Evaluating Postoperative Pain After Ureterorenoscopy. (STENTIMENT)

Lukas J Hefermehl

Status: Enrolling

Conditions: Ureteral Stones

Treatments: Other: No Double-J catheter insertion; Procedure: Double-J catheter

Study type: Interventional

Funder types: Other

Identifiers

NCT07283003

2025-00665

Details and patient eligibility

About

Comparison of routine postoperative stenting versus no stenting after ureterorenoscopy for ureteral stones to assess the necessity and impact on complication risk.

Full description

After a ureteroscopy (URS) for the removal of ureteral stones, a double-J stent is routinely placed. Among other measures, this is intended to prevent pain caused by ureteral swelling, small residual fragments, blood clots, and potential drainage obstructions, which could lead to colic or fever. However, the evidence supporting the benefit of this practice is limited. At the same time, many patients report discomfort due to the stent (e.g., flank pain, dysuria, frequent urination, hematuria), which can significantly impact their quality of life.

Enrollment: 60 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age 18 years or older
• Patients with ureteral stones scheduled for ureteroscopy (URS) and stone removal
• Previous pre-stenting
• Informed Consent as documented

Exclusion criteria

• Complex ureteral conditions (e.g., known ureteral strictures)
• Impacted stones
• Solitary kidney
• Patients with significant renal stones (>3mm)
• Previous ureteral surgeries (except endoscopic stone treatments)
• Pregnancy or suspected pregnancy

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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60 participants in 2 patient groups

No-Stent Group

Active Comparator group

Description:

No postoperative double-J catheter following ureterorenoscopy.

Treatment:

Other: No Double-J catheter insertion

Stent Group

Active Comparator group

Description:

Routine postoperative double-J catheter insertion following ureterorenoscopy.

Treatment:

Procedure: Double-J catheter