A Prospective Randomized Trial Comparing the Effects of Anti-reflux Versus Standard Ureteral Stents on Male Sexual Function

February 10, 2026 updated by: Rong Wang

Objective: To compare the effectiveness of anti-reflux ureteral stents on improving erectile function and quality of life of patients with ureteral stents.

Methods and Populations: A total of 100 male patients who required ureteral stent placement after ureteroscopic lithotripsy were randomly assigned to two groups: those in Group T (n=50) received a standard double-J-stent, while those in Group A (n=50) underwent implantation with anti-reflux ureteral stent. Follow up for 8 weeks after surgery, including reproductive hormones and inflammation marks, Beck's depression scale, IIEF and statistics on the frequency of symptoms such as hematuria.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
96

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Jiangsu
      • Changzhou, Jiangsu, China, 213000
        • Jintan Affiliated Hospital of Jiangsu University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • male sexually active patients with unilateral ureteral calculi who underwent ureteroscopy with laser lithotripsy and needed post-procedure stent

Exclusion Criteria:

  • Patients were excluded if they included the following criteria: (1) age under 18 or over 50 years, (2) history of previous ureteral stenting, (3) bilateral stents, (4) moderate or severe ureteral stricture need long-term stenting (on regular exchange), (5) bladder pathology and overactive bladder, (6) symptomatic benign prostatic hyperplasia, (7) moderate or severe urinary tract infection, (8) moderate or severe cardiovascular disease, hepatic dysfunction and diabetes, (9) previous use of selective alpha-1-blocker and/or antimuscarinic agent, (10) pre-op IIEF-5 ≤ 21.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Group A
anti-reflux ureteral stent(INNOVEX, Shanghai, China)
Procedure: Routine laser lithotripsy

Routine laser lithotripsy was done for the ureteral calculi, and a 6 Fr polyurethane DJ stent (Inlay Optima®, Bard Medical, Covington, GA) or INNOVEX, according to the groups, was inserted under fluoroscopic and cystoscopic guidance. Appropriate length was adjusted according to patient's height. Routine X-ray of the kidneys, ureter and bladder (KUB) was taken for all patients before home discharge to confirm the proper stent positioning. All patients are advised to avoid alcohol, until 4 weeks after surgery when the ureteral stent is removed in our institution.

General information such as preoperative age, body mass index, diameter of ureteral calculi, and degree of hydronephrosis, operation time were obtained. Follow up for 8 weeks after surgery, including reproductive hormones and inflammation marks, Beck's depression scale, IIEF and statistics on the frequency of symptoms such as hematuria.
Active Comparator: Group-T
standard double-J-stent
Procedure: Routine laser lithotripsy

Routine laser lithotripsy was done for the ureteral calculi, and a 6 Fr polyurethane DJ stent (Inlay Optima®, Bard Medical, Covington, GA) or INNOVEX, according to the groups, was inserted under fluoroscopic and cystoscopic guidance. Appropriate length was adjusted according to patient's height. Routine X-ray of the kidneys, ureter and bladder (KUB) was taken for all patients before home discharge to confirm the proper stent positioning. All patients are advised to avoid alcohol, until 4 weeks after surgery when the ureteral stent is removed in our institution.

General information such as preoperative age, body mass index, diameter of ureteral calculi, and degree of hydronephrosis, operation time were obtained. Follow up for 8 weeks after surgery, including reproductive hormones and inflammation marks, Beck's depression scale, IIEF and statistics on the frequency of symptoms such as hematuria.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
change in IIEF score
Time Frame: Patients were followed up postoperatively according to a bi-weekly schedule, with clinical assessments at 2, 4, 6, and 8 weeks
Patients were followed up postoperatively according to a bi-weekly schedule, with clinical assessments at 2, 4, 6, and 8 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Rong Wang

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • 1.Sorokin I, Mamoulakis C, Miyazawa K, Rodgers A, Talati J, Lotan Y. Epidemiology of stone disease across the world. World J Urol. 2017;35(9):1301-1320. doi:10.1007/s00345-017-2008-6. 2.Arora A, Sane MS, Jadhao V, Maheshwari PN. Sexual dysfunction in Indian men undergoing Double J ureteral stenting following ureteroscopy-A prospective analysis. Andrologia. 2020;52(10):e13790. doi:10.1111/and.13790. 3.Mawhorter M, Streeper NM. Advances in ureteral stent technology. Curr Opin Urol. 2022;32(4):415-419. doi:10.1097/MOU.0000000000001003. 4.Chew BH, Lange D. Advances in ureteral stent development. Curr Opin Urol. 2016;26(3):277-282. doi:10.1097/MOU.0000000000000275. 5.CONSORT 2025 statement: updated guideline for reporting randomised trials. BMJ. 2025;389:e081123. Published 2025 Apr 14. doi:10.1136/bmj-2024-081123. 6.Arena S, Iacona R, Impellizzeri P, et al. Physiopathology of vesico-ureteral reflux. Ital J Pediatr. 2016;42(1):103. Published 2016 Nov 29. doi:10.1186/s13052-016-0316-x. 7.Zhang L, Wu Y, Chen Y, et al. Triangular prismatic JJ stent does not cause more discomfort than tubular ones: a randomised controlled trial comparison. World J Urol. 2024;42(1):67. Published 2024 Feb 3. doi:10.1007/s00345-023-04758-5. 8.Wen KC, Li ZA, Liu JH, Zhang C, Zhang F, Li FQ. Recent developments in ureteral stent: Substrate material, coating polymer and technology, therapeutic function. Colloids Surf B Biointerfaces. 2024;238:113916. doi:10.1016/j.colsurfb.2024.113916. 9.Hatzimouratidis K, Amar E, Eardley I, et al. Guidelines on male sexual dysfunction: erectile dysfunction and premature ejaculation. Eur Urol. 2010;57(5):804-814. doi:10.1016/j.eururo.2010.02.020. 10.De Nunzio C, Roehrborn CG, Andersson KE, McVary KT. Erectile Dysfunction and Lower Urinary Tract Symptoms. Eur Urol Focus. 2017;3(4-5):352-363. doi:10.1016/j.euf.2017.11.004.2024;383(6683):eade8064. doi:10.1126/sci

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 30, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 30, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 10, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 10, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 17, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 17, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 10, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Zhangjiagang First Hospital

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The data that support the findings of this study are available from the corresponding author upon reasonable request.

IPD Sharing Time Frame

Beginning 3 months and ending 3 years after the publication of results

IPD Sharing Access Criteria

The data that support the findings of this study are available from the corresponding author upon reasonable request.

IPD Sharing Supporting Information Type

  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Male Sexual Function

Clinical Trials on Routine laser lithotripsy

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings