Pulsed Electromagnetic Stimulation for Treatment of Overactive Bladder

Twenty to Forty patients with documented overactive bladder will receive 30 minutes of treatment one day a week for 12 weeks. Treatment will consist of stimulating the posterior tibial nerve in the area of the ankle with a pulsed electromagnetic field. Study treatments will be administered by a commercially available MagPro R30, with a cooled figure eight coil, and a surface electrode placed over the afferent pathway of the sacral nerve. The specific aim is improved urinary frequency and urgency after 12 weeks of treatment. Secondary goals. * To estimate the extent to which the device will decrease the number of episodes of involuntary urine loss due to frequency/urgency in comparison to historical controls. * To evaluate the potential of the device for improving patient quality of life as measured by a clinically validated scale, such as the Incontinence Quality of Life Instrument (I-QOL) or equivalent * To periodically employ a micturition diary to record variables such as day/night urgency/frequency episodes, number of voids per day, severity of leaks, number of absorbent products used per day, etc.