• Jiapeng Huang, Ye Fan, Kehong Zhao, Chunlan Yang, Ziqi Zhao, Yin Chen, Jiaen Yang, Tingting Wang, and Yun Qu.
• Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Research Laboratory of Neurorehabilitation, Research Institute of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
• Neuromodulation. 2023 Dec 1; 26 (8): 153515481535-1548.

ObjectiveThe aim of this study was to investigate the comparative efficacy of neuromodulation technologies for overactive bladder (OAB) syndrome in adults.Data SourcesA computerized search was conducted of Cochrane Library, EMBASE, MEDLINE (via PubMed), Web of Science, CNKI, Wan Fang Data, and ClinicalTrials.gov up to April 21, 2022.Study SelectionThe search selected clinical trials with random allocation to percutaneous tibial nerve stimulation (PTNS), transcutaneous tibial nerve stimulation (TTNS), vaginal electrical stimulation (VES), sacral neuromodulation (SNM), parasacral stimulation (PS), pudendal neuromodulation, or placebo.Data ExtractionThe main outcomes were the voiding diary, OAB-related quality of life, and positive response rate. The Cochrane Risk of Bias tool (RoB 2.0) was used to assess the risk of bias of each included study, and the Grading of Recommendations Assessment, Development, and Evaluation tool was used to evaluate the overall evidence quality of key outcomes.Data SynthesisThe study included 21 randomized controlled trials involving 1433 participants, and all trials were used for the meta-analysis. In the network meta-analyses, five of six neuromodulation technologies, including PTNS, TTNS, VES, SNM, and PS, were related to higher efficacy than the placebo. Ranking probability showed that SNM was the most efficacious therapy for improving OAB-related quality of life, urinary episodes, and urinary frequency. For urgency incontinence episodes and the number of pads, PTNS and TTNS were the most efficacious modalities, respectively.ConclusionNeuromodulation technologies, including PTNS, TTNS, VES, SNM, and PS, may be effective and safe solutions for OAB syndrome in adults. Moreover, SNM is the most efficacious regimen for OAB-related quality of life, urinary episodes, and urinary frequency. PTNS and TTNS are the most efficacious modalities for reducing urgency incontinence episodes and the number of pads, respectively. Future studies should pay more attention to the quality of study design and report, patients who may benefit the most from neuromodulation, and the long-term effect, cost-effectiveness, and satisfaction of neuromodulation.Copyright © 2022 International Neuromodulation Society. Published by Elsevier Inc. All rights reserved.

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