Active clinical trials for "Ureteral Calculi"

compare the outcomes of SWL for renal and upper lumbar ureteric stones using the alternating bidirectional approach versus the standard approach.

This is a randomized double blind placebo-controlled study that will assess the efficacy of Tamsulosin oral-controlled absorption system (OCAS) 0.4 mg in the conjunctive medical treatment of distal ureteral stones with a size of 4-10 mm compared to placebo in control group.

The goal of this study is to conduct a prospective controlled trail of four currently approved Department of Defense (DOD) - formulary medications for use as medical expulsion therapy (MET) for kidney stones. Between 8% and 15% of Americans will develop symptomatic urolithiasis in there life. Several medications, including steroids, calcium channel blockers, alpha-adrenergic antagonists and non-steroidal anti-inflammatory drugs, have been utilized to aid in the spontaneous passage of distal ureteral calculi. Recently, use of selective alpha-blockers has shown promise for medical expulsion therapy (MET) of distal ureteral calculi. None of these studies have been widely publicized outside the specialty of urology. Recent studies have shown a success rate of nearly 90% when the selective alpha-blocker tamsulosin (Flomax) was used for MET. MET has also been shown to result in a decreased narcotic requirement, shorter time to stone passage, and reduced requirement for further interventions. The investigators will evaluate the effectiveness of MET as initial management for kidney stones using DOD-approved formulary medications.

To estimate the efficacy of tamsulosin in: A - Expulsion of lower ureteric stones from10-15 mm diameters (primary goal). B - Pain relief and hyronephrosis improvement (secondary goal).

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 investigator aims to perform a prospective and randomized controlled trial evaluating the safety and efficacy of External Physical Vibration Lithecbole(EPVL) in treating 4-10 mm ureteral stone.

The present study is randomized in nature, comparing the stone free rate and complications rate between semi-rigid ureteroscopy (SR-URS) and Flexible Ureteroscopy (F-URS) for the treatment of Proximal Ureteric stone (PUS), whereby the preoperative assessments, procedure and reporting of outcomes will all be standardized.

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.

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

The use of Laryngeal masks are increased.This study aimed to compare lma pro seal and baska -mask in urethral retrograde sistoscopy operations.