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Efficacy of transcutaneous electrical nerve stimulation in the management of neurogenic overactive bladder: a randomized controlled trial [with consumer summary]
Liu Y, Xu G, Geng J
American Journal of Physical Medicine & Rehabilitation 2022 Jan;101(1):2-10
clinical trial
7/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: The aim of the study was to investigate the therapeutic effect of transcutaneous electrical nerve stimulation on neurogenic overactive bladder that is refractory to pharmacotherapy. METHODS: This randomized trial recruited 83 participants with neurogenic overactive bladder that were nonresponsive to 3 months first-line anticholinergic drug treatment. Participants were randomized into treatment and control groups. Transcutaneous electrical nerve stimulation current consisting of biphasic square wave with pulse durations of 150 microseconds and pulse frequency set at 20 Hz were applied to for 30 minutes once a day for 90 days. Stimulation was provided over the lateral aspect of the sacrum bilaterally of the electrodes. Patients in the transcutaneous electrical nerve stimulation group stopped taking the anticholinergic drugs. The control group continued to receive anticholinergic drugs for 90 days. The participants' Overactive Bladder Symptom Score, the Medical Outcomes Study 36-Item Short-Form Health Survey scores, urodynamic values, and voiding diary data were assessed before and after the therapy. RESULTS: The transcutaneous electrical nerve stimulation treatment group had significantly decreased Overactive Bladder Symptom scores compared with the control group (p < 0.001); in addition, half of the Medical Outcomes Study 36-Item Short-Form Health Survey scores were significantly improved in the transcutaneous electrical nerve stimulation group (p < 0.05). The patients treated with transcutaneous electrical nerve stimulation improved significantly voiding diary parameters at p < 0.05. Similarly, urodynamic values at p < 0.05 favored the experimental group over the control group. CONCLUSIONS: Applying daily transcutaneous electrical nerve stimulation over the sacral region for 90 days to patient with neurogenic overactive bladder improved overactive bladder symptoms of patients whose response to anticholinergic drugs is far inferior.

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