Active clinical trials for "Kidney Calculi"

The investigators propose a pilot clinical trial on the use of perioperative pregabalin in order to decrease ureteral stent related symptoms and decrease opioid usage after ureteroscopy with stent placement. Patients undergoing ureteroscopy with stent placement will receive a single dose of 300 mg pregabalin PO in the preoperative area. This work will assess safety and feasibility of studying this regimen at our institution, with the aim of performing a randomized, placebo-controlled, double-blinded study in the future.

The investigators aimed to evaluate whether these parameters could be guides for us in the selection of RIRS or Mini-PNL procedures in kidney stones that are smaller than 2 cm. The patients that have kidney stones smaller than two cm and be planned to undergo surgery were randomized into 2 groups prospectively. RIRS was performed in the RIRS group using a 7.5-F fiberoptic flexible ureterorenoscope while Mini-PCNL group was dilated up to 16.5F and mini-PCNL was performed with 12F nephroscopy. Preoperative characteristics, operative and postoperative results were compared in two groups. Thereafter, intra and intergroup comparisons were made to determine the effects of HU value, indicating the stone density, higher or less than 677 and the stone location on stone-free rates.

The goal of this [ type of study:]prospective randomized clinical trial. The main question is to compare the outcomes of mini-percutaneous nephrolithotomy (m-PCNL) and retrograde intrarenal surgery (RIRS) in treating upper urinary tract calculus in children ≤ 10 years.

Extracorporeal shock wave lithotripsy (ESWL) is accepted as the first treatment choice for most urinary stones. Still, it has adverse effects on the kidneys. The mechanism underlying the shock wave induced renal injury is not entirely understood, and oxidative stress has been speculated to be involved in this process. The Investigator evaluated the role of allopurinol, which works as a xanthine oxidase inhibitor and free radical scavenger in renal protection against oxidative effects of ESWL. In a randomized, double-blind placebo-controlled trial, a total of 70 patients with renal stones undergoing ESWL were randomly assigned to 2 groups. Group 1 receive allopurinol, and group 2 receive a placebo. Allopurinol 300mg was given orally for a total of 3 days, beginning a day before ESWL. The urinary excretion of malondialdehyde (MDA), nitric oxide (NO), and kidney injury molecule-1 (KIM-1) were determined by quantitative double antibody sandwich direct ELISA at baseline before ESWL then repeatedly two h, and 24 h after ESWL. The resistive index (RI) change of the interlobar artery was asses along with the measurement of the shear wave velocity (SWV) in the focal zone of the treated kidney before, two weeks, and four weeks after ESWL. Multivariate analyses were performed using repeated measure ANOVA to control covariates.

Double blinded randomized controlled clinical trial to assess the impact of intraoperative Toradol on post-operative pain scores for patients undergoing ureteroscopy for urinary stone management.

Evaluate the safety, tolerability, and efficacy of 28 days of treatment with ALLN-177 for reducing urinary oxalate excretion in patients with secondary hyperoxaluria and kidney stones.

Extracorporeal shock wave lithotripsy (ESWL) and Percutaneous nephrolithotomy (PCNL) become the therapy of choice for renal stone. Although providing good results, stone recurrence is usually found as the therapies do not change the underlying metabolic abnormality. Among the metabolic disorders, hypocitraturia is an important risk factor for calcium nephrolithiasis. This study evaluate the preventive effects of potassium sodium citrate on stone recurrence as well as stone growth post ESWL or PCNL, in patients with calcium-containing stones.

To determine if emergency department patients with acute ureteral colic pain due to a ureteral stone who are treated with tamsulosin, versus placebo, will experience a shorter time to passage of their stone or resolution of their pain. A secondary study objective will be to determine if there is a relationship between response to tamsulosin and stone size or position in the ureter.

The purpose of the study is to examine the effect of endoluminally administrated isoproterenol on pelvic pressure increase during flexible ureterorenoscopy in 14 humans. We propose that isoproterenol has potential of reducing intrarenal pressure during ureterorenoscopies. Lower intrarenal pressures may have the advantage of facilitating the procedure and reducing intraoperative complications as bleeding and infections.

This is a prospective randomized study, comparing quality of life in renal stone patients undergoing surgical treatment with ureteroscopy (URS) versus percutaneous nephrolithotomy (PNL).