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Kidney stone

Chi-Fai Ng, Sylvia Luke, Chi-Hang Yee, Winnie Chu, Ka-Tak Wong, John Yuen
Objectives To perform a prospective study to evaluate the renal protective effects of ramping protocol and pause protocol for extracorporeal shockwave lithotripsy in human subjects. Patients and Methods 320 patients with solitary renal stone <15mm, were randomized to receive one of four protocols: (1) 80% power from beginning until the end of treatment; (2) the first 100 SWs at 40% power, and then 80% power until the end of treatment; (3) the first 100 shocks at 40% power, followed by a 3-minute pause and then further SWs at 80% power until the end of treatment; and (4) the first 100 shocks at 80% power, followed by a 3-minute pause and then further SWs at 80% power until the end of treatment...
October 20, 2016: Journal of Endourology
Shih-Yi Lin, Cheng-Li Lin, Chao-Hsiang Chang, His-Chin Wu, Wen-Chi Chen, I-Kuan Wang, Yao Lung Liu, Fung-Chang Sung, Yen-Jung Chang, Chia-Hung Kao
Large cohort studies on whether any association existed between urological interventions for urolithiasis and the development of CKD are lacking. From claims data of the National Health Insurance (NHI) program of Taiwan, we identified 54,433 patients newly diagnosed with urolithiasis during 1998-2010. For each case, four individuals without urolithiasis were randomly selected and frequency matched by age, sex, and diagnosis year. Both groups were followed up until the end of 2010. Incident CKD events were identified by the International Classification of Diseases, Ninth Revision (ICD-9) code in the NHI registration database...
October 19, 2016: Urolithiasis
Ben H Chew, Dirk Lange
Open ureterolithotomy and pyelolithotomy used to be first line therapy for treating kidney and ureteral stones. With the advent of shockwave lithotripsy, open stone surgery became less prevalent, but once ureteroscopy became more prevalent, open stone surgery became all but extinct. Advances in smaller, more flexible endoscopes and improvements in intracorporeal lithotripters, ureteroscopy has become a mainstay of therapy for kidney stones. The holmium:YAG laser can be utilized through flexible instruments and fragments any stone no matter what it is composed of...
October 19, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
Helena Chang, David T Tzou, Manint Usawachintachit, Brian D Duty, Ryan S Hsi, Jonathan D Harper, Mathew D Sorensen, Marshall Stoller, Roger L Sur, Thomas Chi
<b>Objectives</b>: Registry-based clinical research in nephrolithiasis is critical to advancing quality in urinary stone disease management and ultimately reducing stone recurrence. A need exists to develop HIPAA-compliant registries comprised of integrated electronic health record (EHR) data using prospectively defined variables. An EHR-based standardized patient database - The Registry for Stones of the Kidney & Ureter (ReSKU™) was developed and herein we describe our implementation outcomes...
October 19, 2016: Journal of Endourology
Casey A Dauw, Michael 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 hand-piece for use in percutaneous nephrolithotomy (PCNL) that couples the holmium laser with suction has been developed. To date, there exists limited data regarding the usability and ergonomics of such treatment systems. We thus sought to compare surgeon-rated usability with three different suction laser hand-pieces in a porcine model. METHODS: We performed bilateral reverse PCNL on 4 female domestic farm pigs...
October 19, 2016: Journal of Endourology
Jodi A Antonelli, Heather Beardsley, Stephen Faddegon, Monica Sc Morgan, Jeffrey C Gahan, Margaret S Pearle, Jeffrey A Cadeddu
PURPOSE: We developed a polyethylene sack (the PercSac) that fits over the shaft of a rigid nephroscope and is deployed into the collecting system to capture a stone and contain fragments during PCNL. We previously reported results using the PercSac in a percutaneous cystolithopaxy model. Herein we compare the efficiency of stone fragmentation with and without the PercSac in an anatomically correct in vitro PCNL model. MATERIALS AND METHODS: The PCNL model consisted of a human collecting system model created on a 3-D printer...
October 19, 2016: Journal of Endourology
Vahit Guzelburc, Mehmet Balasar, Mukaddes Colakogullari, Selcuk Guven, Abdulkadir Kandemir, Ahmet Ozturk, Pelin Karaaslan, Bulent Erkurt, Selami Albayrak
PURPOSE: Irrigation-induced increase in intrarenal pressure is of concern because it may cause infection due to increased pyelovenous and pyelolymphatic absorption. This study is the first to compare prospectively the absorbed fluid volumes during percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) for stones larger than 2 cm. MATERIALS AND METHODS: General anesthesia was applied to all patients. Isotonic solution containing 1 % ethanol was used as irrigation fluid...
2016: SpringerPlus
Ravindra D Hiremath, Sunil S Jalalpure
OBJECTIVE: Aim of this study is to evaluate antiurolithiatic potential of whole plant hydro-alcoholic (30:70) extract of Vernonia cinerea Less. in accordance to its claims made in ancient literature and also being one of the ingredients of cystone, a marketed formulation widely used in the management of urolithiasis. MATERIALS AND METHODS: To induce urolithiasis, 0.75% v/v ethylene glycol was administered orally for 14 days. The curative dose of 400 mg/kg b.w. and preventive doses of 100, 200, and 400 mg/kg b...
July 2016: Indian Journal of Pharmacology
Abdussamet Batur
Primary hyperparathyroidism (pHPT) is a condition caused by excessive and uncontrolled secretion of parathyroid hormone. The classical presenting symptoms in primary hyperparathyroidism are renal stones, hypercalcemic crisis, soft tissue calcifications, and cystic bone disease. Although most cases of pHPT are detected early and before symptomatic lesions appear, some patients may present late in the course of their disease. In this report, we present a patient with extensive parenchymal calcifications forming a cast of the right kidney which is called as "putty kidney" with Brown tumor located in the pubic ramus...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
Dean G Assimos
No abstract text is available yet for this article.
November 2016: Journal of Urology
Zhuo Liu, Hongyang Jiang, Jun Yang, Tao Wang, Yufeng Ding, Jihong Liu, Shaogang Wang, Zhangqun Ye
Calcium oxalate stones account for >80% of urinary stones, however the mechanisms underlying their formation remains to be elucidated. Hyperoxaluria serves an important role in the pathophysiological process of stone formation. In the present study, differences in the miRNA expression profiles between experimental hyperoxaluric rats and normal rats were analyzed, in order to identify target genes and signaling pathways involved in the pathogenesis of hyperoxaluria. Ethylene glycol and ammonium chloride was fed to male hyperoxaluric rats (EXP) and normal age‑matched male rats (CON)...
October 12, 2016: Molecular Medicine Reports
Eiko Hasegawa, Naoki Sawa, Junichi Hoshino, Tatsuya Suwabe, Noriko Hayami, Masayuki Yamanouchi, Akinari Sekine, Rikako Hiramatsu, Aya Imafuku, Masahiro Kawada, Yoshifumi Ubara, Tsunao Imamura, Kenmei Takaichi
We herein present a rare case of an autosomal dominant polycystic kidney disease (ADPKD) patient with Caroli's disease, a congenital embryonic biliary tree ductal plate abnormality often associated with autosomal recessive polycystic kidney disease. A 76-year-old woman with ADPKD on hemodialysis was admitted to our hospital with recurrent cholangitis and hepatobiliary stones. Caroli's disease was diagnosed according to typical imaging findings of cystic intrahepatic bile duct dilatation and the central dot sign...
2016: Internal Medicine
Ryan S Hsi, Thomas Sanford, David S Goldfarb, Marshall L Stoller
PURPOSE: Kidney stone prevention relies on the 24-hour urine collection to diagnose metabolic abnormalities and direct dietary and pharmacologic therapy. While its use is guideline-supported for high risk and interested patients, evidence that the test can accurately predict recurrence or treatment response is limited. We sought to critically reassess the role of the 24-hour urine collection in stone prevention. MATERIALS AND METHODS: In addition to a MEDLINE® search to identify controlled studies of dietary and pharmacologic interventions, evidence supporting the AUA and EAU guidelines for metabolic stone prevention were evaluated...
October 13, 2016: Journal of Urology
Donna Arvans, Yong-Chul Jung, Dionysios Antonopoulos, Jason Koval, Ignacio Granja, Mohamed Bashir, Eltayeb Karrar, Jayanta Roy-Chowdhury, Mark Musch, John Asplin, Eugene Chang, Hatim Hassan
Hyperoxaluria is a major risk factor for kidney stones and has no specific therapy, although Oxalobacter formigenes colonization is associated with reduced stone risk. O. formigenes interacts with colonic epithelium and induces colonic oxalate secretion, thereby reducing urinary oxalate excretion, via an unknown secretagogue. The difficulties in sustaining O. formigenes colonization underscore the need to identify the derived factors inducing colonic oxalate secretion. We therefore evaluated the effects of O...
October 13, 2016: Journal of the American Society of Nephrology: JASN
Mordechai Duvdevani
Endoscopic treatment is currently the mainstay of management for urolithiasis. The high effectiveness of PCNL is well documented in the literature, as are its complications. Bleeding during PCNL is directly related to the size of the dilatation.(1) Several minimally invasive refinements in percutaneous surgery have been made to reduce access related complications and bleeding rates.(2) This was achieved mainly by reducing tract diameter, but the advantage over standard PCNL has yet to be proven.(3) The effectiveness of RIRS is decreasing with increasing stone burden...
October 12, 2016: Journal of Endourology
Karolína Drbalová, Kateřina Herdová, Petr Krejčí, Monika Nývltová, Svatopluk Solař, Lenka Vedralová, Pavel Záruba, David Netuka, Petr Bavor
Multiple Endocrine Neoplasia (MEN) is a condition in which several endocrine organs of an individual are affected by adenoma, hyperplasia and less often carcinoma, either simultaneously or at different stages of life. Two existing syndromes, MEN1 and MEN2 (2A, 2B), in literature is also mentioned MEN4, are associated also with other non-endocrine disorders. MEN1 (Wermer syndrome) affects the pituitary, parathyroid, and pancreatic area. 95 % of patients show very early manifestation of hyperparathyroidism, often before 40 years of age...
2016: Vnitr̆ní Lékar̆ství
Mohammad Hossein Soltani, Nasser Simforoosh, Akbar Nouralizadeh, Mehdi Sotoudeh, Mohammad Javad Mollakoochakian, Hamid Reza Shemshaki
PURPOSE: Treatment of pediatric urolithiasis is still on debate. This study was designed to evaluate the safety and efficacy of laparoscopic pyelolithotomy in five children less than two years old. MATERIALS AND METHODS: Five children (less than two years old) with large kidney stones underwent laparoscopic pyelolithotomy. All patients underwent laparoscopic pyelolithotomy via a transperitoneal approach. After medial mobilization of colon and once renal pelvis and ureteropelvic junction were exposed, a longitudinal or circular incision was made on the renal pelvis, depending on the location and shape of the stone...
October 10, 2016: Urology Journal
Babak Javanmard, Amir Hossein Kashi, Mohammad Mohsen Mazloomfard, Anahita Ansari Jafari, Saeed Arefanian
PURPOSE: To compare outcomes of retrograde intrarenal surgery (RIRS) with extracorporeal shock wave lithotripsy (SWL) for stones ≤ 2 cm. MATERIALS AND METHODS: Patients who were diagnosed with kidney stones of ≤ 2 cm underwent RIRS or SWL in a parallel group randomized clinical trial with balanced randomization [1:1] from 2011 to 2014. The primary outcome of interest was stone free rate after a single session intervention. Patients were evaluated by ultrasonography and KUB at 1 and 3 months after the intervention for the presence of residual stone by a radiologist who was blinded to the study...
October 10, 2016: Urology Journal
Siavash Falahatkar, Gholamreza Mokhtari, Mojtaba Teimoori
PURPOSE: To compare results of studies on supine and prone percutaneous nephrolithotomy (PCNL) techniques to find the best position for treating kidney stones. MATERIALS AND METHODS: A systematic literature review was done in April 2016 using PubMed, Scopus, and Web of Science databases to identify the relevant studies. Article selection was based on the preferred reporting elements of systematic reviews and meta-analysis criteria. A subgroup analysis was done comparing standard prone and supine PCNLs separately...
October 10, 2016: Urology Journal
Andreas Selberherr, Marcus Hörmann, Gerhard Prager, Philipp Riss, Christian Scheuba, Bruno Niederle
PURPOSE: The purpose of this study was to demonstrate the high number of kidney stones in primary hyperparathyroidism (PHPT) and the low number of in fact "asymptomatic" patients. METHODS: Forty patients with PHPT (28 female, 12 male; median age 58 (range 33-80) years; interquartile range 17 years [51-68]) without known symptoms of kidney stones prospectively underwent multidetector computed tomography (MDCT) and ultrasound (US) examinations of the urinary tract prior to parathyroid surgery...
October 12, 2016: Langenbeck's Archives of Surgery
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