To investigates the effects of combined pharmacotherapy with solifenacin and mirabegron versus solifenacin with vaginal estrogen cream in women with detrusor overactivity.

Women with detrusor overactivity who were refractory to anti-muscarinics were enrolled for prospective study. Patients were divided into two groups: one receive combined pharmacotherapy with solifenacin and mirabegron, and the other received solifenacin and vaginal estrogen cream. Incontinence-related symptoms distress and impact on quality of life were evaluated by short form of Urinary Distress Inventory, (UDI-6), Incontinence Impact Questionnaire (IIQ-7) and Overactive Bladder Symptom Score (OABSS). Objective outcomes include changes from baseline in episodes of daily micturition, urgency, urinary incontinence and nocturia.

Inclusion Criteria:

• Patients with detrusor overactivity which defined as a urodynamic observation characterized by involuntary detrusor contractions during the filling phase. Those who were refractory to monotherapy with anti-muscarinics were enrolled for prospective study.

Exclusion Criteria:

• Postvoid urine retention before treatment
• Women who had medical illness and contraindication for using solifenacin and mirabegron, such as narrow-angle glaucoma and hypertension
• Concerns for using estrogen include: Women with history of cerebrovascular disease; thromboembolic disorders; gallbladder disease; known or suspected breast carcinoma; estrogen-dependent neoplasm or undiagnosed abnormal genital bleeding.
• Women who were on hormone replacement therapy within 3 months were also excluded from the study

The study focus on female detrusor overactivity.