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

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

Status
Terminated
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT00581178
Enrollment
16
Registered
2007-12-27
Start date
2008-04-30
Completion date
2011-12-31
Last updated
2013-06-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney Stones

Keywords

Ureteral Stent, Kidney Stones

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.

Interventions

None listed

Sponsors

Labcorp Corporation of America Holdings, Inc
CollaboratorINDUSTRY
University of California, Irvine
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

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

Exclusion criteria

* minors

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026