Active clinical trials for "Kidney Calculi"

Double J (DJ) Stenting is a commonly done procedure in endourology to ensure ureteric patency following Urological Interventions. DJ stents are available in various sizes. This study is focused on comparing two different sizes of DJ Stents, one standard sized 6Fr and other small sized 4Fr. DJ stents are uncomfortable to the patients and few studies have indicated that small size of stents are might be less troublesome. Through this study we plan to establish a relation between different symptoms and size of DJ stents. Study will be conducted at Tribhuvan University Teaching Hospital (TUTH),Maharajgunj.All adults with sterile urine culture prior to stenting will be taken into consideration. Informed consent will be taken and two randomized groups of 6Fr and 4Fr will be formed and data entry done in MS Excel and analysis done by SPSS. The study is expected to take duration of 12months. Ureteral Stent Symptom Questionnaire (USSQ) will evaluate the symptoms on third day and seventh day of stent placement and on Day of stent removal. We expect 4Fr stent to be superior to 6Fr for reduction of stent related symptoms.

This study is designed to provide an evaluation of currently available disposable flexible ureteroscopes in real-world conditions. Due to high re-processing costs associated with re-usable flexible ureteroscopes, there has been a demand for Urologic device manufacturers to provide single-use flexible ureteroscopes.

The purpose of this study is to implement and assess a standard way of prescribing opioid pain medication following PCNL (a kidney stone removal surgery) to ensure patients are being discharged with an appropriate quantity of pain management medication.

The urotheliasis is a common problem encountered daily by all urologists worldwide with rates up to 13% in North America, 9% in Europe and 5% in Asia . The urotheliasis is treated by conservation, medical treatment and surgery according to many factors . Anomalies in the kidney happens due to failure in ascending , fusion, rotation or all together, horse-shoe kidney is the most common example , found in one of 400 patients . PCNL and URS are the golden standard method for stone extraction worldwide, since their introduction 1975 by Fernstrom and Johansson & Arthur Smith respectively in normal kidney .Since the development of the endourological procedures and instrument , continuous updates and upgrades have been applied ,such as enhancing the optical systems ,reducing the diameter, navigation (deflection angles) and stone fragmentation .Stone treatment in anomalous kidney is more demanding, requires more skills and training . The flexible ureterorenoscopy has some problems first the cost but this problem is being now solved by the use of disposable scopes , second the skills it requires , third the possibility of sepsis is higher . To our knowledge most of the studies in the literature are retrospective, carrying some weakness in them. There is no agreed-upon therapeutic method for treatment of stones in anomalous kidney so the investigators will evaluate the role of F-URS in a prospective study.

Randomized comparison of patient outcomes following standard PCNL versus mini-PCNL.

This study will test whether oxalate stimulates urinary crystals and impacts the immune system in healthy subjects using two controlled diets (low and high oxalate).

It is aimed to evaluate the treatment results, rates of success and complications, and injury given to the kidney by measuring preoperative and postoperative blood urea, creatinine, Cystatin C and Netrin-1 levels and urine Cystatin C and Netrin-1 levels in patients with lower pole or renal pelvis stone(s) undergoing either one of the treatment modalities including conventional percutaneous nephrolithotripsy (PCNL), mini PCNL, ultra-mini PCNL, micro PCNL, retrograde intrarenal surgery (RIRS) and extracorporeal shock wave lithotripsy (ESWL).

Current prevention strategies in patients with recurrence of kidney stones show especially in high-risk patients a diversely and in the long-term not successful outcome in a sustainable number of cases. Recent studies have revealed that Dapagliflozin has the potential to decrease risk and incidence of urolithiasis events especially in patients suffering from Diabetes. The investigators propose that Dapagliflozin has the potential to increase the metabolic situation of hyperoxaluric patients with recurrence of urolithiasis. The investigators therefore test whether Dapagliflozin can decrease the oxalate excretion compared to the current strategy with Hydrochlorothiazide. The study may open up a new way of preventing urolithiasis in patients with high-risk of recurring urolithiasis.

We believe that kidney donors with kidney stones accepted for a donation do not have an increased risk of loss of kidney function and will not be at increased risk of symptomatic kidney stone events compared to donors without a history of kidney stones.

The purpose of this study is to determine the natural history of the hereditary forms of nephrolithiasis and chronic kidney disease (CKD), primary hyperoxaluria (PH), cystinuria, Dent disease and adenine phosphoribosyltransferase deficiency (APRTd) and acquired enteric hyperoxaluria (EH). The investigator will measure blood and urinary markers of inflammation and determine relationship to the disease course. Cross-comparisons among the disorders will allow us to better evaluate mechanisms of renal dysfunction in these disorders.