Conditions: Urinary Urge Incontinence
Keywords: Urinary Urge Incontinence Posterior Tibial Nerve Stimulation PTNS Neuromodulation Oxybutynin Anticholinergic Medication
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 55
Healthy volunteers: no

Brief summary:
This is a randomized double-blind placebo-controlled clinical trial of posterior tibial nerve stimulation (PTNS) plus extended release oxybutynin versus PTNS alone (placebo pills) in women undergoing treatment of urgency urinary incontinence (UUI).

The investigators hypothesize that combination therapy with PTNS and anticholinergic medication will result in a significant incremental improvement in UUI symptoms over that achieved with PTNS alone. In addition, the investigators hypothesize that the addition of anticholinergics to PTNS will result in a greater improvement in patients' perception of treatment response, symptom distress, and quality of life than PTNS alone.

Specific Aim 1: To compare the change, from baseline, in mean number of UUI episodes per day using a 3-day bladder diary between PTNS plus anticholinergic medication versus PTNS plus placebo in women undergoing treatment for UUI.

Specific Aim 2: To compare the change, from baseline, in a 24hr pad weight between PTNS plus anticholinergic medication versus PTNS plus placebo.

Specific Aim 3: To compare subjective treatment response, symptoms distress, and quality of life between PTNS plus anticholinergic medication versus PTNS plus placebo utilizing the Patient Global Impression of Improvement (PGI-I) and the Overactive Bladder Questionnaire Short Form (OABq-SF).

An interim analysis will be conducted by an independent entity after 50 participants have completed the study protocol. A Data Safety Monitoring Board is not utilized because the study utilizes FDA approved treatments for urgency urinary incontinence.

Detailed description:

Arms:
arm 1: Oxybutynin extended release (blinded tablet) 5mg by mouth daily for 6 weeks, Posterior Tibial Nerve Stimulation utilizing the Urgent PC neuromodulation system administered weekly in the office setting for a total of 6 weeks. arm 2: Placebo (blinded tablet) taken daily for 6 weeks. Posterior Tibial Nerve Stimulation utilizing the Urgent PC neuromodulation system administered weekly in the office setting for a total of 6 weeks.

Interventions: intervention 1: Oxybutynin extended release intervention 2: Posterior Tibial Nerve Stimulation intervention 3: Placebo
Intervention descriptions: intervention 1: 5mg tablet taken by mouth daily for 6 weeks intervention 2: In office therapy administered for 30 minutes once every week for a total of 6 weeks intervention 3: Tablet taken by mouth daily for 6 weeks

Protocol document: