Evaluation of duloxetine and innovative pelvic floor muscle training in women with stress urinary incontinence (DULOXING): Study protocol clinical trial (SPIRIT Compliant)

INTRODUCTION: There is a lack of published studies about the combination of duloxetine and pelvic floor muscle training (PFMT) in women with stress urinary incontinence (SUI). The aim of our work will be to evaluate the effect of this intervention by assessing whether there is a change in the incontinence episode frequency (IEF), Incontinence Quality of Life (I-QoL), Patient Global Impression of Improvement score (PGI-I) and mean time between voids (MTBV). Combined therapy with duloxetine and PFMT will be compared to duloxetine treatment alone with respect to its efficacy and side effects. METHODS: This study will be a randomized intervention, parallel, multicenter study in collaboration with 45 urological outpatient clinics at the national level. Patients will be assigned in a 1:1 ratio to the experimental and control groups using simple randomization according to odd and even numbers assigned sequentially to the patients at each clinic. The experimental intervention will be 12 weeks. The experimental group will receive oral treatment with duloxetine at a daily dose of 2 × 40 mg and will be required to perform innovative PFMT. The control group will receive the same oral duloxetine treatment (2 × 40 mg a day) but will not perform PMFT. Data will be collected from both groups before intervention and after the 12-week intervention is completed. DISCUSSION: The study protocol presents the starting points, design and randomization of an interventional multicenter study to monitor the effect of the combination of duloxetine with innovative PFMT compared to duloxetine treatment alone in women with SUI. This study may provide evidence of the efficacy of this combined treatment for SUI and highlight benefits associated with active approaches to treatment through exercise. REGISTRATION: This study was retrospectively registered in the ClinicalTrials.go NCT04140253. Protocol version 1.0. date 11.1.2019.