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

Launched by BENHA UNIVERSITY · Mar 15, 2025

Keywords

ClinConnect Summary

This clinical trial is designed to compare two different techniques for removing kidney stones from a specific area in the kidney called the lower calyx. The two methods being studied are called Flexible & Navigable Suction Ureteral Access Sheath (FANS) and Antegrade Suction. The goal of the study is to see which method is more effective at removing stones, reducing the time of the procedure, and minimizing any complications like bleeding or infections. The trial will involve 120 adult patients who have kidney stones that are between 1.5 and 2 cm in size.

To participate in this trial, individuals must be at least 18 years old and have been diagnosed with the right size kidney stones through a specialized scan. They should not have any active urinary infections and must give their consent to join the study. However, certain people, such as those with specific kidney problems, pregnant women, or those with serious bleeding issues, will not be eligible to participate. If you qualify and choose to take part, you will undergo a procedure using one of the two suction techniques to help remove the stones. This trial is currently not recruiting participants yet, but it aims to provide important information about the best ways to treat lower calyceal stones.

Gender

ALL

Eligibility criteria

• 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