A single site, double-blinded, randomized controlled trial for postmenopausal women with urinary frequency, urgency, nocturia with or without urgency urinary incontinence symptoms. Patient's will be randomized between 0.01% vaginal estradiol cream with placebo oral pill or daily 50 milligrams oral Mirabegron with a placebo vaginal cream for 12 weeks.
Raw score of 14 or more on OAB-q SF (adjusted score of 20)
Postmenopausal defined by not having a period for 12 months or bilateral oophorectomy a least 12 months status post procedure, or women with prior hysterectomy and preserved ovaries over age 55 years old or having a documented follicle stimulating hormone level greater than 40mIU/mL.
Ability to speak and read English
Contraindications to Vaginal Estrogen or Mirabegron
Post void residual >200mL or >1/3 patient's total bladder volume
Currently on or previously taking anticholinergic or beta- 3 agonists within the past 1 month
Symptomatic pelvic organ prolapse greater than Stage 2, contraindication to vaginal estrogen therapy
Parallel
Vaginal estrogen
Drug0.01% estradiol cream 1/2 gram applied vaginally once nightly for two weeks then three times per week with once daily placebo oral pill
Mirabegron 50 MG [Myrbetriq]
Drug50mg oral Mirabegron once daily
OAB-q short form (SF) symptom bother scores
Primary Aim: Compare changes in the six-item OAB-q short form (SF) symptom bother scores from baseline to 12 weeks post treatment in postmenopausal women who receive either vaginal estradiol or Mirabegron. We will also compare 12-weeks post treatment OAB-q SF symptom bother scores after single therapy trials with patients who desire combined therapy for another 12 weeks. The OAB-q SF symptom bother questionnaire is based on six individual questions a 6-point scale ranging from 1 or "not at all" to 6 or "a very great deal." Per the guidance of the scoring manual, the raw scores are converted into scores ranging from 0 to 100 (0 being the minimum score and 100 being the maximum score.) The higher the score signifies that the patient has worse bothersome overactive bladder symptoms. The conversion to a 100 point scale is based on the equation as follows: ((Raw score - 6) / 36) x 100.
health-related quality of life (HRQL) of the OAB-q SF scores
Compare health-related quality of life (HRQL) of the OAB-q SF from baseline to 12 weeks post treatment. We will also compare 12-weeks post treatment HRQL scores after single therapy trials with patients who desire combined therapy for another 12 weeks. The health-related quality of life (HRQL) portion of the OAB-q SF is based on 13 individual questions a 6-point scale ranging from 1 or "none of the time" to 6 or "all of the time" with the lowest score being 13 to the highest score being 78. The higher the score signifies that the patient has worse overactive bladder symptoms that affect their quality of life.
Patient Global Impression of Severity (PGI-S) scores
Compare Patient Global Impression Severity (PGI-S) scores at baseline versus 12 weeks post treatment. We will also compare 12-weeks post treatment Patient Global Impression of Severity (PGI-S) scores after single therapy trials with patients who desire combined therapy for another 12 weeks. The Patient Global Impression Severity (PGI-S) is a single question which describes the severity of their urinary tract condition. It is a single question on a scale ranging from 1 "not present" to 7 "extremely severe." The higher the score signifies that the patient has worse severity of their symptoms.
Patient Global Impression of Improvement (PGI-I) scores
Evaluate Patient Global Impression of Improvement (PGI-I) scores at 12 weeks post treatment. We will also compare 12-weeks post treatment Patient Global Symptom Improvement (PGI-I) scores after single therapy trials with patients who desire combined therapy for another 12 weeks. The Patient Global Impression of Improvement (PGI-I) is a single question which describes how their urinary tract condition is compared to how it was before treatment. It is a single question on a scale ranging from 1 "very much improved" to 7 "very much worse." The higher the score signifies that the patient has worse symptoms compared to prior treatment, the lower the score signifies that the patient has improved symptoms compared how it was before treatment. A score of 4 signifies not change in their described symptoms compared with how it was before treatment.
Number of voids
Compare number of times the patient voids via 24-hour bladder diary at baseline and 12 weeks post treatment. We will also compare 12-weeks post treatment number of voids after single therapy trials with patients who desire combined therapy for another 12 weeks. This is an objective measurement of how many times the patient voids over a 24 hour time frame post treatment. Though unlikely the lowest quantity would be 0 throughout the day. The more the patient documents voiding throughout the day the signifies worse the patient's described overactive bladder symptoms.
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