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Renal stones

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https://www.readbyqxmd.com/read/28733910/a-review-study-to-evaluate-holmium-yag-laser-lithotripsy-with-flexible-ureteroscopy-in-patients-on-ongoing-oral-anticoagulant-therapy
#1
Bulent Altay, Bulent Erkurt, Selami Albayrak
The objective of this study was to evaluate the safety and efficacy of flexible ureteroscopy (FURS) and holmium:YAG laser lithotripsy for the treatment of upper urinary tract stones in patients on active oral anticoagulants. The records of 1081 patients who underwent flexible ureteroscopic holmium:YAG (Ho:YAG) laser lithotripsy for upper ureteral and renal calculi from 1999 to 2015 were retrospectively reviewed. A total of 84 patients on continuous oral anticoagulation or antiplatelet therapy (warfarin, aspirin, or clopidogrel) were identified...
July 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28732093/attitudes-among-transplant-professionals-regarding-shifting-paradigms-in-eligibility-criteria-for-live-kidney-donation
#2
Jeffrey A Lafranca, Emerentia Q W Spoon, Jacqueline van de Wetering, Jan N M IJzermans, Frank J M F Dor
BACKGROUND: The transplant community increasingly accepts extended criteria live kidney donors, however, great (geographical) differences are present in policies regarding the acceptance of these donors, and guidelines do not offer clarity. The aim of this survey was to reveal these differences and to get an insight in both centre policies as well as personal beliefs of transplant professionals. METHODS: An online survey was sent to 1128 ESOT-members. Questions were included about several extended donor criteria; overweight/obesity, older age, vascular multiplicity, minors as donors and comorbidities; hypertension, impaired fasting glucose, kidney stones, malignancies and renal cysts...
2017: PloS One
https://www.readbyqxmd.com/read/28729176/infant-nephrolithiasis-and-nephrocalcinosis-natural-history-and-predictors-of-surgical-intervention
#3
Veridiana Andrioli, Kerri Highmore, Michael P Leonard, Luis A Guerra, Kenneth Tang, Jennifer Vethamuthu, Victoria Meyers, Katrina J Sullivan, Melise A Keays
INTRODUCTION: Renal stone disease diagnosed in the first year of life is relatively uncommon. While risk factors such as low birth weight, furosemide exposure, and metabolic disorders are well established, there exists little information regarding resolution rates and need for surgical intervention. Our study objective was to evaluate urolithiasis and renal calcification resolution rates, time to resolution, and need for surgical intervention in children diagnosed in their first year of life...
July 10, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28727384/a-neural-network-based-algorithm-for-predicting-stone-free-status-after-eswl-therapy
#4
Ilker Seckiner, Serap Seckiner, Haluk Sen, Omer Bayrak, Kazim Dogan, Sakip Erturhan
OBJECTIVE: The prototype artificial neural network (ANN) model was developed using data from patients with renal stone, in order to predict stone-free status and to help in planning treatment with Extracorporeal Shock Wave Lithotripsy (ESWL) for kidney stones. MATERIALS AND METHODS: Data were collected from the 203 patients including gender, single or multiple nature of the stone, location of the stone, infundibulopelvic angle primary or secondary nature of the stone, status of hydronephrosis, stone size after ESWL, age, size, skin to stone distance, stone density and creatinine, for eleven variables...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28727383/outcomes-of-miniaturized-percutaneous-nephrolitotomy-in-infants-single-centre-experience
#5
Eyyup Sabri Pelit, Bülent Kati, Cengiz Çanakci, Süleyman Sağir, Halil Çiftçi
OBJECTIVES: The present study was aim to evaluate the safety and efficacy of Mini-PNL to treat kidney stones in patients aged <3 years. This is the one of the largest series in the literature in this age group of patients. MATERIAL AND METHODS: From May 2012 to April 2016, the medical records of 74 infant patients who underwent mini-PNL for renal stones were reviewed retrospectively. All infants were evaluated with the plain abdominal radiograph, urinary ultrasound, noncontrast computerized tomography and/or intravenous urogram...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28726586/application-of-ureterorenoscope-and-flexible-ureterorenoscope-lithotripsy-in-removing-calculus-from-extracorporeal-living-donor-renal-graft-a-single-center-experience
#6
Chun-Hua Lin, Zuo-Fu Zhang, Jiahui Wang, Lu-Xin Yu, Wen-Ting Wang, Lei Shi, Xiang-Nan Lin
Here, we reported our clinical application of ureterorenoscope (URS) and flexible URS lithotripsy in stone removal on 10 cases of excised living donor kidney graft. After the extraction of donor kidney by retroperitoneal laparoscopy, the donor graft was perfused with 4 °C HCA solution. Calculus between 2-4 mm were removed intact with lithotomy forceps under direct vision of URS. Larger calculi of >4 mm were fractured with flexible URS combining holmium laser lithotripsy. Fragments of the calculus were extracted with basket extractor and lithotomy forceps...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28723230/retrograde-endourological-management-of-upper-urinary-tract-abnormalities-in-patients-with-ileal-conduit-urinary-diversion-a-dual-center-experience
#7
Louise Olson, Hywel Satherley, Paul Cleaveland, Bachar Zelhof, Max Mokete, Donald Neilson, Shalom Srirangam
INTRODUCTION: Patients with ileal conduit urinary diversions are at an increased risk of long-term upper urinary tract (UUT) complications, including anastomotic strictures, infections, and urolithiasis. The reconstructed urinary system poses challenges for endoscopic manipulation. We present and describe our dual-center experience in performing retrograde ureteroscopy to treat or diagnose UUT abnormalities in patients with ileal conduit incontinent diversion. PATIENT AND METHODS: We performed a retrospective analysis of medical records for all patients with previous urinary diversion who underwent retrograde ureteroscopic procedures via the ileal loop in our institutions over a 9 year period (between June 2007 and August 2016)...
July 19, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28720719/introduction-of-a-new-imaging-guideline-for-suspected-renal-colic-in-the-ed-reduces-ct-urography-utilisation
#8
Gabriel Blecher, Rob Meek, Diana Egerton-Warburton, Philip McCahy
BACKGROUND: Patients presenting to the ED with suspected renal colic are frequently imaged with CT urography (CTU), which rarely alters diagnosis or management. To reduce use of CTU in this population, we instigated a new imaging and management guideline in our ED. METHODS: This was a quasi-experimental prospective study, whereby a new guideline was commenced at the intervention site (Monash Medical Centre) and the existing guideline continued at the control site (Dandenong Hospital)...
July 18, 2017: Emergency Medicine Journal: EMJ
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/28720370/the-swiss-kidney-stone-cohort-an-observational-study-to-unravel-the-cause-of-renal-stone-formation
#10
Beat Roth, Olivier Bonny
Its nationwide character, standardized and extensive patient work-up, long-term follow-up, and significant number of patients recruited make the Swiss Kidney Stone Cohort a valuable tool to better understand the pathophysiology of kidney stone formation.
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28720368/a-critical-review-of-miniaturised-percutaneous-nephrolithotomy-is-smaller-better
#11
REVIEW
Silvia Proietti, Guido Giusti, Mahesh Desai, Arvind P Ganpule
CONTEXT: In an effort to reduce morbidity related to percutaneous nephrolithotomy (PCNL), some investigators have progressively introduced miniaturised approaches. The development of miniaturised nephroscopes facilitated widespread dissemination of these techniques and a significant expansion of the role of PCNL in endourology. OBJECTIVE: To discuss the different techniques comprising modern PCNL and identify the pros and cons of each of them. EVIDENCE ACQUISITION: Data for this review were identified through a search of PubMed, including studies published in the last 20 yr in core clinical journals in English...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28720366/the-evolving-role-of-retrograde-intrarenal-surgery-in-the-treatment-of-urolithiasis
#12
REVIEW
Francesco Sanguedolce, Giorgio Bozzini, Ben Chew, Panagiotis Kallidonis, Jean de la Rosette
CONTEXT: Retrograde intrarenal surgery has gained substantial popularity worldwide thanks to continuous improvements in technology and techniques, and is now considered one of the first-line treatment options for active removal of renal stones. OBJECTIVE: To provide a comprehensive synthesis of the main evidences in literature on the current management of kidney stones by means of retrograde intrarenal surgery (RIRS). EVIDENCE ACQUISITION: A review of literature has been conducted using search string "retrograde intrarenal surgery OR flexible ureteroscop* OR ureterorenoscop*", without any language restriction; PubMed, Embase, and Scopus databases were searched in November 2016...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28720362/case-discussion-kidney-stone-in-a-patient-with-an-ileal-conduit
#13
Cesare Marco Scoffone, Cecilia Maria Cracco
Kidney stones in patients with ileal conduit and multiple sclerosis are secondary to postoperative anatomical changes and ascending urinary tract infections by urea-splitting bacteria. PNL is the preferred treatment option in patients with urinary diversion and infectious renal stones.
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28720360/kidney-stone-in-a-patient-with-an-ileal-conduit
#14
Steeve Doizi, Olivier Traxer
The advantage of a retrograde over an antegrade approach in ileal conduit diversion is the lower morbidity. Furthermore, in cases in which there are bone deformities and no ureteral reflux from the reservoir into the upper tract, percutaneous access can be challenging. Thus, a retrograde approach should be considered as the first-line option for the treatment of renal stones in patients with an ileal conduit, but the urologist should keep in mind that an antegrade or combined approach may be possible in the case of failure...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28719978/optimizing-rna-extraction-of-renal-papilla-biopsy-tissue-in-kidney-stone-formers-a-new-methodology-for-genomic-study
#15
Kazumi Taguchi, Manint Usawachintachit, Shuzo Hamamoto, Rei Unno, David T Tzou, Benjamin Sherer, Yongmei Wang, Atsushi Okada, Marshall Stoller, Takahiro Yasui, Thomas Chi
INTRODUCTION: Endoscopic tools have provided versatile examination and treatment for kidney stone procedures. Despite endourologists researching urinary stone disease using endoscopes to collect tissue, this tissue collection method is limited. Endoscopically removed tissues are small in size, restricting the types of genome-based examination possible. We investigated a new method of renal papilla biopsy and RNA extraction to establish a genomic research methodology for kidney stone disease...
July 18, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28717542/evaluation-of-postoperative-hydronephrosis-following-semirigid-ureteroscopy-incidence-and-predictors
#16
Mehmet İlker Gökçe, Barış Esen, Başak Gülpınar, Adil Hüseynov, Mete Özkidik, Evren Süer
OBJECTIVE: Hydronephrosis developing following ureteroscopy (URS) is an important issue associated with the long-term postoperative renal functions. Studies investigating the role of postoperative imaging revealed conflicting results. In this study, we aimed to determine the incidence and predictors of hydronephrosis following semirigid URS. MATERIAL AND METHODS: We evaluated the results of 455 patients who underwent U RS a nd postoperative imaging with non-contrast computed tomography (CT)...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28717541/is-standard-percutaneous-nephrolithotomy-still-the-standard-treatment-modality-for-renal-stones-less-than-three-centimeters
#17
Ömer Sarılar, Faruk Özgör, Onur Küçüktopçu, Burak Uçpınar, Mehmet Fatih Akbulut, Metin Savun, Zafer Gökhan Gürbüz, Murat Binbay
OBJECTIVE: The aim of study was to compare the efficiency and safety of standard percutaneous nephrolithotomy (sPNL) and miniaturized percutaneous nephrolithotomy (mPNL) in lower calyx and/or pelvic stones smaller than three centimeters. MATERIAL AND METHODS: From October 2010 to August 2015, 108 mPNL and 176 sPNL procedures were performed for renal stones smaller than three cm and located in the lower calyx and/or renal pelvis. All patients were evaluated preoperatively with intravenous pyelography and/or computed tomography...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28717539/single-session-vs-two-sessions-of-flexible-ureterosopy-furs-for-dusting-of-renal-pelvic-stones-2-3-cm-in-diameter-does-stone-size-or-hardness-play-a-role-in-number-of-sessions-to-be-applied
#18
Ahmed Mamdouh Abd El Hamed, Hazem Elmoghazy, Mohamed Aldahshoury, Ahmed Riad, Mohammed Mostafa, Fawzy Farag, Wael Gamal
OBJECTIVE: To evaluate the stone hardness in predicting the need for single or two sessions of retrograde intrarenal surgery (RIRS) for renal pelvis stones of 2-3 cm in size. MATERIAL AND METHODS: Ninety-six patients (64 male and 32 female) with only renal stones (2.5±0.3 cm) underwent RIRS using flexible 7.5 Fr ureteroscope (FURS). The stone hardness was evaluated by preoperative non-contrast computed tomography (NCCT). The patients were divided into two groups based on stone hardness: Group I (n=54) (hard stones - Hounsfield Unit (HU) >1000) and group II (n=42) (not hard stone - HU <1000)...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28717532/retrograde-intrarenal-surgery-for-renal-stones-part-1
#19
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/28714490/current-diagnostic-approach-and-initial-treatment-patterns-for-renal-colic-in-emergency-department
#20
R Shrestha, Y Bista, A Khan
BACKGROUND: Renal colic is a common clinical presentation in emergency. The goal of this study was to describe the epidemiology, current diagnostic and treatment strategies of ureteric colic in our emergency department. METHODS: This is a retrospective study performed over a six months period of patients with clinically suspected renal colic. Data collected included age, sex, urine analysis, ultrasound studies regarding size, site of the stone and presence of hydronephrosis...
January 2017: Journal of Nepal Health Research Council
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