Not Yet RecruitingNot Applicable

Comparison of Flexible & Navigable Suction Ureteral Access Sheath vs. Antegrade Suction in Retrograde Flexible Ureteroscopy for Lower Calyceal Stones

120 participantsStarted 2025-03-30

Plain-language summary

This randomized controlled trial aims to compare the efficacy and safety of two suction techniques during retrograde flexible ureteroscopy (FURS) for lower calyceal renal stones measuring 1.5-2 cm. The study evaluates Flexible \& Navigable Suction Ureteral Access Sheath (FANS) versus Antegrade Suction (via percutaneous access) in improving stone-free rates (SFR), reducing operative time, and minimizing complications such as bleeding, ureteral injury, and infection. A total of 120 adult patients will be randomized into two groups, undergoing either flexible ureteroscopy (FURS) with Flexible \& Navigable Suction Ureteral Access Sheath (FANS) or flexible ureteroscopy (FURS) with antegrade suction, at Banha University Faculty of Medicine.

Who can participate

Age range18 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Adult patients (≥18 years old) * Patients diagnosed with renal stones (1.5-2 cm) confirmed by non-contrast computed tomography (NCCT) * Patients undergoing flexible ureteroscopy (FURS) as the primary treatment approach * Patients with no active urinary tract infection (UTI) at baseline * Patients who provide written informed consent Exclusion Criteria: * Patients with anatomical anomalies (e.g., horseshoe kidney, PUJ obstruction) * Patients with a single functioning kidney * Pregnant women * Patients with a history of urological malignancy * Patients with active bleeding disorders or those on anticoagulant therapy that cannot be safely discontinued * Patients at high risk for anesthesia

What they're measuring

Stone-Free Rate (SFR)

Timeframe: 1 Month Postoperative

Trial details

NCT IDNCT06889051

SponsorBenha University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2026-03-30

Contact for this trial

Tamer Diab, MD

01003583264 tamer.diab@fmed.bu.edu.eg