Comparing Two Ureteral Stent Designs in Children and Teens With Kidney Stones to Assess Symptoms and Discomfort

What this Trial Is About

Researchers are comparing two types of ureteral stents used in children and adolescents aged 8 to 18 years undergoing staged treatment for kidney stones. These stents, placed between the kidney and bladder, help urine drain after procedures but may cause discomforts like bladder spasms, pain, and urinary urgency. The study aims to assess if differences in stent design affect patient comfort and complications such as urinary tract infections. Participants will receive both the Polaris Ultra ureteral stent and the Cook double-J ureteral stent during two planned procedures in a randomized order. Each stent will be placed cystoscopically and remain in place for about 4 to 6 weeks. The study uses a crossover design where participants experience both stents, with blinding so neither participants nor caregivers know which stent is used during each treatment period. During each stent placement, participants will complete questionnaires and symptom assessments on postoperative days 1, 3, and 7 to report bladder spasms, pain intensity, urinary symptoms, and quality of life. Researchers will monitor complications including symptomatic urinary tract infections during the stent indwelling periods. The study is conducted under routine clinical care conditions and will last approximately 8 to 12 weeks covering both treatment periods.

Comparison of Ureteral Stent Designs in Children With Kidney Stones