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

NCT00581178 | Terminated

• 1 other identifier: 2007-5818
• Study Type: observational
• Target: 16
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Kidney Stones

Keywords

Ureteral Stent; Kidney Stones

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

All patients who will undergo surgery where a ureteral stent will likely be placed will be offered enrollment into this study.

You may qualify if:

• Patient at UCI
• Scheduled to undergo surgery (standard of care) where ureteral stent will be placed

You may not qualify if:

• minors

Sponsors & Collaborators

• University of California, Irvine: lead
• Labcorp Corporation of America Holdings, Inc: collaborator

Study Sites (1)

University of California, Irvine Medical Center

Orange, California, 92868, United States

Location

MeSH Terms

Conditions

Kidney Calculi

Condition Hierarchy (Ancestors)

Nephrolithiasis; Kidney Diseases; Urologic Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Urolithiasis; Urinary Calculi; Male Urogenital Diseases; Calculi; Pathological Conditions, Anatomical; Pathological Conditions, Signs and Symptoms

Study Officials

• Ralph Clayman, MD

  University of California, Irvine

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Urology Account Contact

Study Record Dates

• First Submitted: December 19, 2007
• First Posted: December 27, 2007
• Study Start: April 1, 2008
• Primary Completion: December 1, 2011
• Study Completion: December 1, 2011
• Last Updated: June 26, 2013

Record last verified: 2013-06

Locations

US (1)