The Effect of Different Body Positions and Channel Sheaths on RIRS

Recruiting now · Not applicable

Conditions studied: Urolithiasis

In brief

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.

Key facts

Study ID

NCT06438497

Run by

The First Affiliated Hospital of Guangzhou Medical University

People needed

120

Starts

2024-05-23

Expected to finish

2024-11-01

Last updated by the study team

2024-09-24

Who can join

Age: 18 and older, up to 70. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• LPS with a diameter of 10-20 mm
• American Society of Anesthesiologists(ASA) score Ⅰ,Ⅱ and Ⅲ
• Adult patients

You may not qualify if…

• Ureteric stricture
• Urethral deformity
• Renal malformation, including horseshoe kidney, ectopic kidney and transplanted kidney
• Pregnancy
• Multiple stones in diferent calyces, including upper pole and middle pole

Where it is running

• Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University — Guangzhou, Guangdong, China (enrolling)

Full record on ClinicalTrials.gov

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