Treatment-Resistant Depression Registry

Enrollment of TRD patients treated with VNS Therapy will consist of patients originally enrolled in the registry as well as patients who have completed the D-21 Dosing Study and are enrolled in the Registry for Long-Term Follow-up. Sites will maintain a screening log of all patients who have been screened for original TRD Registry patients. Please note that because this is a post-approval registry, Cyberonics does not cover the cost of VNS Therapy implantation.