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This randomized, double-blind, placebo-controlled trial was designed to determine the clinical efficacy of onabotulinumtoxinA urethral sphincter injections in patients with dysfunctional voiding or detrusor underactivity. Patients with medically refractory dysfunctional voiding (n\u2009=\u200931) or detrusor underactivity (n\u2009=\u200931) were randomly allocated in a 2:1 ratio to receive either onabotulinumtoxinA (100\u2009U) (n\u2009=\u200938) or placebo (normal saline) (n\u2009=\u200924). There were no significant differences in subjective or objective parameters between patients who received onabotulinumtoxinA and those who received saline injection therapy, and the overall success rate was 43.5% (reduction in Patient perception of Bladder Condition by \u22652: onabotulinumtoxinA 36.8% vs placebo 54.2%, p\u2009=\u20090.114). The results were similar between the dysfunctional voiding and detrusor underactivity subgroups; however, a significant reduction in detrusor voiding pressure was only observed in dysfunctional voiding patients who received onabotulinumtoxinA. Repeat urethral sphincter onabotulinumtoxinA injections offered greater therapeutic effects in both dysfunctional voiding and detrusor underactivity patients. For patients with non-neurogenic voiding dysfunction, the success rate of onabotulinumtoxinA urethral sphincter injection was not superior to placebo.<\/jats:p>","DOI":"10.1038\/srep38905","type":"journal-article","created":{"date-parts":[[2016,12,13]],"date-time":"2016-12-13T10:32:49Z","timestamp":1481625169000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["OnabotulinumtoxinA Urethral Sphincter Injection as Treatment for Non-neurogenic Voiding Dysfunction \u2013 A Randomized, Double-Blind, Placebo-Controlled Study"],"prefix":"10.1038","volume":"6","author":[{"given":"Yuan-Hong","family":"Jiang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chung-Cheng","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hann-Chorng","family":"Kuo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2016,12,13]]},"reference":[{"key":"BFsrep38905_CR1","doi-asserted-by":"publisher","first-page":"313","DOI":"10.1002\/nau.22213","volume":"31","author":"D Robinson","year":"2012","unstructured":"Robinson, D., Staskin, D., Laterza, R. 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