Loading clinical trials...
Loading clinical trials...
Showing 1-20 of 43 trials
NCT07514351
Improvements in ureteroscopes have led to improved stone free rates. Two new devices (FANS - Flexible and Navigable Suction) and the CVAC ureteroscope have never been compared head to head. This trial will compare these two new suction ureteroscope technologies against each other
NCT06269783
The purpose of this study is to clarify the fundamental processes underlying behavior change, maintenance, and adherence during and after a 3-month fluid intake intervention period.
NCT07349992
This prospective cohort study aims to compare the safety and efficacy of retrograde intrarenal surgery combined with a high-power Holmium:YAG laser and flexible navigable suction access sheath versus mini-percutaneous nephrolithotomy in patients with 2-3 cm renal stones.
NCT06635889
Post-operative pain and lower urinary tract symptoms are common following ureteroscopy in the treatment of stone disease. The use of bupivacaine as a topical pain medication is used routinely for other urologic procedures, however, to date there are no studies that have rigorously investigated the effect of instilling bupivacaine in the bladder following ureteroscopy. This is a randomized study that will investigate the effect of instilling bupivacaine in the bladder following routine ureteroscopy, laser lithotripsy and ureteral stenting in the treatment of stone disease. Compared to a placebo of Normal Saline, our study hypothesizes that administration of topical bupivacaine in the bladder will decrease post-operative pain and lower urinary tract symptoms while improving quality of life in the early post-operative period.
NCT04669886
The aim of the study is to establish an infectious risk stratification system based on pre-and post-operative blood endotoxin profile.
NCT07126847
Patients presenting to the emergency department with symptoms suggestive of renal colic will be included in the study at Kocaeli City Hospital's emergency department. Patients with nephrolithiasis considered among the preliminary diagnoses will be enrolled in the study; demographic data, vital signs, and physical examination findings will be recorded on pre-prepared standard data forms. STONE criteria scores will be calculated by emergency assistants, and bedside ultrasound will be performed for patients. Ultrasonographic findings suggestive of renal colic, such as hydronephrosis, the presence of primary stones, acoustic shadowing of the stone, the presence of twinkle artifact, presence of jet flow, and presence of bladder debris, will be evaluated, and the obtained data will be recorded on the standard data form by the performing assistant physician. In patients where computed tomography, which is the gold standard for detecting stone presence without intervention, is deemed appropriate without any intervention to the primary examining physician, the computed tomography results and ultrasound findings will be compared. The study aims to evaluate the effectiveness of bedside ultrasound application in diagnosing stone presence in patients, its success in predicting re-admission to the hospital within 1 month, its success in predicting possible alternative diagnoses and complications, in addition to the stone criteria applied in the patients.
NCT06576661
The goal of this study is to evaluate the influence of real-time intrarenal pressure measurement availability on surgeons' behavior during ureteroscopy while using the ureteroscope LithoVue Elite.
NCT07087977
Mini percutaneous nephrolithotripsy is the treatment of choice for kidney stones over 2cm. This procedure commonly uses laser energy for breaking the stones, and among possible laser platforms, Hoyag and thulium fiber laser are FDA approved. Recently, this procedure has also included the use of vacuum assisted renal access sheaths, which allows suction to be employed together with the breaking of stones. This study intends to compare outcomes when using either laser platforms with suction sheaths in participants undergoing mini percutaneous nephrolithotripsy for the treatment of kidney stones.
NCT06966635
To evaluate whether alkalization has the effect of lowering uric acid and reducing gout flare and determine whether alkalization has a role in the prevention and treatment of urinary calculi in gout, the research participants were divided into the control group, the potassium citrate group and the sodium bicarbonate group. 2 alkalization groups took potassium citrate three times a day 2.16g each time, or sodium bicarbonate three times a day, 1.0g each time, on the basis of the standard uric acid-lowering treatment plan. The control group was treated with the standard uric acid-lowering treatment regimen alone. Uric acid-lowering treatment plan: Maintain the individualized uric acid-lowering treatment plan at the time of patient enrollment. Traditional uric acid-lowering treatment plans include drugs that reduce uric acid production such as febuxostat and allopurinol, and drugs that increase uric acid excretion such as benzbromarone. At the time of enrollment, the uric acid-lowering drugs were stable.
NCT03692715
This is a two arm, double blind RCT comparing the use of a single dose ciprofloxacin prior to SWL to saline alone. The multicenter trial will be conducted with a pragmatic emphasis including both high volume and low volume sites internationally.
NCT06862141
Urinary calculus is a globally recognized urological condition, with prevalence rates ranging from 1% to 13% across different geographical regions (1) Therapeutic approaches for renal calculi encompass extracorporeal shock wave lithotripsy (ESWL) and minimally invasive endoscopic surgical techniques, such as percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS). Treatment plans depend on the characteristics of calculi, patient factors, surgeon experience and the condition of medical centers. According to the guidelines of American Urologic Association (AUA) and European Association of Urology (EAU), patients with a burden of less than 20 mm in kidney calculi can choose RIRS as the frst-line surgical treatment with good stone-free rate (SFR). (2, 3) The application of RIRS for urinary stones has increased signifcantly, and the indications have expanded due to developments in minimally invasive technology and equipment. (4) With the development of stone retrieval devices and miniaturized fexible ureteroscopes, RIRS is more widely used for treating renal calculi, even for high burden stones. (5, 6) The application of ureteral access sheath (UAS) in RIRS can improve surgical vision, reduce intrarenal pressure (IRP), and decrease postoperative infectious complications. (7-9) Several reports have demonstrated the superiority of suctioning UAS, including shorter operation time, higher SFR and lower incidence of infectious complications compared with traditional ureteral access sheath, but none of these suctioning UAS can reach the renal calyces. (10-12) A novel tip-flexible suctioning ureteral access sheath with flexible terminal was designed, which delivered the tip of the ureteral access sheath to renal calyces. However, data comparing novel tip-flexible suctioning ureteral access and traditional ureteral access sheath is lacking in RIRS. Therefore, we designed a prospective controlled analysis to compare the efficacy and safety of novel tip-flexible suctioning ureteral access sheath and traditional ureteral access sheath combined with flexible ureteroscope (FURS) in treating renal calculi.
NCT02829060
This study will be a multi-institutional randomized clinical trial of a short course of pre-operative antibiotic prophylaxis in addition to perioperative antibiotics prior to undergoing percutaneous nephrolithotomy. The select patient population will be those patients deemed to be at a moderately increased risk of postoperative infectious complications. These higher risk patients are those with indwelling urinary drainage tubes and those with a positive preoperative urine culture.
NCT05014178
The corticomedullary gradient is largely responsible for developing the gradients that are needed to concentrate urine (more solutes and less water). The ability of the kidneys to produce concentrated urine is a major determinant of the ability to survive the warm weather. When temperatures are high, we lose water through sweat, and so the kidneys retain water to maintain fluidity in the blood. The maintenance of a sodium (salt) gradient is required for urine concentration because increased medullary sodium concentration increases the reabsorption of water into the kidney, to be redistributed in the blood. The purpose of this study is to know if the corticomedullary gradient is altered in patients across a wide spectrum of kidney disease using sodium Magnetic Resonance Imaging (MRI), a machine that takes pictures and measures the salt content in the kidneys. 23Na kidney MRI, will provide functional MR of the kidney as a non-invasive tool to describe medullary function to improve management of chronic and kidney disease.
NCT04505956
Flexible ureteroscopy is characterized as first-line therapy for the treatment of renal stones \< 2 cm in size. This involves passing a flexible endoscope into the renal pelvis through the urethra, bladder and ureter in a retrograde fashion. Holmium: YAG laser remains the preferred energy modality to subsequently break stones of this size into fragments small enough to remove or pass spontaneously through the ureter. Advances in the understanding of laser energy delivery have led to the recent commercialization of the "Moses Effect" - the creation of vapor bubbles/cavities between the laser fiber tip and the target through which laser energy can more efficiently travel. Lumenis was the first to optimize this laser phenomenon and market it as "Moses Technology" in their Lumenis Pulse P120H laser system. This system is already FDA approved through the 510K pathway and is commercially available. The purpose of this study is to evaluate the potential of Moses laser technology to reduce operative time compared to non-Moses settings for ureteroscopic treatment of nephrolithiasis.
NCT04389853
The prevalence of nephrolithiasis is increasing over the last two decades, and kidney stones is a recurrent disorder, with lifetime recurrence risks reported to be as high as 50%. One of the most challenging stones is the lower pole (LP) nephrolithiasis. The standard management of lower pole stones (LPS), is still controversial especially for stones smaller than 20 mm, with retrograde intrarenal surgery (RIRS) and mini-PCNL (miniperc) both demonstrated to be safe and effective methods for treating LPS with a diameter of 1-2 cm. Selecting the optimal modality for treating renal calculi is challenging, as both techniques may be associated with different patient benefits and risk profiles. Despite the evolution of mini-PCNL and fURS techniques into clinical practice, there is a lack of comparative clinical data assessing SFRs and complication rates. To the investigators' knowledge, no previous studies have addressed the outcome of ambulatory tubeless miniperc as a same day procedure, which this study will look to assess. The investigators are planning to discharge all participants home the night of surgery, without admission or insertion of nephrostomy tube. This will decrease the morbidity of miniperc and encourage head-to-head comparison with fURS in a prospective randomized protocol.
NCT04746378
This study is intended to be a prospective registry of patients undergoing any kind of stone treatment that have a pre-operative CT available. This imaging will be used to measure the stone burden in three different ways: in a single dimension (cumulative stone diameter), in two dimensions (surface area) and in three dimensions (volume).The primary purpose is to identify what way of measuring stone burden is most predictive of outcomes after stone treatment such as stone free status, operative time and complications.
NCT06288022
Limited literature has focused on the use of totally tubeless mini-percutaneous nephrolithotomy (Mini-PCNL) for the treatment of large renal stones. This Randomized Controlled trial aims to compare complication and safety of Mini-PCNL between total tubeless and tubeless Mini-PCNL.
NCT04285658
The goals of this study are to improve the ability of pediatric patients and their caregivers to select surgical treatment options for kidney stones and to enable urologists to use techniques that result in the best outcomes for these surgeries.
NCT03057431
The investigators plan to assess the efficacy of standard and low dose HCTZ treatment in the recurrence prevention of calcium-containing kidney stones. More specifically, the investigators aim to assess the dose-response relationship for three different dosages of HCTZ. Study intervention: HCTZ 12.5 mg, 25 mg or 50 mg once daily per os for 24 or 36 months. In addition, all patients in HCTZ treatment arms will receive state-of-the-art non-pharmacologic recommendations for stone prevention according to current guidelines. Control intervention: Placebo once daily per os for 24 to 36 months. In addition, all patients in the placebo arm will receive state-of-the-art non-pharmacologic recommendations for stone prevention according to current guidelines.
NCT05845281
The primary purpose of this study was to compare the effects of erector spinal plane block (ESP) and IV patient-controlled analgesia (PCA) performed to provide analgesia in percutaneous nephrolithotomy surgeries on visual analog skala (VAS), additional analgesia need, patient satisfaction and mobilization times.