Clinical Research Directory
Browse clinical research sites, groups, and studies.
Patient-Reported Stent Symptom Outcomes and Migration Rates Following Modified Single-J Ureteric Stent Insertion After Ureteroscopy
Sponsor: Austin Health
Summary
This study investigates whether a modified Single-J ureteric stent (SJS) is a safe and better-tolerated alternative to the standard Double-J stent (DJS) following ureteroscopy (URS) for kidney and ureteric stone disease. Standard DJS are routinely placed after URS but frequently cause significant patient discomfort, including urinary urgency, frequency, pain, and haematuria. The SJS is created by modifying a commercially available Bander Ureteral Diversion Stent - retaining the proximal renal coil but removing the distal bladder loop - with the aim of reducing these lower urinary tract symptoms while maintaining adequate ureteric drainage and positional stability. Eligible participants are adults aged 18 or older who are already pre-stented with a DJS and are scheduled for elective URS at Austin Health (Austin Hospital or Heidelberg Repatriation Hospital, Melbourne, Australia). At the time of URS, the existing DJS is replaced with the modified SJS. Participants complete a validated symptom questionnaire - the Ureteral Stent Discomfort Test (USDT) - both before URS (with DJS in situ) and at the time of stent removal approximately two weeks later (with SJS in situ), enabling a direct within-patient comparison. Stent migration is assessed cystoscopically at removal. The study aims to enrol 40 participants over approximately six months.
Official title: Patient-Reported Stent Symptom Outcomes and Migration Rates Following Modified Single-J Ureteric Stent Insertion After Ureteroscopy: A Prospective Feasibility Study
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
28
Start Date
2025-10-27
Completion Date
2026-03-01
Last Updated
2026-04-17
Healthy Volunteers
No
Conditions
Interventions
Single-J Stent
All participants receive a modified Single-J ureteric stent (SJS) at the time of their scheduled ureteroscopy (URS) for ureteric stone disease. Uniquely, the device is fashioned intraoperatively from a Cook Medical Bander Ureteral Diversion Stent - a stent not conventionally used in this clinical context - by shortening it to exactly 28 cm from the proximal renal curl, eliminating the distal bladder loop present in standard Double-J stents (DJS). A 7 cm non-absorbable prolene suture is anchored to the distal tip to facilitate cystoscopic retrieval. The SJS is inserted under fluoroscopic guidance immediately following laser lithotripsy and DJS removal, within the same operative episode. This study is, to our knowledge, the first Australian prospective feasibility study employing this specific device modification post-URS. Unlike prior SJS studies conducted in transplant or conduit diversion settings, this intervention targets pre-stented stone patients, enabling a controlled within-subj
Locations (1)
Austin Health
Melbourne, Victoria, Australia