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Stress Urinary IncontinenceNCT05255289

Efficacy/Safety of Midurethral Sling

A study testing Urodynamic investigations before and after a trans-obturator tape protocol., Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O) and Urodynamic investigations before and after a mini Arc protocol. in people with Stress Urinary Incontinence, run by Mackay Medical College at 1 site in Taiwan.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The trans-obturator tape (TOT), which exhibits a satisfactory cure rate and a relatively diminished invasiveness, has been increasingly accepted as a surgical treatment of stress urinary incontinence (SUI) patients. Read more about this study

Who is it for?
Ages 30 to 100 years, women only
Conditions the study is for
Stress Urinary Incontinence
What is being tested?
Urodynamic investigations before and after a trans-obturator tape protocol., Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O) and Urodynamic investigations before and after a mini Arc protocol.
Could I receive a placebo?
No, everyone receives an active treatment
How many people
200 participants
Where
1 siteTaiwan
Study dates
8 Mar 2021to Mar 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 30 to 100 years
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Clinical diagnosis of stress urinary incontience
  • Have urodynamic investigations before and after operation.

Who cannot join

  • Exclusion criteria will be a history of (1) cardiovascular, (2) neurological, or (3) other medical (such as diabetes or inflammation) problems as well as (4) patients who received a concomitant surgical procedure.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Hui-Hsuan Lau, M.D. contact

+886-975-835928

huihsuan1220@gmail.com

Taiwan1 site, 1 recruiting
  • Department of Obstetrics and Gynecology

    New Taipei City

    Hui-Hsuan Lau, PhD, +886 975-835928, huihsuan1220@gmail.com

    Recruiting

Other trials in Taiwan

About this study

Official title: Evaluation of Efficacy and Safety of Midurethral Slings in Women With Stress Incontinence

The trans-obturator tape (TOT), which exhibits a satisfactory cure rate and a relatively diminished invasiveness, has been increasingly accepted as a surgical treatment of stress urinary incontinence (SUI) patients. Nevertheless, in contrast to the well-recognized therapeutic benefit of the enhanced resistance to the bladder continence during urine storage, if the voiding function of the bladder adapts to the TOT-enhanced outlet resistance has not been adequately investigated. This study retrospectively assayed the voiding efficacy of each voiding cycle, to clarify if the thermodynamic efficacy of the bladder was modified in response to the TOT surgery.

Read the detailed description

The urodynamic study included free uroflowmetry, postvoid residual, filling and voiding cystometry, and a urethral pressure profile. The filling cystometry and urethral pressure profile were performed with 37 degrees C normal saline similar to body temperature at an infusion rate of 80 ml/min. All patients received a pre- and a post-operative urodynamic evaluation, in which pre-operative evaluation was conducted 1-4 weeks before TOT procedure, and post-operative evaluation was done at 4-6 weeks follow-up.

Complete multichannel urodynamic studies including free uroflowmetry, filling and voiding cystometry, and urethral pressure profile was performed in each patient. The urodynamic parameters measured were the maximum flow rate (Qmax), voided volume, post-void residual volume (PVR), and detrusor pressure at Qmax (Pdet. Qmax). The filling cystometry and urethral pressure profile were performed with 37 degrees C normal saline at an infusion rate of 80 ml/min. All data were recorded and analyzed using a Medical Measurement Systems (MMS UD-200, Enschede, The Netherlands). All data in this study will be expressed as mean ± SEM. After checking the normality and variance of data, two-way ANOVAs were used to assess the difference in values among testing groups and time points; and post hoc Student-Newman-Keuls tests were used to compare the means of groups when there was a significant difference between groups. Significance was set at p<0.05.

Being tested
Urodynamic investigations before and after a trans-obturator tape protocol., Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O), Urodynamic investigations before and after a mini Arc protocol., Urodynamic investigations before and after an i-STOP mini adjustable sling protocol., Urodynamic investigations before and after an Solyx sling protocol.
Medical subject headings
Urinary Incontinence, Stress

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Urodynamic investigations before and after a trans-obturator tape protocol.Procedure or surgery

    Urodynamic investigations (The urodynamic study included free uroflowmetry, postvoid residual, filling and voiding cystometry, and a urethral pressure profile. The filling cystometry and urethral pressure profile were performed with 37 degrees C normal saline similar to body temperature at an infusion rate of 80 ml/min.)

  • Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)Procedure or surgery

    Urodynamic investigations (stated above.)

  • Urodynamic investigations before and after a mini Arc protocol.Procedure or surgery

    Urodynamic investigations (stated above)

  • Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.Procedure or surgery

    Urodynamic investigations (stated above)

  • Urodynamic investigations before and after an Solyx sling protocol.Procedure or surgery

    Urodynamic investigations (stated above.)

Study groups in NCT05255289
Study groupRoleWhat they receive
Before TOTExperimentalData obtained before the operation
Receives: Procedure: Urodynamic investigations before and after a trans-obturator tape protocol.
After TOTExperimentalData obtained after the operation
Receives: Procedure: Urodynamic investigations before and after a trans-obturator tape protocol.
Before TVT-OExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
After TVT-OExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Aged patient (>50 y/o) before TVT-OExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Aged patient (>50 y/o) after TVT-OExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Young patients (<50 y/o) before TVT-OExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Young patients (<50 y/o) after TVT-OExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Menopausal patient before TVT-OExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Menopausal patient after TVT-OExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Pre-menopausal patient before TVT-OExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Pre-menopausal patients after TVT-OExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O)
Before i-STOPExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
After i-STOPExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Aged patient before i-STOPExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Aged patient after i-STOPExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Young patient before i-STOPExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Young patient after i-STOPExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Menopausal patient before i-STOPExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Menopausal patient after i-STOPExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Pre-menopausal patient before i-STOPExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Pre-menopausal patient after i-STOPExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after an i-STOP mini adjustable sling protocol.
Before mini ArcExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
After mini ArcExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Age patient before mini ArcExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Age patient after mini ArcExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Young before mini ArcExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Young patient after mini ArcExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Menopausal patient before mini ArcExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Menopausal patient after mini ArcExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Pre-menopausal before mini ArcExperimentalData obtained before the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Pre-menopausal patient after mini ArcExperimentalData obtained after the operation.
Receives: Procedure: Urodynamic investigations before and after a mini Arc protocol.
Before Solyx slingExperimentalData obtained before the operation
Receives: Procedure: Urodynamic investigations before and after an Solyx sling protocol.
After Solyx slingExperimentalData obtained before the operation
Receives: Procedure: Urodynamic investigations before and after an Solyx sling protocol.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pressure-volume study

    urine leakage.

    Measured: within a voiding cycle (a cycle is about 30 to 60 minutes)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Feb 2022
  2. Study start8 Mar 2021
  3. Primary completionMar 2026 (estimated)
  4. Study completionMar 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
200 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05255289
Sponsor's protocol ID
20MMHIS410e
Status last verified
Aug 2025
First submitted
12 Feb 2022
Last updated
5 Sep 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: For we uncertain if this might violate personal information laws in our country.

Publications

  • Abrams P, Andersson KE, Apostolidis A, Birder L, Bliss D, Brubaker L, Cardozo L, Castro-Diaz D, O'Connell PR, Cottenden A, Cotterill N, de Ridder D, Dmochowski R, Dumoulin C, Fader M, Fry C, Goldman H, Hanno P, Homma Y, Khullar V, Maher C, Milsom I, Newman D, Nijman RJM, Rademakers K, Robinson D, Rosier P, Rovner E, Salvatore S, Takeda M, Wagg A, Wagner T, Wein A; members of the committees. 6th International Consultation on Incontinence. Recommendations of the International Scientific Committee: EVALUATION AND TREATMENT OF URINARY INCONTINENCE, PELVIC ORGAN PROLAPSE AND FAECAL INCONTINENCE. Neurourol Urodyn. 2018 Sep;37(7):2271-2272. doi: 10.1002/nau.23551. Epub 2018 Aug 14. No abstract available.

    PubMed 30106223
  • Abrams P, Cardozo L, Fall M, Griffiths D, Rosier P, Ulmsten U, van Kerrebroeck P, Victor A, Wein A; Standardisation Sub-committee of the International Continence Society. The standardisation of terminology of lower urinary tract function: report from the Standardisation Sub-committee of the International Continence Society. Neurourol Urodyn. 2002;21(2):167-78. doi: 10.1002/nau.10052. No abstract available.

    PubMed 11857671
  • Abrams P, Cardozo L, Fall M, Griffiths D, Rosier P, Ulmsten U, Van Kerrebroeck P, Victor A, Wein A; Standardisation Sub-Committee of the International Continence Society. The standardisation of terminology in lower urinary tract function: report from the standardisation sub-committee of the International Continence Society. Urology. 2003 Jan;61(1):37-49. doi: 10.1016/s0090-4295(02)02243-4. No abstract available.

    PubMed 12559262
  • Atis G, Arisan S, Ozagari A, Caskurlu T, Dalkilinc A, Ergenekon E. Tissue reaction of the rat urinary bladder to synthetic mesh materials. ScientificWorldJournal. 2009 Oct 2;9:1046-51. doi: 10.1100/tsw.2009.120.

    PubMed 19802500
  • de Leval J. Novel surgical technique for the treatment of female stress urinary incontinence: transobturator vaginal tape inside-out. Eur Urol. 2003 Dec;44(6):724-30. doi: 10.1016/j.eururo.2003.09.003.

    PubMed 14644127
  • Hsiao SM, Kuo HC. Predictors of further anti-incontinence interventions or transvaginal urethrolysis after a pubovaginal sling procedure in women with and without neurologic disorders. J Formos Med Assoc. 2021 Jul;120(7):1464-1477. doi: 10.1016/j.jfma.2020.12.029. Epub 2021 Jan 16.

    PubMed 33468403
  • Huang WC, Lau HH, Su TH. Did surgical failure and complications affect incontinence-related quality of life in women after transobturator sling procedure? Taiwan J Obstet Gynecol. 2018 Apr;57(2):295-299. doi: 10.1016/j.tjog.2018.02.020.

    PubMed 29673676
  • Medina CA, Costantini E, Petri E, Mourad S, Singla A, Rodriguez-Colorado S, Ortiz OC, Doumouchtsis SK. Evaluation and surgery for stress urinary incontinence: A FIGO working group report. Neurourol Urodyn. 2017 Feb;36(2):518-528. doi: 10.1002/nau.22960. Epub 2016 Mar 7.

    PubMed 26950893
  • Schimpf MO, Rahn DD, Wheeler TL, Patel M, White AB, Orejuela FJ, El-Nashar SA, Margulies RU, Gleason JL, Aschkenazi SO, Mamik MM, Ward RM, Balk EM, Sung VW; Society of Gynecologic Surgeons Systematic Review Group. Sling surgery for stress urinary incontinence in women: a systematic review and metaanalysis. Am J Obstet Gynecol. 2014 Jul;211(1):71.e1-71.e27. doi: 10.1016/j.ajog.2014.01.030. Epub 2014 Jan 30.

    PubMed 24487005
  • Ulmsten U, Henriksson L, Johnson P, Varhos G. An ambulatory surgical procedure under local anesthesia for treatment of female urinary incontinence. Int Urogynecol J Pelvic Floor Dysfunct. 1996;7(2):81-5; discussion 85-6. doi: 10.1007/BF01902378.

    PubMed 8798092
  • Waltregny D, Gaspar Y, Reul O, Hamida W, Bonnet P, de Leval J. TVT-O for the treatment of female stress urinary incontinence: results of a prospective study after a 3-year minimum follow-up. Eur Urol. 2008 Feb;53(2):401-8. doi: 10.1016/j.eururo.2007.08.021. Epub 2007 Aug 21.

    PubMed 17728052
  • Lau HH, Lai CY, Peng HY, Hsieh MC, Su TH, Lee JJ, Lin TB. Modification of bladder thermodynamics in stress urinary incontinence patients submitted to trans-obturator tape: A retrospective study based on urodynamic assessment. Front Bioeng Biotechnol. 2022 Aug 19;10:912602. doi: 10.3389/fbioe.2022.912602. eCollection 2022.

    PubMed 36061421

Questions about this trial

What is this clinical trial studying?

A study testing Urodynamic investigations before and after a trans-obturator tape protocol., Urodynamic investigations before and after a tension-free vaginal tape-obturator (TVT-O) and Urodynamic investigations before and after a mini Arc protocol. in people with Stress Urinary Incontinence, run by Mackay Medical College at 1 site in Taiwan.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 5 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Hui-Hsuan Lau, M.D. (+886-975-835928, huihsuan1220@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pressure-volume study (time frame: within a voiding cycle (a cycle is about 30 to 60 minutes)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05255289, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Sep 2025.

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