Active clinical trials for "Kidney Calculi"

The investigators objective is to study if some drugs can improve the success rate of extracorporeal shockwave lithotripsy for renal stones.

In latest literature more evidence is available about the positive effect of alpha blocker on stone expulsion from the ureter. Patients benefit from less pain and shortening time to stone expulsion. Our study is design to evaluate whether alfuzosin improves the stone free out come following SWL.

Purpose: to investigate the postoperative outcomes of Retrograde intrarenal surgery versus percutaneous nephrolithotomy in 2 to 4 cm kidney stones.

This is a prospect, randomized control trial to evaluate merits between microperc and FURS for lower pole renal stone

A prospective study comparing different laser settings used for stone fragmentation during ureteroscopy

The purpose of this study is to compare two established modalities for the treatment of kidneystones: ESWL (extracorporal shockwave-lithotripsy) vs. URS (uretero-reno-scopy with stone-extraction). Comparison of the stone-free rates 3month postoperative. Trial with surgical intervention

A total of 20 subjects presenting with urinary stone(s) in the kidney or ureter will be treated with an extracorporeal shockwave lithotripsy device to fragment the stones. Subjects will be followed for 14 days. If at the 14 day follow-up visit the subject continues to present with a stone size 4 mm or greater will have an option of retreatment or other intervention. If the subject consents to be retreated at this time, this subject will be followed up for another 14 days.

Is it possible to decrease the intrarenal pressure in the kidney during endoscopic management of kidney stone by topical administration of drugs? In order to secure fewer complications in ureteroscopic operations the pharmacological agent isoproterenol is tested on pigs and human to determine its potential of lowering intrarenal pressure.

Historically, percutaneous treatment of stone-bearing caliceal diverticula has resulted in the best success rates when examining factors such as symptom relief and stone-free rates (Jones, et al, 1991). Many groups have reported modifications in their percutaneous approach which have reportedly improved patient outcomes, but these series have very limited populations. Another issue concerning stone-bearing caliceal diverticula centers on the etiology of stones formation within these areas. This topic remains a subject of debate, with conflicting data in the literature.

This study is a prospective, randomized multicenter study conducted in Europe. It is designed to compare two double loop ureteral stents in terms of the quality of life in patients operated on a kidney stone and requiring the placement of a double loop ureteral stent at the end of the operation.