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urinary calculi

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https://www.readbyqxmd.com/read/29026764/a-case-control-study-on-environmental-and-biological-risk-factors-for-renal-calculi-persisting-in-a-coastal-union-territory-india
#1
Prakash Mathiyalagen, Anand Neelakantan, Karthik Balusamy, Kavita Vasudevan, Johnson Cherian, Bhuvaneswary Sunderamurthy
BACKGROUND AND OBJECTIVES: Renal stone disease is a common disorder of the urinary tract and also a significant problem because of incidence, recurrence, and severe consequences. The complex pathogenetic mechanisms of renal stone formation involve both biologic and environmental risk factors. The present study was performed to identify the role of these parameters among renal stone patients and normal individuals from a coastal union territory region in South India. METHODS: The authors conducted a case-control study of renal stone disease among outpatient department patients more than 30 years of age using systematic random sampling procedure with 100 study participants (50 subjects for each group)...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29021652/urine-and-serum-fetuin-a-levels-in-patients-with-urolithiasis
#2
Rajat Arora, Nitin Abrol, B Antonisamy, S Vanitha, J Chandrasingh, Santosh Kumar, Nitin Kekre, Antony Devasia
INTRODUCTION: Fetuin-A is a glycoprotein secreted by liver and has been shown to inhibit extraosseous mineralization. Urolithiasis may be a manifestation in the urinary tract due to fetuin deficiency in urine. The objective of this study was to compare the 24-h urine and serum fetuin-A levels of patients with and without urolithiasis. METHODS: Serum and 24-h urine fetuin-A levels were measured in 41 patients with bilateral, multiple, or recurrent urinary tract calculi (Group A) and 41 matched controls with no calculi (Group B)...
October 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28977111/is-a-safety-guidewire-needed-for-retrograde-ureteroscopy
#3
Wilson Rica Molina, Rodrigo R Pessoa, Rodrigo Donalísio da Silva, Diedra Gustafson, Leticia Nogueira, Alex Meller
INTRODUCTION: It is generally advised to have a safety guidewire (SGW) present during ureteroscopy (URS) to manage possible complications. However, it increases the strenght needed to insert and retract the endoscope during the procedure, and, currently, there is a lack of solid data supporting the need for SGW in all procedures. We reviewed the literature about SGW utilization during URS. METHOD: A review of the literature was conducted through April 2017 using PubMed, Ovid, and The Cochrane Library databases to identify relevant studies...
August 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28976346/-analysis-of-success-predictive-factors-in-the-treatment-of-urinary-lithiasis-by-extracorporeal-shock-wave-lithotripsy-patient-optimization-eswl-score
#4
Pablo Garrido-Abad, Miguel Ángel Rodríguez-Cabello, Arturo Platas-Sancho
OBJECTIVE: Extracorporeal shock wave lithotripsy (ESWL) represents one of the most frequently used methods to treat urinary tract calculi. However, sometimes we do not obtain the fragmentation expected. The aim of this study is to evaluate the parameters that may influence ESWL final results, developing a classification for better patient's selection and outcome optimization. METHODS: 270 patients with renal or ureteral stones were retrospectively reviewed after ESWL treatment, recording both clinical parameters (age, sex, location, laterality, body mass index [BMI]), and CT-Scan parameters (stone size and volume, skin-to-stone distance (SSD), mean and maximal stone density)...
October 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28966022/pediatric-hospitalizations-for-upper-urinary-tract-calculi-epidemiological-and-treatment-trends-in-the-united-states-2001-2014
#5
Parth K Modi, Young Suk Kwon, Rachel B Davis, Sammy E Elsamra, Viktor Dombrovskiy, Ephrem O Olweny
INTRODUCTION: The incidence of urolithiasis in the pediatric population in the United States has steadily been increasing over the past few decades. Few studies to date have examined trends in the hospitalization and inpatient surgical treatment of urolithiasis in the pediatric population using nationally representative data. OBJECTIVE: The aim was to evaluate nationwide trends in the rates of pediatric hospitalization and inpatient surgical activity for upper urinary tract calculi (UUTC) in the United States from 2001 to 2014...
September 7, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28952687/-mineralogical-composition-of-urinary-stones-risk-factors-and-metabolic-disturbances-in-patients-with-calcium-oxalate-urolithiasis
#6
A V Kustov, A I Strelnikov, M A Moryganov, A O Airapetyan, P R Smirnov, E V Lyalyakina, S R Toms
AIM: To identify the most likely metabolic disturbances and risk factors for stone formation in a group of patients with calcium oxalate urolithiasis, and to establish the relationship between the mineralogical composition of calculi and impaired excretion of inhibitors and promoters of stone formation. MATERIALS AND METHODS: Fifty patients with calcium oxalate urolithiasis were tested using a complex of physicochemical methods. Patients assessment included evaluation of quantitative mineralogical composition of calculi, daily urine pH profile and daily urinary excretion of urates, calcium, magnesium, oxalate, phosphate and citrate ions...
September 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28948344/ct-calculometry-ct-cm-advanced-ncct-post-processing-to-investigate-urinary-calculi
#7
Valentin Zumstein, Patrick Betschart, Lukas Hechelhammer, Hans-Peter Schmid, Dominik Abt, Magdalena Müller-Gerbl
PURPOSE: This study aimed at evaluating the potential of CT-calculometry (CT-CM) as a novel method to determine mineralisation, composition, homogeneity and volume of urinary calculi based on preoperative non-contrast-enhanced computed tomography (NCCT) scans. MATERIALS AND METHODS: CT-CM was performed in preoperative NCCTs of 25 patients treated for upper tract urinary calculi by ureterorenoscopy or percutaneous nephrolithotomy. Absolute mineralisation values were achieved by use of quantitative CT-osteoabsorptiometry and compared to Fourier infrared spectroscopy as a reference for stone composition...
September 25, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28933510/-unusual-case-of-struvite-urolithiasis-in-a-dog-a-case-report-ein-fallbericht
#8
Julia K Mack, Ellen Kienzle
A dog was referred for nutrition consultation after surgical removal of struvite uroliths from the bladder. Inspection of the dog's current ration revealed a pronounced vitamin-A deficiency together with a marked deficiency of protein, phosphorus and magnesium. Therefore, a supersaturation of the urine with ammonium, magnesium and phosphate, the three constituents of struvite, as a cause of struvite calculi formation appears rather unlikely. Vitamin-A deficiency can promote urinary infections and consequently struvite stone formation because of the lack of the protective effect of vitamin A on the epithelia of the urinary tract...
September 20, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28933020/deriving-a-management-algorithm-for-emphysematous-pyelonephritis-can-we-rely-on-minimally-invasive-strategies-or-should-we-be-opting-for-earlier-nephrectomy
#9
Eve Boakes, Deepak Batura
PURPOSE: To analyse the incidence and management of emphysematous pyelonephritis (EPN) in North West London and examine factors that influence immediate and 6-month outcomes with the aim of guiding future management. METHODS: This work analyses EPN cases from the London North West Healthcare NHS Trust from October 2006 to July 2015 (population ≈ 850,000). Diagnosis and stage were confirmed by computed tomography (CT). Demographic, clinical, biochemical and microbiological characteristics were assessed...
September 20, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28932691/percutaneous-nephrolithotomy-ileal-conduit-lithotripsy-and-litholapaxy-for-a-neglected-encrusted-ureteral-stent
#10
Andrés Gutierrez, Julián Chavarriaga, María A Ocampo, Carlos Hernandez
Urolithiasis can result as a complication of urinary diversión, favored by urinary stasis, intestinal mucus, urinary tract bacteriuria, the metabolic derangements and the presence of foreign bodies. We present a 52- year-old male who underwent radical cystectomy with construction of a Bricker uretero-ileostomy. 5 years later he was found with a forgotten ureteral stent, a 6 cm calculi occupying the whole ileal conduit and a 13 mm calculi in the left renal pelvis. We present our experience in the successful endourological management of an encrusted neglected ureteral stent in an ileal conduit, achieving a stone-free status without complications...
November 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28913357/the-association-of-uric-acid-calculi-with-obesity-prediabetes-type-2-diabetes-mellitus-and-hypertension
#11
Fang-Yeh Chu, Chih-Chun Chang, Pin-Hao Huang, Yi-Ning Lin, Po-Wen Ku, Jen-Tang Sun, Jung-Li Ho, Tzung-Hai Yen, Ming-Jang Su
OBJECTIVES: To disclose the link between the composition of urolithiasis, especially that of uric acid calculi, and obesity, prediabetes, type 2 diabetes mellitus, and hypertension. MATERIALS AND METHODS: Patients who had urinary calculi and underwent surgical treatment were registered in the study. The composition of urinary calculi was analyzed and correlated with clinical features and biomedical profiles of the patients before surgical intervention. RESULTS: A total of 666 patients with urolithiasis who underwent surgical management were registered and analyzed...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28912989/vaginal-urinary-calculi-formation-secondary-to-vaginal-mesh-exposure-with-urinary-incontinence
#12
Kara M Griffiths, Geoffrey D Towers, Jerome L Yaklic
BACKGROUND: Vaginal stones may form in the setting of mesh exposure with urinary incontinence. This report serves to help understand the presentation, evaluation, and management of vaginal urinary stones. CASE: A 68-year-old female presented with a vaginal calculus. She had a history of anterior and posterior polypropylene mesh placement for prolapse 7 years earlier and urinary incontinence. The stone was identified on a portion of exposed mesh and removed in office...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28912866/compositional-analysis-of-various-layers-of-upper-urinary-tract-stones-by-infrared-spectroscopy
#13
Zhang He, Zhang Jing, Zheng Jing-Cun, Hu Chuan-Yi, Gao Fei
The objective of the present study was to determine the composition of various layers of upper urinary stones and assess the mechanisms of stone nucleation and aggregation. A total of 40 integrated urinary tract stones with a diameter of >0.8 cm were removed from the patients. All of the stones were cut in half perpendicularly to the longitudinal axis. Samples were selected from nuclear, internal and external layers of each stone. Fourier transform infrared spectroscopy (FT-IR) was adopted for qualitative and quantitative analysis of all of the fragments and compositional differences among nuclear, internal and external layers of various types of stone were subsequently investigated...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28892967/bilateral-single-system-orthotopic-ureterocele-with-bilateral-multiple-calculi-presented-with-retention-of-urine-an-urological-emergency
#14
Rupesh Gupta, Sweta Gupta, Dawood Khan, Supriya Basu
The ureterocele is an uncommon congenital anomaly of the lower ureter. Ureterocele with a single pelvicalyceal system, bilateral, and orthotopic variety is less common. Calculi within bilateral ureterocele are a rare occurrence. To the best of our knowledge, only a few similar cases have been reported in the literature. Among the all reported presentations of this type of ureterocele, presentation with Acute Urinary Retention (AUR) has not been described in the literature. We present a case of nine-year-old child having bilateral, single system orthotopic ureterocele with calculi in bilateral ureterocele and presented with AUR due to obstructive bulbar urethral calculus...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28889140/multiple-bilateral-renal-abscesses-in-a-previously-healthy-young-patient
#15
R Y Tang, B M Cheong
The incidence of renal abscesses is not common. Patients usually have risk factors like diabetes mellitus or an underlying condition which predisposes to urinary tract infections. We report a case of a previously healthy young girl with multiple bilateral renal abscesses. Ultrasonography revealed multiple renal abscesses with a possible differential diagnosis of polycystic kidney disease with infected cysts. No renal calculi were seen. CT-scan of kidneys confirmed the diagnosis. Blood and urine cultures were repeatedly negative...
August 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28874183/urethral-calculi-with-a-urethral-fistula-a-case-report-and-review-of-the-literature
#16
Mingqiang Zeng, Fanchang Zeng, Zhao Wang, Ruizhi Xue, Liang Huang, Xuyu Xiang, Zhi Chen, Zhengyan Tang
BACKGROUND: To explore and summarize the reasons why urethral calculi cause a urethral fistula. CASE PRESENTATION: We retrospectively studied 1 patient in Xiangya hospital and all relevant literature published in English between 1989 and 2015. The patients (including those reported in the literature) were characterized by age, origin, location of calculus, size of calculus, fistulous track, and etiological factors. Most of urethral calculi associated with a urethral fistula were native generated...
September 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28845939/-experience-in-ureteroscopy-for-managing-urolithiasis-in-one-clinic-when-does-quantity-transform-into-quality
#17
V Yu Ivanov, V A Malkhasyan, I V Semenyakin, D Yu Pushkar
INTRODUCTION: In recent years, there has been an increasing role of ureteroscopy in managing urinary tract calculi of various locations. Several studies have reported the relationship between the efficacy and safety of ureteroscopic interventions and surgeons skills and hospital caseload volume. The aim of our study was to assess the effectiveness of urethroscopic stone removal, the changes in treatment effectiveness, frequency and types of complications along with gaining experience in these interventions...
July 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28845007/-advantages-of-foley-catheter-for-nephrostomy-tube-after-minimally-invasive-percutaneous-nephrolithotomy
#18
Xiaoqiong Zhang, Xifeng Liu, Weiping Xia, Feng Zeng
To assess the advantages and nursing experience of foley catheter for nephrostomy tube after minimally invasive percutaneous nephrolithotomy (mPCNL).
 Methods: From October 2015 to April 2016, the clinical data of 137 patients, who were diagnosed with upper urinary tract calculi and need to perform mPCNL, were collected and randomized into 2 groups: a foley catheter group (research group, n=69) and a normal nephrostomy tube group (control group, n=68). The patients in research group used foley catheter for nephrostomy tube, while those in the control group used normal nephrostomy tube...
July 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28834450/frequency-of-angiomyolipomas-among-echogenic-nonshadowing-renal-masses-4-mm-found-at-ultrasound-and-the-utility-of-mri-for-diagnosis
#19
Suresh de Silva, Ross Copping, David Malouf, Anthony Hutton, Fiona Maclean, Peter Aslan
OBJECTIVE: The purpose of this study is to evaluate what percentage of echogenic nonshadowing renal lesions larger than 4 mm found at ultrasound are angiomyolipomas (AMLs) and to review how to diagnose AMLs, with particular emphasis on the increasing role played by MRI. MATERIALS AND METHODS: The study data were obtained at a single institution over a period of 45 months. Although some patients were being reviewed for specific symptoms, such as hematuria, pain, or recurrent urinary tract infections, most of the findings were incidental...
August 23, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28821388/a-case-control-analysis-investigating-risk-factors-and-outcomes-for-nephrocalcinosis-and-renal-calculi-in-neonates
#20
Melissa Huynh, Roderick Clark, Jenny Li, Guido Filler, Sumit Dave
INTRODUCTION: Studies on outcomes and risk factors for neonatal nephrocalcinosis (NC) and renal calculi (RC) are limited, and often do not include controls for comparison. We conducted a case-control analysis to identify risk factors associated with NC and/or RC in neonates and studied the natural course of these anomalies. STUDY DESIGN: Infants diagnosed with NC/RC on ultrasound within the first year of life and corresponding gestational age- and gender-matched controls were identified from the neonatal intensive care unit database at our institution over a 10-year period...
August 2017: Journal of Pediatric Urology
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