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  • Deep Brain Stimulation Versus Vagus Nerve Stimulation in the Treatment of Therapy-Resistant Depression: A Systematic Review and Meta-Analysis

    Final Number:

    Lucas Ribas; Rogerio Aires MD, PHD; Paulo Henrique Pires de Aguiar MD PhD; Bruno Camporeze; Iracema Estevão; Mariany Melo; Thiago Salati; Vitor Lopes

    Study Design:
    Clinical Trial

    Subject Category:

    Meeting: Congress of Neurological Surgeons 2017 Annual Meeting - Late Breaking Science

    Introduction: The World Health Organization estimates that depression will be the third leading cause of debilitating diseases by 2030. At least 20% of patients are depressants resistant to conventional treatments (TRD), such that the modern psychosurgery has been becoming part of the therapeutic arsenal

    Methods: A systematic review of the prospective clinical trials conducted in American and European centers by Medline and Pubmed from 2000 to 2016, p<0.05, n> 10, associated to a review of the references cited by all relevant localized studies. We obtained 66 references for vagal nerve stimulation (VNS) and 137 for deep brain stimulation (DBS), 10 studies of VNS and 3 of DBS were selected according to eligibility criteria. An exploratory meta-analysis was performed through the event rates found.

    Results: We showed the presence of 643 patients with TRD in the VNS and 58 patients in DBS studies. The VNS showed a response rate after 12 months of 42% (95%, CI=31.2% to 56.7%) associated to the remission rate of 22.3% (95%, CI=16.5% to 30%). While the DBS rates were 37% (95%, CI=22.9% to 59.6%) and 26.2% (95%, CI=15.4% to 44.5%), respectively.

    Conclusions: Individual analysis of clinical trials demonstrates that both VNS and DBS are promising resources in the treatment of TRD, especially in the short and medium term, however most studies are not randomized. The meta-analysis revealed high heterogeneity due to the reduced number of clinical trials, technical differences and selection bias.

    Patient Care: The adequate management of patients affected by depression can be result in improvement of quality of life, as well as the reduction of governmental or particular health costs.

    Learning Objectives: The goal of this study is analyzes and discuss the potential for the application of VNS and DBS in the subgenual cingulate cortex in patients affected by depression medically intratactable based on systematic review and meta-analysis.

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