Comparison of Polaris Ultra Ureteral Stent and Tria Firm Ureteral Stent on Deposition of Encrustation Following Short-Term Placement: A Prospective, Single-blind, Randomized Controlled Trial.

Phase 4

• Conditions: Patients with urolithiasis

• Registration Number: JPRN-UMIN000037006
• Lead Sponsor: Department of Urology and Andrology, Kansai medical university

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2019-06-20
• Study Completion: 2019-10-30
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: Complete: follow-up continuing
• Sex: All
• Target Recruitment: 80

Inclusion Criteria

Not provided

Exclusion Criteria

1.Patients potentially requiring ureteric stent placement for >14 days postoperatively 2.Patients requiring antibiotics use prior to URS due to the presence of urinary tract infection 3.Pregnant 4.Patients with difficulty of communication 5.patients who have been determined to be unsuitable as a subject by a physician

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Encrustation volume in inner wall of the ureteral stent (mm3)

Secondary Outcome Measures

Name	Time	Method
1. Intraluminal obstruction rate (%) (at the narrowest point of the stent) 2. Outerwall stent encrustation volume (mm3) 3. Outerwall stent encrustation-sectional volume: proximal/body/distal (mm3) 4. Hydronephrosis grade before removal of stents 5. Stent-related complications (Dislodgment, migration, UTI, readmission etc.) 6. Stone composition (stone fragments, encrustation stone)