Abstract
Third-line therapies for patients with overactive bladder (OAB) can improve symptoms for those who have failed conservative therapies. Options include percutaneous tibial nerve stimulation (PTNS), cystoscopic injection of onabotulinumtoxinA (BTX-A), and sacral neuromodulation (SNM). This paper aims to review the current literature on the treatment of patients with idiopathic OAB who have undergone BTX-A injections and have not responded or have undesirable side effects from the therapy. There are no randomized control trials examining the role of concurrent medical therapy and BTX-A; rather, there are observational studies in the neurogenic population. Furthermore, there are two observational studies on the role of SNM in BTX-A refractory idiopathic OAB patients demonstrating its safety and efficacy. There are many options available to the patient who fails BTX-A. Further research in this specific patient population is necessary to determine why patients have suboptimal responses and to delineate the next step in treatment.
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