Open‐label study evaluating outpatient urethral sphincter injections of onabotulinumtoxinA to treat women with urinary retention due to a primary disorder of sphincter relaxation (Fowler's syndrome)

Abstract

This pilot study shows an improvement in patient-reported lower urinary tract symptoms, and the objective parameters of Qmax , PVR and UPP, at 10 weeks after urethral sphincter injections of onabotulinumtoxinA. No serious side-effects were reported. This treatment could represent a safe outpatient treatment for young women in retention due to a primary disorder of urethral sphincter relaxation. However, a larger study is required to confirm the findings of this pilot study.