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Ureteral Stents for Kidney Stones

N/A

Recruiting

Led By Stephen Nakada, MD, FACS, FRCS

Research Sponsored by University of Wisconsin, Madison

Eligibility Criteria Checklist

Specific guidelines that determine who can or cannot participate in a clinical trial

Must have

Patients with renal or ureteral urinary stones who require endoscopic treatment and stent placement in the outpatient operating room.

Be older than 18 years old

Must not have

Patients with transplant kidneys

Patients who have stent placed before surgery.

Timeline

Screening 3 weeks

Treatment Varies

Follow Up pre-operative visit (baseline), the stent removal 1-2 weeks after surgery (up to 4 weeks on study), and one post-operative visit 3-6 weeks after surgery (up to 10 weeks on study)

Awards & highlights

No Placebo-Only Group

Summary

This trial tests different types of stents after ureteroscopy to treat urinary stones, with 192 participants studied for up to 10 weeks.

Who is the study for?

This trial is for patients with kidney or ureteral stones needing endoscopic treatment and stent placement. It's not for pregnant individuals, those with transplant kidneys, irreversible coagulopathy, known ureteral strictures, planned staged procedures, or pre-surgery stents.

What is being tested?

The study compares postoperative symptoms from three types of ureteral stents after laser lithotripsy: a smaller 4.8Fr Tria stent and two larger ones - a 6Fr Percuflex and a 6Fr Tria. Participants are randomly assigned to one of these options.

What are the potential side effects?

Potential side effects may include discomfort while urinating, blood in urine, lower back pain due to the presence of the stent, urinary urgency or frequency, and possible infection risks.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below

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I need a procedure for kidney or ureter stones that involves placing a stent.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:

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I have a transplanted kidney.

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I have had a stent placed before undergoing surgery.

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I have a permanent blood clotting disorder.

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I have a known condition of narrowed ureters.

Timeline

Screening ~ 3 weeks3 visits

Treatment ~ Varies

Follow Up ~ at time of stent removal 1-2 weeks after surgery (up to 4 weeks on study)

Screening ~ 3 weeks

Treatment ~ Varies

Follow Up ~at time of stent removal 1-2 weeks after surgery (up to 4 weeks on study)

This trial's timeline: 3 weeks for screening, Varies for treatment, and at time of stent removal 1-2 weeks after surgery (up to 4 weeks on study) for reporting.