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Renal calculi

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https://www.readbyqxmd.com/read/28073209/the-importance-of-potassium-citrate-and-potassium-bicarbonate-in-the-treatment-of-uric-acid-renal-stones
#1
Michele Barbera, Andreas Tsirgiotis, Mauro Barbera, Quintino Paola
Uric acid calculi can also be treated without surgery, with simple medical lytic therapy. After appropriate dietary adjustments and add of mineral water, the needed amount of alkali supplementation can increase pH values of the urine in order to dissolve the stones. Treatment should be prolonged to prevent stone recurrence. A case of bilateral renal uric acid stones that were successfully treated by alakalizing treatment was presented.
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28073208/experience-of-percutaneous-access-under-ultrasound-guidance-in-renal-transplant-patients-with-allograft-lithiasis
#2
Silvano Palazzo, Ottavio Colamonico, Saverio Forte, Matteo Matera, Giuseppe Lucarelli, Pasquale Ditonno, Michele Battaglia, Pasquale Martino
OBJECTIVE: Urolithiasis of the transplanted kidney has an incidence of 0.2 to 1.7%, it increases the risk of infection in immunosuppressed patients and it can lead to ureteral obstruction that is often associated with deterioration of renal function. Urolithiasis of the transplanted kidney has different characteristics compared to the native kidney, due to the absence of innervation, which does not lead to colic pain. Percutaneous approach is an optimal choice in transplant patients. MATERIAL AND METHODS: Here we report our experience in two cadaveric transplant patients with urolithiasis...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28057991/extracorporeal-shockwave-lithotripsy-without-radiation-ultrasound-localization-is-as-effective-as-fluoroscopy
#3
Hazel Elizabeth Smith, David Alistair Bryant, Jenny KooNg, Richard Alexander Chapman, Gareth Lewis
CONTEXT: Extracorporeal shockwave lithotripsy (SWL) is the first-line treatment for renal calculi in most cases. Recent technology has allowed lithotriptor machines to localize stones using fluoroscopy or ultrasound (US). AIM: The aim of this study is to compare stone free rates (SFR) using two techniques. METHODS: This is a single center retrospective cohort study. We have studied 95 patients with renal calculi undergoing first SWL treatment with localization using US (48 pts) and fluoroscopy (47 pts)...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28057987/factors-predicting-infectious-complications-following-percutaneous-nephrolithotomy
#4
Kuldeep Sharma, Satya Narayan Sankhwar, Apul Goel, Vishwajeet Singh, Pradeep Sharma, Yogesh Garg
OBJECTIVE: To determine the predictors of infectious complications following percutaneous nephrolithotomy (PCNL) in a prospective study. MATERIALS AND METHODS: A total of 332 patients with renal or upper ureteric calculi who underwent PCNL between January 2013 and June 2014 were included in the study. Infectious complications included febrile urinary tract infection and septicemia. The patients were divided into Group A and B depending on whether they developed or did not develop infectious complications...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28052697/are-you-familiar-with-the-flow-of-the-roboflex-avicenna-pump-allow-me-to-explain
#5
Salvatore Butticè, Silvia Proietti, Laurian Dragos, Olivier Traxer
Flexible ureteroscopy in the last few years has become a valid alternative to extracorporeal shock-wave and percutaneous nephrolithotomy even for larger renal calculi. Since 2012, ELMED (Ankara, Turkey) has been working on a robot specifically designed for flexible ureteroscopy. Today we know of the mechanics and electronic parts of Roboflex, what is unknown is the flow rate that the pump develops. We've taken a container connected to the irrigation system of the pump and we measured the quantity of saline solution for each speed...
January 4, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/27998863/-staged-retrograde-flexible-ureteroscopic-lithotripsy-versus-miniaturized-percutaneous-nephrolithotomy-for-renal-stones-of-2-4-cm-in-diameter-a-randomized-controlled-trial
#6
Jian-Wei Li, Fang Wang, Fang-Zhen Cai, Hong-Zhi Gao
OBJECTIVE: To compare the efficacy and safety of staged retrograde flexible ureteroscopic lithotripsy (FURS) and miniaturized percutaneous nephrolithotomy (m-PCNL) for treatment of renal stones of 2-4 cm in diameter. METHODS: This randomized controlled trial was conducted in 70 patients with renal stones of 2-4 cm in diameter admitted in our hospital between January 2013 and December 2015. The patients were randomized to receive staged FURS (35 cases) or m-PCNL (35 cases), and the total treatment time, total hospital stay after procedure, total medical cost, treatment success, decrease in hemoglobin level and complications were compared between the two groups...
December 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27967216/randomized-study-of-ureteral-catheter-vs-double-j-stent-in-tubeless-minimally-invasive-percutaneous-nephrolithotomy-patients
#7
Yizhou Zhou, Jianguo Zhu, Alberto Gurioli, Dongbo Yuan, Jiawei Luo, Zhilin Li, Wei Zhang, Shiwei Xiao, Yongda Liu
OBJECTIVE: To prospectively analyze and compare the outcomes of using externalized ureteral catheter (EUC) vs Double-J ureteral stent (DJ) in tubeless minimally invasive percutaneous nephrolithotomy (MPCNL). PATIENTS AND METHODS: A total of 109 patients underwent tubeless MPCNL in our institute and have been enrolled into this study. Fifty-six and 53 patients had EUC and DJ positioning at the conclusion of the procedure, respectively. The two approaches have been compared for operative time, intraoperative blood loss, postoperative visual analogue pain scale (VAS) score, analgesic requirement, stent-related symptoms, hospital stay, degree of vesicoureteral reflux (VUR) on the operative side, and complications according to the modified Clavien system...
January 12, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/27960541/high-frequency-dusting-versus-conventional-holmium-laser-lithotripsy-for-intrarenal-and-ureteric-calculi
#8
Roger Li, David Ruckle, Mohamed Keheila, Jonathan Maldonado, Michelle Lightfoot, Muhannad Alsyouf, Alexander Yeo, Samuel R Abourbih, Gaudencio Olgin, Javier L Arenas, D Duane Baldwin
<b>INTRODUCTION</b> The efficiency of holmium laser lithotripsy for urolithiasis depends upon several factors including laser pulse energy and frequency, and stone composition and retropulsion. This study investigates the complex interplay between these factors and quantifies lithotripsy efficiency using different laser settings in a bench-top kidney and ureter model. <b>METHODS</b> In vitro calyceal and ex vivo porcine ureteral models were constructed. Calcium oxalate monohydrate stones were fragmented using a 200 µm laser fiber...
December 13, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27940671/case-report-cystinuria-and-polycystic-kidney-disease
#9
Ajaydeep Sidhu, Angela Mittal, Xamayta Negroni-Balasquide, Alex Constantinescu, Kristin Kozakowski
Cystinuria and polycystic kidney disease are 2 genetic disorders that affect the genitourinary tract but rarely together. This case report presents 2 pediatric patients diagnosed with polycystic kidney disease and cystinuria requiring surgical treatment. Both subjects presented acutely with stone disease. Imaging studies and stone analysis established the diagnoses. Although coexistence of these 2 conditions is rare, cystinuria should be considered in the differential diagnosis when evaluating patients with cystic disease who develop renal calculi...
December 2016: Pediatrics
https://www.readbyqxmd.com/read/27933480/alternatives-to-the-baseline-kub-for-ctkub-detected-calculi-evaluation-of-ct-scout-and-average-and-maximum-intensity-projection-images
#10
Hin-Boon Matthew Lew, James Han-Su Seow, Chandra Padmini Hewavitharana, Sally Burrows
PURPOSE: A CT of the kidneys, ureters, and bladder (CTKUB) is the investigation of choice in suspected renal colic. Plain kidney, ureter, and bladder radiographs (KUB) can be used to monitor the progress of a stone if radiographically visible on a baseline KUB. This study aims to determine if a low-dose CT Scout, thick-slab average intensity projection (AIP), or maximum intensity projection (MIP) images are suitable as substitutes for a baseline KUB. METHOD: A retrospective review of patients from a tertiary adult institute that had a positive CTKUB and a KUB within 4 h of the CT was performed...
December 8, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27932479/progress-in-understanding-the-genetics-of-calcium-containing-nephrolithiasis
#11
John A Sayer
Renal stone disease is a frequent condition, causing a huge burden on health care systems globally. Calcium-based calculi account for around 75% of renal stone disease and the incidence of these calculi is increasing, suggesting environmental and dietary factors are acting upon a preexisting genetic background. The familial nature and significant heritability of stone disease is known, and recent genetic studies have successfully identified genes that may be involved in renal stone formation. The detection of monogenic causes of renal stone disease has been made more feasible by the use of high-throughput sequencing technologies and has also facilitated the discovery of novel monogenic causes of stone disease...
December 8, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27930581/associations-between-interventions-for-urolithiasis-and-urinary-tract-cancer-among-patients-in-taiwan-the-effect-of-early-intervention
#12
Chien-Liang Lin, Wen-Tsung Huang, Wen-Chou Fan, Yin-Hsun Feng, Chia-Ho Lin, Chian-Shiung Lin, Chih-Cheng Lu, Tse-Chou Cheng, Chao-Jung Tsao, Sheng-Hsiang Lin
The aim of this study was to investigate cancer risk in patients with a history of urolithiasis and to determine whether intervention for calculi attenuated the risk of subsequent urinary tract cancer (UTC).Using data from the National Health Insurance Research Database in Taiwan, we performed a nationwide cohort study enrolling participants (n = 42,732) aged > 30 years who were diagnosed with urinary tract calculi between 2000 and 2009. Age- and gender-matched insured individuals (n = 213,660) found in the health service records over the same period were recruited as the control group...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27930563/combining-ultrasonography-and-noncontrast-helical-computerized-tomography-to-evaluate-holmium-laser-lithotripsy
#13
Jia Mi, Jie Li, Qinglu Zhang, Xing Wang, Hongyu Liu, Yanlu Cao, Xiaoyan Liu, Xiao Sun, Mengmeng Shang, Qing Liu
The purpose of the study was to establish a mathematical model for correlating the combination of ultrasonography and noncontrast helical computerized tomography (NCHCT) with the total energy of Holmium laser lithotripsy.In this study, from March 2013 to February 2014, 180 patients with single urinary calculus were examined using ultrasonography and NCHCT before Holmium laser lithotripsy. The calculus location and size, acoustic shadowing (AS) level, twinkling artifact intensity (TAI), and CT value were all documented...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928809/efficacy-of-medical-expulsive-therapy-in-renal-calculi-less-than-or-equal-to-5-millimetres-in-size
#14
Sudarshan Daga, Vinayak G Wagaskar, Harshawardhan Tanwar, Umesh Shelke, Bhushan Patil, Sujata Patwardhan
PURPOSE: Natural history and modality of treatment for asymptomatic renal calculi less than or equal to 5 millimetres in size is still unknown. Many options are available ranging from medical expulsive therapy to minimally invasive surgery. Till date no study has focussed on this very common but asymptomatic issue. Hence, this study is undertaken to evaluate efficacy of medical expulsive therapy in renal calculi less than or equal to 5mm in size. MATERIALS AND METHODS: A prospective, parallel group, randomized study was carried out from 1st June 2014 to 31st May 2015, with total of 100 patients, 50 patients in each group...
8, 2016: Urology Journal
https://www.readbyqxmd.com/read/27917897/blood-borne-phagocytes-internalize-urate-microaggregates-and-prevent-intravascular-netosis-by-urate-crystals
#15
Elmar Pieterse, Ivica Jeremic, Christine Czegley, Daniela Weidner, Mona H C Biermann, Susan Veissi, Christian Maueröder, Christine Schauer, Rostyslav Bilyy, Tetiana Dumych, Markus Hoffmann, Luis E Munoz, Anders A Bengtsson, Georg Schett, Johan van der Vlag, Martin Herrmann
Hyperuricemia is strongly linked to cardiovascular complications including atherosclerosis and thrombosis. In individuals with hyperuricemia, needle-shaped monosodium urate crystals (nsMSU) frequently form within joints or urine, giving rise to gouty arthritis or renal calculi, respectively. These nsMSU are potent instigators of neutrophil extracellular trap (NET) formation. Little is known on the mechanism(s) that prevent nsMSU formation within hyperuricemic blood, which would potentially cause detrimental consequences for the host...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917808/unenhanced-computed-tomography-findings-of-renal-papillae-in-patients-with-a-ureteral-stone
#16
Selim Serter, Erkan Sahin, Utku Mahir Yildirim, Murat Arslan, Ayhan Karakose
PURPOSE: In some patients with a ureteral stone without uretero-hydronephrosis, it is difficult to determine the location of the stone. The objective of the present study was to investigate the changes in renal papillae using unenhanced computerized tomography (uCT) and determine the side of calculi using the renal papillary findings in patients with a ureteral stone. METHODS: uCT data from 81 patients were retrospectively reviewed for this study. The inclusion criteria were unilateral ureteral calculi, no renal calculi and no hydronephrosis...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917317/flexible-ureteroscopy-for-renal-stone-without-preoperative-ureteral-stenting-shows-good-prognosis
#17
Jiaqiao Zhang, Chuou Xu, Deng He, Yuchao Lu, Henglong Hu, Baolong Qin, Yufeng Wang, Qing Wang, Cong Li, Shaogang Wang, Jihong Liu
PURPOSE: To clarify the outcome of flexible ureteroscopy (fURS) for management of renal calculi without preoperative stenting. METHODS: A total of 171 patients who received 176 fURS procedures for unilateral renal stones were reviewed. All procedures were divided into two groups depending on whether they received ureteral stenting preoperatively. Baseline characteristics of patients, stone burden, operation time, stone-free rates, and complications were compared between both groups...
2016: PeerJ
https://www.readbyqxmd.com/read/27915241/xanthogranulomatous-pyelonephritis-presenting-as-proteus-preperitoneal-abscess
#18
Yuyi Yeow, Yew-Lam Chong
Xanthogranulomatous pyelonephritis (XGPN) is a rare form of chronic pyelonephritis with progressive loss of renal function. Commonly, obstructing urinary calculi are seen. It is difficult to differentiate between XGPN and malignancy in many cases, and the diagnosis is usually only confirmed post-operatively upon histopathological examination of the specimen. Surgical treatment is often the main treatment modality due to suspicion for malignancy. Here, we present a case of XGPN that presented with abdominal distension, which was eventually discovered to be due to a preperitoneal abscess...
December 2, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27913238/contemporary-ureteroscopic-management-of-renal-stones
#19
S Proietti, T Knoll, G Giusti
The advancements in the endourological armamentarium and the evolution of ureteroscopes with the advent of fiberoptic first and then digital technology, the introduction of holmium laser lithotripters, together with the increasing number of requests for minimally invasive procedures has ameliorated outcomes, patients' safety and comfort, making the use of flexible ureteroscopy for urinary calculi increasingly attractive and widespread among urological community. Due to its high stone-free rates and low morbidity, flexible ureteroscopy has become a viable option for the treatment of renal stones...
December 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27909620/is-normal-saline-the-best-irrigation-fluid-to-be-used-during-percutaneous-nephrolithotomy-in-renal-failure-patient-a-prospective-randomized-controlled-trial
#20
Bimalesh Purkait, Manoj Kumar, Ankur Bansal, Ashok Kumar Sokhal, Satya Narayan Sankhwar, Kawaljit Singh
OBJECTIVE: Endoscopic procedures like percutaneous nephrolithotomy (PCNL) needs continuous irrigation for better vision and to wash away stone fragments and blood clots. Systemic absorption of irrigation fluids may lead to fluid overload and electrolyte disequilibrium. Renal failure patients are more prone to these electrolyte disturbances. We have evaluated the outcomes of normal saline as irrigation solution to be used in renal failure patient in comparison to distilled water. METHODS: Seventy-six patients with renal calculi were enrolled in this study between September, 2014, and December, 2015...
December 2016: Turkish Journal of Urology
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