A Study to Assess Effectiveness and Efficiency of VNS Therapy in Patients With Difficult to Treat Depression.
brief summary
The primary objective of this study is to assess short, mid and long-term clinical outcomes in patients with difficult to treat depression (such as patients with treatment resistant depression) treated with Vagus Nerve Stimulation (VNS) Therapy as adjunctive therapy.
detailed description
The population under study comprises a real-world patient population with difficult to treat depression: patients diagnosed with unipolar or bipolar disorder with chronic or recurrent depression who fail to achieve an adequate response to standard psychiatric management.
The diagnosis of depression and comorbid disorders will be determined based on the Mini International Neuropsychiatric Interview (MINI).
A minimum of five hundred (500) patients will be implanted with a VNS Therapy System and up to eighty (80) sites may participate in this study.
Enrollment will take 8 years, based on competitive enrollment. For each subject a baseline visit will occur between 1 and 6 weeks before implant.
Once implanted with the device, subjects will be followed-up for a minimum of 36 months and a maximum of 60 months. The study may stop when the last subject has reached the 36 months follow-up.
official title
A Global PRospective, Multi-cEnter, ObServational Post-markeT Study tO Assess shoRt, Mid and Long-term Effectiveness and Efficiency of VNS Therapy® as Adjunctive Therapy in reaL-world patIents With diFficult to Treat dEpression.