Author Interviews, Depression / 04.04.2017
Vagus Nerve Stimulation Improved Treatment-Resistant Depression
MedicalResearch.com Interview with:
Scott T. Aaronson, M.D
Psychiatrist, The Retreat at Sheppard Pratt
Director of Clinical Research
Sheppard Pratt Health System
Baltimore, MD
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: This study is the largest ever conducted on patients with severe, chronic depression, a group typically ignored by clinical research in psychiatry. We looked at individuals who, on average, had received 8 unsuccessful treatment interventions in the past. These individuals were split into two groups and examined over five years. One group was given proven anti-depressant treatments (medications, psychotherapy, and/or electroconvulsive therapy (ECT)), and one group was given both anti-depressant treatments and VNS Therapy—an implantable, pacemaker-like device that stimulates the vagus nerve, which regulates mood in the brain.
• The study found that 67.9% of the VNS therapy group responded to treatment, compared to 40.9% of patients receiving treatment as usual. Importantly, the VNS therapy group reported responses earlier in treatment, and responses were sustained longer than those receiving treatment as usual.
• VNS therapy improved treatment effect in individuals whether they had unipolar or bipolar disorder, and whether or not they had responded to ECT in the past.
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