A Phase 4 interventional study of Bactrim (800/160 mg), Keflex (500 mg), Cipro (250 mg), or Macrobid (100mg) in Urinary Tract Infections, Stress Urinary Incontinence and Urinary Incontinence, sponsored by University of Miami. Recruiting at 2 sites in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-29.
Sponsored by University of Miami · Phase 4, Interventional, and Prevention
The purpose of this study is to evaluate whether taking prophylactic (preventative) antibiotics at the time of standard of care clinic-based urethral bulking reduces the risk of post-procedural urinary tract infection (UTI).
803 studies on the registry are indexed under Urinary Tract Infections; 133 are open to participants now.
This study's planned enrollment of 150 is above the median of 131 across 560 interventional studies indexed under Urinary Tract Infections.
Browse Urinary Tract Infections studies →University of Miami is the lead sponsor of 840 studies on the registry; 164 are open to participants now.
Of its 115 completed or terminated interventional studies of FDA-regulated products, 97 (84%) have results posted.
Counted across the registry records on this site, refreshed daily.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants in this group will receive a single oral dose of either Bactrim (800 mg sulfamethoxazole + 160 mg trimethoprim), Keflex (500 mg cephalexin), Cipro (250 mg ciprofloxacin), or if allergic to sulfonamides, a single oral dose of Macrobid (100 mg nitrofurantoin) at the time of standard of care clinic-based urethral bulking procedure.
Drug: Bactrim (800/160 mg), Keflex (500 mg), Cipro (250 mg), or Macrobid (100mg)
Participants in this group will not receive prophylactic antibiotics at the time of standard of care clinic based urethral bulking procedure.
Drug page: Sulfamethoxazole
Participants will receive a single oral dose of either Bactrim (800 mg sulfamethoxazole + 160 mg trimethoprim), Keflex (500 mg cephalexin), Cipro (250 mg ciprofloxacin), or if allergic to sulfonamides, a single oral dose of Macrobid (100 mg nitrofurantoin) at the time of the urethral bulking procedure.
Also known as: Sulfamethoxazole, Trimethoprim, Nitrofurantoin, Cephalexin, Ciprofloxacin
Incidence of post-procedural urinary tract infection (UTI) within six weeks following urethral bulking procedure
The occurrence of urinary tract infection (UTI) within 6 weeks post-procedure will be compared between patients who receive prophylactic oral antibiotics administered in clinic at the time of urethral bulking and those who do not receive antibiotic prophylaxis. UTI will be defined by clinical diagnosis documented in the medical record, with or without supporting urine culture results.
Time frame: 6 Weeks
Plan to share: No
No publications or documents are linked to this record.
Started Aug 2026 (actual). Primary completion is estimated for Jun 2028, 22 months after the start.
Of 44 non-industry phase 4 interventional studies under Urinary Tract Infections, half reached primary completion within 39 months of starting (the median), counting those still running; a quarter within 22 and three quarters within 50. This study's planned 22 months is below that.
Counting every sponsor, half of 50 studies reached it within 37 months; a quarter within 22 and three quarters within 46.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Sulfamethoxazole