Vibratory perineal stimulation for the treatment of female stress urinary incontinence: a systematic review

Abstract

Introduction and hypothesis: The pelvic floor muscles (PFM) play an important part in the urinary continence mechanism. Changes in their structure and functionality may lead to a predisposition to pelvic floor dysfunction such as urinary incontinence (UI), which is the involuntary loss of urine. Some techniques for conservative treatment of UI are already well documented. However, new approaches have been found that require scientific proof of their effectiveness, such as vibratory stimulation (VS). Thus, we performed a systematic review of studies that investigated the use of perineal VS (PVS) for the treatment of stress UI.

Materials and methods: This study followed the recommendations of the Cochrane Collaboration for systematic reviews. Studies that used PVS for the treatment of female UI were eligible.

Results: A total of 56 studies were found, of which ten were duplicates and were excluded. Analysis of the titles and abstracts led to the exclusion of 30 studies, leaving 16 for detailed analysis. Of these, only three were included as they fulfilled all the eligibility criteria previously established for the present study. In spite of the heterogeneity of the protocols, all the studies had the goal of assessing the effects of vibration on the PFM, and the stimulation was found to be effective in reducing urinary leakage, improving muscle strength and consequently the patients' quality of life.

Conclusions: Because of the heterogeneity and the small number of studies, it is not possible to draw a conclusion as to the effectiveness of PVS for the treatment of stress UI, and further studies are needed to provide scientific support for its use.

Keywords: Pelvic floor; Urinary incontinence; Vibration.