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Daily Nitrofurantoin Versus Bladder Fulguration Plus Daily Nitrofurantoin for Women With Recurrent Urinary Tract Infections

A Multicentric Randomized Trial of Daily Nitrofurantoin Versus Bladder Fulguration Plus Daily Nitrofurantoin for the Long-term Management of Cystitis in Women With Recurrent Urinary Tract Infections

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06907199
Enrollment
104
Registered
2025-04-02
Start date
2026-04-06
Completion date
2029-01-30
Last updated
2026-07-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystitis Recurrent, Recurrent UTIs

Keywords

bladder fulguration, Nitrofurantoin, long-term managenent of cystitis, Recurrent UTI, chronic UTI

Brief summary

The goal of this clinical trial is to learn if the drug Nitrofurantoin (NF) taken as a daily antibiotic, works to treat cystitis compared to electrofulguration (EF) and Nitrofurantoin (NF) daily antibiotic.

Detailed description

This is a study for women age 18 -85 with a well-documented history of rUTI (recurrent urinary tract infection) for at least one year. This randomized multicentric clinical trial will determine the efficacy of conventional 6 months Nitrofurantoin (NF) daily antibiotic prophylaxis alone versus electrofulguration (EF) associated with a 6 months NF daily antibiotic prophylactic course for early stages of chronic cystitis (stages 1 and 2) as determined on office cystoscopy. This study will ask the participant (n=104) to return to the Urology clinic at UT Southwestern Medical Center (n=52) or The University of Kansas Medical Center (n=52) for a total of 8 compensated visits throughout 30 months after the start of this randomized trial to make sure that the treatment worked well for them.

Interventions

PROCEDUREElectrofulguration (EF)

Nitrofurantoin (NF) daily antibiotic prophylaxis for 6 months plus Electrofulguration.

DRUGNitrofurantoin (NF)

Nitrofurantoin (NF) daily antibiotic prophylaxis given daily for 6 months.

Sponsors

University of Texas Southwestern Medical Center
Lead SponsorOTHER
University of Texas
CollaboratorOTHER
National Institutes of Health (NIH)
CollaboratorNIH
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* Females 18 to 85 years old with at least a 1-year history of culture documented uncomplicated rUTI. * Diagnosis of rUTI, defined as ≥ 3 symptomatic UTIs in 12 months or ≥ 2 in 6 months. * Currently free from a UTI determined based on absence of symptoms as determined by the UTI symptom assessment questionnaire and negative urine culture (\<10\^3 colony forming units per ml of urine). * A negative upper and lower urinary tract evaluation, including pelvic examination for pelvic organ prolapse (less than or equal to stage 2), measurement of post-void residual (less than 50 ml), and imaging (which may include renal ultrasound and standing voiding cystourethrogram) to exclude kidney stone, hydronephrosis, reflux, or urethral diverticulum. * Office cystoscopy documenting stages 1 or 2 of chronic cystitis. * Likely to stay in the geographic region for the duration of the study. * ASA class II or less.

Exclusion criteria

* Patients on antibiotics at baseline (i.e., suppressive therapy or antibiotic therapy for non-urinary infections). * Patients on self-start therapy (i.e., taking antibiotics upon start of urinary symptoms concerning for UTI). * Patients on prophylactic antibiotics started in the last 3 months and unwilling to discontinue, or intention to start in the next 12 months. * Complicated UTIs, including neurogenic bladder condition (i.e., multiple sclerosis, Parkinson's disease, spinal cord injury), bladder augmentation, or urinary diversion. * Patients with urinary catheters (including indwelling Foley, intermittent catheterization, and suprapubic catheters). * Uncontrolled diabetes (HbA1c \>9). * Pregnancy * Allergy or resistance to Nitrofurantoin. * Chronic lung or liver condition precluding the use of Nitrofurantoin, including abnormal chest X ray or elevated liver function tests. * Chronic renal insufficiency (creatinine over 1.5 g/dl or GFR less than 40) precluding the use of Nitrofurantoin. * History of chronic diarrhea requiring regular therapy. * Patients with psychosis, dementia, swallowing disorders, or any other ability to take Nitrofurantoin reliably at home. * BMI over 40. * Use of Uromune or other vaccine approaches to reduce rUTI episodes * Participation in a research study involving an investigational product in the past 12 weeks. * Patients receiving phage therapy. * Current diagnosis of interstitial cystitis. * Patients with medical conditions requiring excessively large amounts of fluid intake.

Design outcomes

Primary

MeasureTime frameDescription
Treatment of cystitis with NF vs EF+NFBaseline to 30 months after enrollment to completion of studyRate of culture documented symptomatic UTIs following the completion of each 6-month study arm intervention. Specifically, from 6 to 18 months (first year) after the completion of the original intervention and, 18 to 30 months (second year).

Secondary

MeasureTime frameDescription
No recurring cystitisBaseline to 30 months after enrollment to completion of studyComparison of patient characteristics between the two enrolling institutions.
Rate comparison of culture-documented breakthroughBaseline to 30 months after enrollment to completion of studyRate of culture-documented breakthrough UTIs between the two treatment arms.
Rate of multi-drug resistant organismsBaseline to 30 months after enrollment to completion of studyRate of urine cultures showing multi-drug resistant organisms in each treatment arm.
Rate of non-urine cultureBaseline to 30 months after enrollment to completion of studyRate of non-urine culture documented symptomatic UTI episodes for 12 months and 24 months following end of treatment arms, as determined by the Urinary Tract Infection Symptom Assessment (UTISA) (a total score of 3 or higher, or any individual score of 2 or 3) between the two treatment arms.
Rate of behavior changesBaseline to 30 months after enrollment to completion of studyRate of behavior changes in both groups (fluid increases or use of non-antibiotic therapies, e.g., cranberry, D-mannose, urinary analgesics, hormonal therapy) in each treatment arm.
Rate of score differences in symptoms and quality of lifeBaseline to 30 months after enrollment to completion of studyRate of score differences in patient symptoms and quality of life assessments using validated questionnaires- the Urinary Tract Infection Symptom Assessment (UTISA), Urinary Distress Inventory, Short Form (UDI-6), and Quality of Life scale (QoL) by Visual Analogue Scale (VAS) between both treatment arms.
Rate of UTI episodesBaseline to 30 months after enrollment to completion of studyRate of UTI episodes (after first and second year of the completion of the intervention) compared to the rate of UTI episodes prior to the start of study

Countries

United States

Contacts

CONTACTMeghan Leak
utswuti@utsouthwestern.edu214-645-8787
CONTACTPhilippe Zimmern, M.D.
PRINCIPAL_INVESTIGATORPhilippe Zimmern, M.D.

University of Texas Southwestern Medical Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 24, 2026