The Effect of Different Body Positions and Channel Sheaths on RIRS

Retrograde flexible ureteroscopy (RIRS) is currently the first-line treatment for renal stones \< 2cm. Lower pole renal stones(LPS) are a difficult problem for urologists. The flexible negative pressure suction ureteral sheath(f-UAS) can facilitate RIRS to flush out the fragments and dust in time, and provide a clear vision and reduce the renal pelvis pressure(RPP) during operation.Standard lithotomy position is the most commonly used position for RIRS. Besides, T-tilt position is also available for RIRS in special cases. Investigators were inspired by this and proposed the lateral position, which is available in cases of LPS.In long-term practice, investigators have found that the change of position and the use of f-UAS can improve stone-free rate(SFR). Investigators aimed to conduct a prospective randomized controlled trial to compare the SFR of different positions and different ureteral sheaths.

NCT Number	NCT06438497
Lead Sponsor	The First Affiliated Hospital of Guangzhou Medical University
Conditions	Urolithiasis
Enrollment	120 participants
Start Date	2024-05-23
Primary Completion	2024-11 (estimated)
Study Completion	2024-11 (estimated)
Updated on ClinicalTrials.gov	2024-09-24