UNGF Assessment in Patients With Detrusor Overactivity Undergoing Sacral Neuromodulation

Inclusion Criteria: * for controls: age greater than or equal to 18; female gender, ability to provide informed consent and complete study requirements; subject has to be without urinary symptoms * for cases: age greater than or equal to 18; female gender; ability to provide informed consent and complete study requirements; the subject should have symptoms of detrusor overactivity, including urinary frequency, urgency, or urge incontinence, for greater than or equal to 3 months; urodynamic diagnosis of detrusor overactivity; failed treatment with behavioral modification and anticholinergic medication Exclusion Criteria: * active urinary tract infection; currently undergoing hemodialysis or has severe renal impairment; bladder tumors; uncontrolled diabetes mellitus; post void residual greater than 100ml; history of use of anticholinergic treatment within past 21 days; history of urinary tract operation within 6 months prior to screening; heart failure; uncontrolled hypertension; severe neurological disease; history of botox usage within 1 year