View clinical trials related to Calculi.
Filter by:Flexible ureteroscopy is a recent procedure to treat renal stone. Extracorporeal shockwave lithotripsy was the gold standard treatment for calculi between 5 and 20 mm. In literature, the two procedures are available to treat these stones with a good stone free rate. There is no prospective randomized study comparing these two treatments. Our study will define with a good level of evidence which technique is the best with regard to the stone free rate, secondary procedure rate and adverse effect.
Kidney stone disease affects almost 10% of overall population, often requiring a surgical intervention. Currently, shock wave lithotripsy is considered a first-line treatment option for patients suffering from symptomatic kidney stones smaller than 2.0 cm, providing reasonable stone-free rate. Actually, the outcomes from SWL vary largely due to several factors including stone burden, stone density, stone-skin distance (SSD), and patient's body habitus. Furthermore, the imaging exam modality (i.e. ultrasound versus computed tomography scan) performed to assess the presence of residual fragments also impacts on SWL outcome analysis. We aim to perform a well-controlled prospective evaluation of all variables that may impact on fragmentation and clearance of lower pole calculi after SWL. These variables are assessed exclusively by a noncontrast computed tomography scan (NCCT), eliminating the necessity of an intravenous urography to study renal collecting system anatomy; an imaging exam that is not routinely performed anymore for kidney stone patients.
Bile duct stones that can't be removed by conventional means can often be removed after fragmentation by shock waves (lithotripsy). The shock waves that are used for fragmentation of these stones are generated by electric sparks (electrohydraulic lithotripsy) or laser (laser lithotripsy). Although both techniques have been used for many years, there are no studies comparing the efficacy of the two. The purpose of this study is to find out which technique is more effective.
The purpose of this study is to evaluate the efficacy and the safety of silodosin in urinary calculi patients.
Performing an EUS prior to ERCP in the setting of a positive intraoperative cholangiogram will identify and risk stratify patients for the presence of CBD stones and strictures.
Ureteroscopy (URS) is minimally invasive procedure for management of renal stones. URS is often involves concomitant of an indwelling ureteral stents. Placements of these stents include pain, bladder irritability, infection, migration, encrustation and stones. Pain is one of most significant problem of ureteral stents. There are no satisfactory measures to deal with this problem. A novel approach to manage the pain is to load a drug onto ureteral stent and deliver the drug into the urinary tract at controlled release rate. Lidocaine has been proven to be effective for management of the pain associated with interstitial cystitis. This agent has the potential for management of post-URS pain.
The investigators will investigate the safety and effectiveness of an Iranian traditional medicine regarding its ability to dissolve existing kidney stones. Calcium stone formers will be recruited for a 12 week trial. Each subject will receive Lapis judaicus or placebo in random order. End points are changes in urinary chemistries and stone burden by Ultra sonography / CT scan. It will be used in proven calcium stone forming adults who are not pregnant. This phase is a double blind, randomized, placebo controlled Entry, first and 12 week 24 hour urine supersaturations, pH and sodium determinations will be collected. Entry and final stone quantification Ultra sonography / CT scan will be performed. End points will be changes in urine chemistry/supersaturation and stone quantitative stone volume.
Outpatient tubeless Percutaneous nephrolithotomy (PCNL) could potentially improve patient care and result in significant cost savings for our hospital each year. If this pilot study is successful, Queen's/KGH will lead a collaborative national multicentre trial to further establish the role of this new approach in the surgical treatment of kidney stones.
This study will sought to determine if limited urine collections can provide similar or more informative data than standard 24-hour urine collections used to evaluate kidney stone formers.
More specifically, the present invention relates to a 'Herbal Preparation' that is useful for - Treatment of Renal calculi - Reduction in the stone size & surface area - The expulsion of stone - Decreased need of Analgesic(Antiinflammatory Effect) - Stops the recurrence and reformation of renal