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Kidney Calculi clinical trials

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NCT ID: NCT00860093 Terminated - Nephrolithiasis Clinical Trials

Efficacy and Safety of Using MPC-5971 in Subjects Undergoing Shock Wave Lithotripsy

Start date: April 2010
Phase: Phase 2
Study type: Interventional

The purpose of this study is to evaluate the efficacy of MP-5971 in facilitating stone passage after Shock Wave Lithotripsy treatment.

NCT ID: NCT00859170 Terminated - Kidney Stones Clinical Trials

Use of Antiretropulsion Device in Laser Lithotripsy

Start date: February 2009
Phase: N/A
Study type: Interventional

The objectives of this post-market evaluation are 1. to assess the capacity of the procedure to be completed with use of only a semi-rigid ureteroscope, without requiring use of a flexible ureteroscope 2. to compare the rate of retropulsion and the time required to complete the lithotripsy in patients in which the Accordion device is used in contrast to when such a device is not employed.

NCT ID: NCT00581178 Terminated - Kidney Stones Clinical Trials

Study to Determine if There Are Specific Clinical Factors to Determine Stent Encrustation

Start date: April 2008
Phase: N/A
Study type: Observational

Ureteral stent placement is one of the most common procedures performed within urology. The stents are generally placed for relief of obstruction or to prevent obstruction following a urological procedure. Most patients with ureteral stents will eventually form stent encrustations. However, patients form these encrustations at dramatically different degrees and rates ranging from no encrustation at 1 year of stenting to severe encrustation in just a few weeks. The purpose of this study is to determine if the degree of encrustation on a stent for any given patient can be predicted based on 24 hour urine parameters prior to stent placement, with the stent in place and after stent removal. Patients who will be receiving stents for other urological reasons will have a 24 hour urine sample collected before stent placement, while the stent is in place and after the stent has been removed. The parameters examined in the 24 hour urine collected will then be compared to the amount of encrustation there is on the stent to see if there is any correlation between the two.

NCT ID: NCT00288457 Terminated - Kidney Stones Clinical Trials

Ureteral Stent Length and Patient Symptoms

Start date: February 2006
Phase: N/A
Study type: Observational

The Study of whether or not Ureteral Stent Length affects patient comfort after electro-shock wave treatment for kidney stones.

NCT ID: NCT00149305 Terminated - Nephrolithiasis Clinical Trials

Genetic Study of Nephrolithiasis in Gouty Diathesis

Start date: May 2005
Phase:
Study type: Observational

Gouty diathesis describes uric acid or calcium oxalate nephrolithiasis and low urinary pH (<5.5). A hereditary component has been outlined for several forms of nephrolithiasis (such as hypercalciuria, hyperoxaluria, cystinuria, renal tubular acidosis), leading to the hypothesis of a genetic predisposition to nephrolithiasis. At the Unit of Nephrology, Ospedali Riuniti di Bergamo, more than 100 patients affected by gouty diathesis are followed. Fifty percent of them has a familiarity for kidney stones formation. The aim of our study is to identify the genetic factors that predispose to the development of nephrolithiasis in patients with gouty diathesis.