Transcutaneous Medial Plantar Nerve Stimulation in Women With Idiopathic Overactive Bladder

Inclusion Criteria: * Women over the age of 18 with clinical diagnosis of idiopathic OAB * Not tolerated or unresponsive to antimuscarinics and discontinued at least 4 weeks * Able to understand the procedures, advantages and possible side effects * Willing and able to complete the voiding diary and QoL questionnaire * The strength of pelvic floor muscles 3/5 and more Exclusion Criteria: * Women with stress urinary incontinence * History of conservative therapy (T-MPNS and Transcutaneous Tibial Nerve Stimulation/PTNS) within 6 months * Pregnancy or intention to become pregnant during the study * Current vulvovaginitis or urinary tract infections or malignancy * Anatomic or posttraumatic malformations/skin disorders of medial plantar nerve region on inner foot that cannot allow to apply the electrodes * More than stage 2 according to the pelvic organ prolapse quantification (POP-Q) * Cardiac pacemaker, implanted defibrillator * Previous urogynecological surgery within 3 months * Neurogenic bladder, signs of neurologic abnormalities at objective examination; history of the peripheral or central neurologic pathology * Ultrasonographic evidence of post-void residual volume more than 100 ml