Using a flexible suction sheath with flexible ureteroscopy for lower-pole kidney stones
Outcomes of Using Flexible and Navigable Suction Sheath With Flexible Ureteroscopy in Treatment of Lower Calyceal Stones: A Prospective Study
This trial will test whether adding a flexible, navigable suction sheath to flexible ureteroscopy helps adults with lower-pole kidney stones become stone-free more often and avoid repeat procedures.
Quick facts
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 33 (estimated) |
| Ages | 18 Years and up |
| Sex | All |
| Sponsor | Zagazig University Government |
| Locations | 1 site (Zagazig) |
| Trial ID | NCT07238803 on ClinicalTrials.gov |
What this trial studies
The trial will enroll adult patients with lower calyceal (lower-pole) kidney stones who are scheduled for flexible ureteroscopy (fURS). During the procedure, surgeons will use a flexible, navigable suction ureteral access sheath alongside the fURS to aspirate stone fragments. Key outcomes include postoperative stone-free status, need for secondary interventions, and infectious or bleeding complications; standard exclusions include active urinary infection, coagulopathy, and renal or ureteric anomalies. Procedures and follow-up imaging will be performed at Zagazig University Hospitals to capture procedure success and complications.
Who should consider this trial
Good fit: Adults aged 18 years or older with lower calyceal kidney stones who are scheduled for flexible ureteroscopy and do not have active UTI, coagulopathy, or renal/ureteric anomalies.
Not a fit: Patients with active urinary tract infections, bleeding disorders, renal or ureteric anatomical anomalies, or those who decline participation are unlikely to benefit from this protocol.
Why it matters
Potential benefit: If successful, using a navigable suction sheath could raise stone-free rates, reduce the need for repeat procedures, and lower some procedure-related complications.
How similar studies have performed: Early reports and registry data suggest vacuum-assisted or suction ureteral sheaths can improve stone-free rates and reduce residual fragments, but high-quality randomized evidence is still limited.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Adult patients ≥ 18 years old. 2. Patients with lower calyceal stones scheduled for FURS. Exclusion Criteria: 1. patients with active urinary tract infections. 2. Patients with renal and ureteric anomalies. 3. patients with coagulopathy 4. patients who are refusing to participate.
Where this trial is running
Zagazig
- Zagazig University Hospitals — Zagazig, Egypt (Recruiting)
Study contacts
- Study coordinator: Mahmoud Ahmed Lasheen, Resident
- Email: ma.ahmed24@fakmed.zu.edu.eg
- Phone: +201069524468
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.