Treatment outcomes of overactive bladder with combined therapies of botulinum toxin injections and oral agents.

OBJECTIVE: Treatment options for refractory overactive bladder (OAB) following behavioral modifications and oral OAB medications remain limited. Up to 33% of women fail botulinum toxin injections (Amundsen et al. Eur Urol. 74(1):66-73, 7). This study evaluates the effectiveness of combining oral OAB agents with botulinum toxin in subjects who failed botulinum toxin therapy alone. METHODS: This is a retrospective observational study. Eligible women were those who received botulinum toxin injections for OAB between 2013 and 2018 at one academic institution. Women were given the option of oral medications as add-back therapy following failed treatment with botulinum toxin alone. Treatment response was a subjective outcome, with subjects reporting being satisfied or unsatisfied. The primary outcome was the proportion of subjects who achieved satisfactory treatment response with the combination of oral OAB medications and botulinum toxin injections. A subanalysis was performed to further investigate any risk factors associated with poor response to combination treatment. Variables were analyzed using chi-squared or Fisher's exact test and Student's t-test or Mann-Whitney U when appropriate. RESULTS: A total of 107 charts were reviewed. Forty-five (48%) women failed botulinum toxin alone as a treatment; 26 (29%) elected to try one or more oral OAB medications. Of the 26 women who received the combination treatment, 17 (65%) reported satisfaction and 9 (35%) remained unsatisfied. Risk factors associated with treatment failure were not identified. CONCLUSION: This is an initial report on adding back oral OAB meds to patients who have failed botulinum toxin injections suggesting there may be a role for add-back oral OAB medications.

Effects of hormonal contraceptive phase and progestin generation on stress-induced cortisol and progesterone release.

The stress response differs between women using hormonal contraception and naturally cycling women. Yet, despite ample evidence showing that the stress response differs across the menstrual cycle in naturally cycling women, limited work has investigated whether the stress response differs across the hormonal contraceptive cycle, during which synthetic hormones are taken most of the month but not all of it. To induce a stress response, women using hormonal contraception completed the cold pressor test during either the active phase, when hormones are present, or during the inactive phase, when hormones are not present. Saliva was collected and assayed for free cortisol and progesterone levels prior to stress onset, immediately after stress termination, and 15-min post stress onset. Free cortisol and progesterone increased to a similar degree across both hormonal contraceptive phases in response to the cold pressor test. Post-hoc investigation indicates that the progestin "generation" (classification of synthetic progestins based on the compounds they are derived from) can differentially affect the free steroid response to cold pressor test stress, with the largest effects observed in women using formulations containing second-generation progestins. These findings indicate that progestin generation, particularly second-generation progestins, may have a more impactful influence on the stress response than hormonal contraceptive cycle phase. Potential mechanisms driving this effect and need for additional research are discussed.