Journal ArticleJ Urol · September 20, 2024
PURPOSE: To ensure that research on kidney stones provides meaningful impact for the kidney stone community, patients and caregivers should be engaged as stakeholders in clinical trial design, starting at study inception. This project aimed to elicit, refi ...
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Journal ArticleUrolithiasis · August 6, 2024
Patients with ureteral stones are often managed with a spontaneous trial of passage. While cost effective, the current literature has not examined the effects of a trial of passage on patients' work productivity. In this study, we aim to characterize work ...
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Journal ArticleUrology · June 2024
OBJECTIVE: To evaluate the change in overall clinical encounter time and clinical capacity after transitioning to single-use cystoscopes (Ambu A/S, Ballerup, Denmark) in an outpatient urology setting. METHODS: A single-institution prospective study in an o ...
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Journal ArticleBJU Int · February 2024
OBJECTIVES: To explore the optimal laser settings and treatment strategies for thulium fibre laser (TFL) lithotripsy, namely, those with the highest treatment efficiency, lowest thermal injury risk, and shortest procedure time. MATERIALS AND METHODS: An in ...
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Journal ArticleJ Endourol · December 2023
Purpose: Patients with recurring kidney stone events can expect significant morbidity and functional impairment. Few studies have evaluated the effect of bilateral kidney stones on disease progression and quality of life. We wanted to determine the associa ...
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Journal ArticleUrolithiasis · November 2, 2023
To investigate stone ablation characteristics of thulium fiber laser (TFL), BegoStone phantoms were spot-treated in water at various fiber tip-to-stone standoff distances (SDs, 0.5 ~ 2 mm) over a broad range of pulse energy (Ep, 0.2 ~ 2 J), frequency (F, 5 ...
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Journal ArticleUrology · August 2023
OBJECTIVE: To describe the experiences of patients undergoing stent removal in the USDRN Study to Enhance Understanding of Stent-Associated Symptoms (STENTS), a prospective, observational cohort study of patients with short-term ureteral stent placement po ...
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Journal ArticleJ Endourol · August 2023
Objective: Low energy and high frequency settings are used in stone dusting for holmium lasers. Such settings may not be optimal for thulium fiber laser (TFL). With the seemingly endless combination of settings, we aim to provide guidance to the practicing ...
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Journal ArticleJ Endourol · June 2023
Purpose: Ureteral stents are commonly used after ureteroscopy and cause significant discomfort, yet qualitative perspectives on patients' stent experiences remain unknown. We describe psychological, functional, and interpersonal effects of post-ureteroscop ...
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Journal ArticleJ Urol · May 2023
PURPOSE: The STudy to Enhance uNderstanding of sTent-associated Symptoms sought to identify risk factors for pain and urinary symptoms, as well as how these symptoms interfere with daily activities after ureteroscopy for stone treatment. MATERIALS AND METH ...
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Journal ArticleJ Palliat Med · February 2023
Patients receiving palliative care (PC) can present with or develop a host of urological needs or complications. These needs can include attention to sexual health, urinary incontinence, genitourinary bleeding, and urinary tract obstruction by benign, mali ...
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Journal ArticleJ Endourol · January 2023
Objective: Potassium citrate effectively decreases kidney stone recurrence, but it is costly and associated with side effects. While several over-the-counter supplements and medical foods purport to provide sufficient citrate to prevent recurrent stones, c ...
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Journal ArticleJ Endourol · November 2022
Introduction: Percutaneous nephrolithotomy (PCNL) is the preferred treatment for kidney stones >2 cm. While PCNL has traditionally been performed using 24F to 30F access sheaths, there is a trend toward smaller sheaths and scopes to perform mini-PCNL (mPCN ...
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Journal ArticleJ Endourol · October 2022
Introduction: With a 5-year stone recurrence rate of 30% to 50%, kidney stone formers are subject to significant morbidity that negatively impacts their health-related quality of life (HRQOL). We sought to determine the impact of age at kidney stone onset, ...
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Journal ArticleJ Urol · September 2022
PURPOSE: The treatment of stones ureteroscopically is associated with postoperative pain, thought to be due largely to the use of ureteral stents. In some, stent removal precipitates renal colic that can last from minutes to hours. We sought to determine i ...
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Journal ArticleBMC Urol · April 6, 2022
BACKGROUND: Our objective was to describe day-to-day evolution and variations in patient-reported stent-associated symptoms (SAS) in the STudy to Enhance uNderstanding of sTent-associated Symptoms (STENTS), a prospective multicenter observational cohort st ...
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Journal ArticleJ Endourol · March 2022
Introduction: Ureteroscopy (URS) is associated with substantial patient-perceived morbidity. To improve the patient experience, we developed an enhanced recovery after surgery (ERAS) protocol for URS. We sought to determine if an ERAS protocol could reduce ...
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Journal ArticleUrolithiasis · August 2021
To evaluate the impact of chronic stone recurrence on an individual's quality of life using the validated Wisconsin Stone Quality of Life (WISQOL) questionnaire. We collected cross-sectional data on patients with kidney stones from 14 institutions in North ...
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Journal ArticleBJU Int · July 2021
OBJECTIVE: To build the Wisconsin Stone Quality of Life Machine-Learning Algorithm (WISQOL-MLA) to predict urolithiasis patients' health-related quality of life (HRQoL) based on demographic, symptomatic and clinical data collected for the validation of the ...
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Journal ArticleJ Endourol · June 2021
Background: Ureteral stents are commonly employed after ureteroscopy to treat urinary stone disease, but the devices impose a substantial burden of stent-associated symptoms (SAS), including pain and urinary side effects. The NIDDK (National Institute of D ...
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Journal ArticleAm J Kidney Dis · June 2021
RATIONALE & OBJECTIVE: Although maintaining high fluid intake is an effective low-risk intervention for the secondary prevention of urinary stone disease, many patients with stones do not increase their fluid intake. STUDY DESIGN: We describe the rationale ...
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Journal ArticleUrology · March 2021
OBJECTIVE: To evaluate factors associated with simple nephrectomy at a safety net hospital with a diverse patient population and large catchment area. Simple nephrectomy is an underreported surgery. Performance of simple nephrectomy may represent a failure ...
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Journal ArticleInt Braz J Urol · 2021
PURPOSE: We aimed to assess failure rates of salvage interventions and changes in split kidney function (SKF) following failed primary repair of ureteropelvic junction obstruction (UPJO). MATERIALS AND METHODS: A retrospective review of adult patients at a ...
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Journal ArticleJ Ultrasound Med · January 2021
OBJECTIVES: To report results from a quality improvement (QI) project evaluating diagnostic performance, hospital resource use, and patient response data for postoperative contrast-enhanced ultrasound (CEUS) antegrade nephrostogram after percutaneous nephr ...
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Journal ArticleEur Urol · December 2020
Delayed evaluation and/or treatment for urolithiasis during the COVID-19 pandemic provide a unique opportunity to organically reassess many well-established stone management strategies. Nonopioid analgesia for renal colic and spontaneous passage trials app ...
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Journal ArticleJ Endourol · November 2020
Purpose: Metabolic syndrome (MetS) is a cluster of metabolic diseases that is linked to atherosclerotic cardiovascular disease. MetS has also been linked to increased nephrolithiasis. However, limited research has been conducted on MetS and its impact on s ...
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Journal ArticleJ Endourol · September 2020
Introduction: Despite proven effectiveness of medications in preventing stone recurrence, compliance with pharmacotherapy (PT) is often poor because of cost, side effects, and impact on lifestyle. We sought to compare the risk of stone recurrence between p ...
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ConferenceJ Am Coll Surg · July 2020
BACKGROUND: Some, but not all, patients with primary hyperparathyroidism (PHPT) and kidney stone disease (KSD) are cured of their nephrolithiasis after parathyroidectomy. The goal of this study was to identify risk factors for recurrent KSD despite success ...
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Journal ArticleCanadian Urological Association Journal · January 1, 2020
Introduction: Urolithiasis causes a significant impact on health-related quality of life (HRQOL). Patients with kidney stones have high levels of stress and anxiety. Symptom resolution often requires treatment. Travel distance is a barrier to care but litt ...
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Journal ArticleEur Urol · November 2019
CONTEXT: Medical expulsive therapy (MET) for ureteral stones has become a controversial area due to the contradictory results of high-quality trials and meta-analyses. OBJECTIVE: We aimed to review the literature to evaluate the value of and future directi ...
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Journal ArticleJ Urol · August 2019
PURPOSE: Kidney stone formers have lower health related quality of life than nonstone formers. The North American Stone Quality of Life Consortium is a multicenter, longitudinal, prospective study of health related quality of life in patients with kidney s ...
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Journal ArticleJ Urol · July 2019
PURPOSE: Kidney stones are a source of significant morbidity which have been shown to negatively impact health related quality of life. We sought to understand the association between health related quality of life, socioeconomic status and race among pati ...
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Journal ArticleJ Urol · December 2018
PURPOSE: To our knowledge it is unknown whether the benefits of medical management of urolithiasis outweigh the potential side effects of the medications used, including potassium citrate and thiazide diuretics. Therefore, we evaluated the relationship bet ...
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Journal ArticleAbdom Radiol (NY) · November 2018
PURPOSE: To assess the non-inferiority of dual-layer spectral detector CT (SDCT) compared to dual-source dual-energy CT (dsDECT) in discriminating uric acid (UA) from non-UA stones. METHODS: Fifty-seven extracted urinary calculi were placed in a cylindrica ...
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Journal ArticleJ Urol · February 2018
PURPOSE: An accurate urinary predictor of stone recurrence would be clinically advantageous for patients with cystinuria. A proprietary assay (Litholink, Chicago, Illinois) measures cystine capacity as a potentially more reliable estimate of stone forming ...
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Journal ArticleJ Urol · May 2017
PURPOSE: WISQOL (Wisconsin Stone Quality of Life questionnaire) is a disease specific, health related quality of life measure designed for patients who form kidney stones. The purpose of this study was to demonstrate the external and convergent validity of ...
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Journal ArticleUrolithiasis · April 2017
Preventing dehydration in subjects at risk may provide a means of primary prevention of kidney stones. The purpose of this pilot study was to assess the hydration status of an at-risk group of steel plant workers based on end-of-shift ('post-shift') spot u ...
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Journal ArticleJ Endourol · November 2016
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 percutaneous nephrolithotomy (PCNL). We previously reported o ...
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Journal ArticleJ Endourol · May 2016
BACKGROUND AND PURPOSE: With the extensive documentation afforded by our electronic medical record (EMR), we observed an unusually high number of patient-initiated encounters following ureteroscopy (URS). We sought to quantify and categorize patient encoun ...
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Journal ArticleCurr Opin Urol · May 2016
PURPOSE OF REVIEW: Urinary stone disease is a condition characterized by a rich history of surgical innovation. Herein, we review the new ideas, devices and methods that are the cornerstones of contemporary surgical innovation in stone disease, specificall ...
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Journal ArticleJ Endourol · March 2016
OBJECTIVE: Robot-assisted laparoscopic prostatectomy (RALP) with suprapubic tube (SPT), compared to urethral catheter (UC) drainage, has been proposed to improve patient comfort and recovery. We sought to compare short-term outcomes for pain and morbidity ...
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Journal ArticleJ Endourol · May 2015
PURPOSE: Our study sought to demonstrate the effects of remote ischemic preconditioning (R-IPC) on renal function in a large animal (porcine) solitary-kidney model. METHODS: Twelve pigs were assigned to two groups: Each underwent a right nephrectomy follow ...
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Journal ArticleWorld J Urol · February 2015
Dietary factors have been shown to influence urine composition and modulate the risk of kidney stone disease. With the rising prevalence of stone disease in many industrialized nations, dietary modification as therapy to improve lithogenic risk factors and ...
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Journal ArticleJ Urol · January 2015
PURPOSE: Flexible ureteroscopy is rapidly becoming a first line therapy for many patients with renal and ureteral stones. However, current understanding of treatment outcomes in patients with isolated proximal ureteral stones is limited. Therefore, we perf ...
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Journal ArticleJ Endourol · December 2014
PURPOSE: We developed a novel device to capture stones in vivo in an enclosed bag (PercSac) to prevent dispersion of stone fragments during percutaneous nephrolithotomy (PCNL) or cystolitholapaxy. We report on our initial feasibility trials of the PercSac ...
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Chapter · November 1, 2014
Prevention of stone disease is the key to breaking the cycle of recurrence, patient suffering, and mounting costs. Dietary modifications are an attractive means to prevent stone formation because they are generally well tolerated and inexpensive. Although ...
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Journal ArticleEur Urol · October 2014
BACKGROUND: The prevalence of urolithiasis and its risk factors such as obesity and diabetes have increased over time. OBJECTIVE: Determine the future cost and prevalence of kidney stones using current and projected estimates for stones, obesity, diabetes, ...
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Journal ArticleJ Endourol · March 2014
INTRODUCTION: Unlike percutaneous radiofrequency ablation (RFA) of small renal tumors, there are limited data assessing the long-term efficacy of laparoscopic RFA. Although the ablation cannot be visualized as reliably as with cryoablation, laparoscopic RF ...
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Journal ArticleJ Endourol · December 2013
BACKGROUND AND PURPOSE: The development of effective preventive therapy for renal calculi in patients with secondary hyperoxaluria (2°HO) relies on establishing the pattern of normal variation in urinary oxalate (uOx) and attempting to reduce it. Therefore ...
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Journal ArticleEur Urol · September 2013
BACKGROUND: Conventional laparoscopic nephrectomy (LN) is the gold standard approach for nephrectomy. An advance in minimally invasive nephrectomy is laparoendoscopic single-site nephrectomy (LESS-N). OBJECTIVE: To compare 5-yr experience and outcomes of L ...
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Journal ArticleProstate · May 2013
BACKGROUND: Resveratrol increases lifespan and decreases the risk of many cancers. We hypothesized resveratrol will slow the growth of human prostate cancer xenografts. METHODS: SCID mice were fed Western diet (40% fat, 44% carbohydrate, 16% protein by kca ...
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ConferenceCancer Causes Control · May 2013
PURPOSE: Epidemiological data are conflicting regarding the association between androgenetic alopecia (AA) and prostate cancer (CaP). We examined the relationship between these two conditions. MATERIALS AND METHODS: We performed a case-control study at a V ...
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Journal ArticleCancer · April 1, 2013
BACKGROUND: Exercise is a modifiable lifestyle risk factor associated with prostate cancer risk reduction. However, whether this association is different as a function of race is unclear. In the current study, the authors attempted to characterize the link ...
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Journal ArticleUrol Clin North Am · February 2013
Percutaneous nephrolithotomy (PCNL) is the most morbid of the minimally invasive surgeical procedures for stone removal. Over the last 2 decades, refinements in technique and new technology have improved the efficacy and the efficiency of the procedure. Al ...
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Chapter · January 1, 2013
Shockwave lithotripsy (SWL) is one of the most consistently utilized procedures for the treatment of upper urinary tract stones. SWL was initially applied widely as a treatment for upper tract stones until the limitations of the technology became apparent. ...
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Journal ArticleJ Appl Physiol (1985) · July 2012
The purpose of this study is to investigate the effects of exercise on cancer progression, metastasis, and underlying mechanisms in an orthotopic model of murine prostate cancer. C57BL/6 male mice (6-8 wk of age) were orthotopically injected with transgeni ...
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Journal ArticleJ Urol · July 2011
PURPOSE: Augmentation cystoplasty has replaced urinary diversion as the cornerstone of surgical management of refractory neurogenic bladder in patients with spina bifida. Other than single institution series little is known about practice patterns of bladd ...
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Journal ArticleProstate Cancer Prostatic Dis · December 2010
Caloric restriction (CR) has been shown to have anti-cancer properties. However, CR may be difficult to apply in humans secondary to compliance and potentially deleterious effects. An alternative is intermittent CR, or in the extreme case intermittent fast ...
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Journal ArticleUrology · November 2010
OBJECTIVES: To analyze the association between cigarette smoking and biochemical recurrence (BCR) after radical prostatectomy among men from the Shared Equal Access Regional Cancer Hospital (SEARCH) cohort. METHODS: We performed a retrospective analysis of ...
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Journal ArticleCancer Prev Res (Phila) · September 2010
Previous studies indicate that carbohydrate intake influences prostate cancer biology, as mice fed a no-carbohydrate ketogenic diet (NCKD) had significantly smaller xenograft tumors and longer survival than mice fed a Western diet. As it is nearly impossib ...
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Journal ArticleJ Urol · April 2010
PURPOSE: Previous mouse studies suggesting that low fat diets slow prostate cancer growth often used corn oil (omega-6), which enhances prostate cancer growth, as the primary fat. Using a saturated fat based diet we previously found no significant differen ...
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Journal ArticleJ Urol · November 2009
PURPOSE: Epidemiological and molecular evidence suggest potential associations between exercise and prostate cancer risk reduction. We further characterized this relationship by examining exercise and cancer risk among men undergoing prostate needle biopsy ...
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Journal ArticleProstate Cancer Prostatic Dis · 2009
Exercise has been increasingly investigated as an adjunct therapy for cancer patients. The purpose of this paper is to comprehensively review the literature regarding exercise as a therapeutic adjunct for prostate cancer (PC). Several studies in patients w ...
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Journal ArticleCancer · September 15, 2008
BACKGROUND: Disagreement exists on the use of prostate-specific antigen (PSA) tests for cancer-risk stratification in young men in the United States. Little is known about the use of PSA testing in these men. To understand policy implications of risk strat ...
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Journal ArticleTransplantation · May 27, 2003
BACKGROUND: Ischemia-reperfusion injury has been established as a nonimmunologic risk factor for the development of chronic graft nephropathy after renal transplantation. This objective of this study was to determine if oral administration of an endothelin ...
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Journal ArticleTransplantation · July 27, 2002
BACKGROUND: Preretrieval warm ischemic injury predisposes to both short-term and long-term dysfunction of cadaveric renal allografts. We previously reported that the excretion of the vasoactive peptide, endothelin (ET), is significantly increased during hy ...
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