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The Effect of Different Body Positions and Channel Sheaths on RIRS
Sponsor: The First Affiliated Hospital of Guangzhou Medical University
Summary
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.
Official title: The Effect of Different Body Positions and Channel Sheaths on Retrograde Intrarenal Stone Surgery(RIRS) Treatment of Lower Pole Renal Stones: a Randomized Controlled Trial
Key Details
Gender
All
Age Range
18 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
120
Start Date
2024-05-23
Completion Date
2024-11
Last Updated
2024-09-24
Healthy Volunteers
No
Conditions
Interventions
RIRS with f-UAS, lateral position
In this intervention, patients were placed on operating table in lateral position. The coronal plane of the patient body was perpendicular to the operating table. The upper limbs were extended and fxed with brackets. A f-UAS is placed under the pelvi-ureteric junction (PUJ) in RIRS. The tip of the UAS has good flexibility and deformability. It can passively bend with the bending of the flexible ureteroscope (f-URS).
RIRS with f-UAS, lithotomy position
In this intervention, patients were placed on operating table in lithotomy position. This position is common and standard. A f-UAS is placed under the pelvi-ureteric junction (PUJ) in RIRS. The tip of the UAS has good flexibility and deformability. It can passively bend with the bending of the flexible ureteroscope (f-URS).
RIRS with traditional UAS, lateral position
In this intervention, patients were placed on operating table in lateral position. The coronal plane of the patient body was perpendicular to the operating table. The upper limbs were extended and fxed with brackets. A traditional UAS is placed under the pelvi-ureteric junction (PUJ) in RIRS.
RIRS with traditional UAS, lithotomy position
In this intervention, patients were placed on operating table in lithotomy position. This position is common and standard. A traditional UAS is placed under the pelvi-ureteric junction (PUJ) in RIRS.
Locations (1)
Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University
Guangzhou, Guangdong, China