesive system for intrarenal embedding and retrieval of residual fragments after endoscopic lithotripsy. Complete stone clearance via active removal of residual fragments (RF) after intracorporeal laser lithotripsy may be time-consuming and fail in many cases. Therefore, the novel adhesive has been developed and evaluated for the first time in an in vivo pig model in the present work. METHODS: Four female domestic pigs underwent flexible ureteroscopy (RIRS) or percutaneous nephrolithotomy (PNL) under general anesthesia (8 kidneys, 4 × RIRS, 4 × PNL) evaluating the bioadhesive system...
January 24, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29362656/clinical-efficacy-and-safety-of-transcatheter-embolization-for-vascular-complications-after-percutaneous-nephrolithotomy
#20
Necdet Poyraz, Mehmet Balasar, İbrahim Erdem Gökmen, Osman Koç, Mehmet Giray Sönmez, Arif Aydın, Yunus Emre Göger, Ahmet Öztürk
Introduction: Percutaneous nephrolithotomy (PNL) is the preferred procedure for safe and effective surgical treatment of kidney stones. Hemorrhage is the most serious complication of PNL, resulting from pseudoaneurysm (PA) or arteriovenous fistula (AVF), and can usually be controlled with conservative treatment. Aim: To evaluate endovascular treatments and outcomes of vascular complications observed after PNL. Material and methods: We retrospectively reviewed data on 19 patients who underwent renal embolization due to post-PNL renal artery bleeding between March 2005 and September 2016...
December 2017: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
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