• Stereotact Funct Neurosurg · Jan 2019

    The Role of Anterior Thalamic Deep Brain Stimulation as an Alternative Therapy in Patients with Previously Failed Vagus Nerve Stimulation for Refractory Epilepsy.

    • Hea Ree Park, Su Jung Choi, Eun Yeon Joo, Dae-Won Seo, Seung Bong Hong, Jung-Il Lee, Seung-Chyul Hong, Seunghoon Lee, and Young-Min Shon.
    • Department of Neurology, Inje University College of Medicine, Ilsan Paik Hospital, Goyang, Republic of Korea.
    • Stereotact Funct Neurosurg. 2019 Jan 1; 97 (3): 176-182.

    AbstractDeep brain stimulation (DBS) has provided new treatment options for refractory epilepsy; however, treatment outcomes of DBS in refractory epilepsy patients previously treated with vagus nerve stimulation (VNS) have not been clarified. Herein, treatment outcomes of DBS of the anterior nucleus of the thalamus (ANT-DBS) in patients who had previously experienced VNS failure are reported. Seven patients who had previously experienced VNS failure underwent ANT-DBS device implantation. VNS was turned off before DBS device implantation. Monthly seizure counts starting from baseline to 12-18 months after DBS were analyzed. Five (71.3%) of the 7 patients experienced a >50% reduction of seizure counts after DBS; 1 responder reached a seizure-free status after DBS therapy. Of the 2 nonresponders, 1 subject showed improvement in seizure strength and duration, which lessened the impact of the seizures on the patient's quality of life. This is the first study in which favorable outcomes of ANT-DBS surgery were observed in individual patients with refractory epilepsy who had not responded to prior VNS. Further studies with a larger number of subjects and longer follow-up period are needed to confirm the feasibility of ANT-DBS in patients who have previously experienced VNS failure.© 2019 S. Karger AG, Basel.

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