4.5 Article

VNS Stopping Anti-NMDA Receptor Encephalitis-Triggered Nonconvulsive Status Epilepticus

Journal

WORLD NEUROSURGERY
Volume 146, Issue -, Pages 364-+

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.wneu.2020.10.076

Keywords

Epilepsy; Functional neurosurgery; Status epilepticus; VNS

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This case describes the first reported instance of ovarian teratoma causing ANRE, which was terminated with VNS to stop nonconvulsive status epilepticus (NCSE). The temporal correlation suggests that VNS significantly altered the natural history of the patient's NCSE-ANRE. As more data is collected and VNS treatment is more liberally used to treat NCSE, especially in cases of ANRE, stronger layers of evidence will emerge.
BACKGROUND: Anti-NMDA receptor encephalitis (ANRE) is a rare autoimmune neurologic disorder characterized by encephalitis and a constellational of symptoms, including seizures, psychiatric disturbances, autonomic instability, and respiratory insufficiency. It is caused by the anti-NMDA receptor antibody. The most common etiologies for ANRE include malignancy and infection. Ovarian teratoma is the most commonly associated malignancy. CASE DESCRIPTION: We describe the first reported case to our knowledge of ovarian teratoma causing ANRE resulting in nonconvulsive status epilepticus (NCSE), which was terminated with vagus nerve stimulation (VNS). CONCLUSIONS: This case report provides a temporal correlation suggesting that VNS significantly altered the natural history of this patient's NCSE-ANRE. As more data are collected, and the VNS treatment modality more liberally used to treat NCSE, especially in the situation of ANRE, stronger layers of evidence will emerge to fill the gaps of understanding beyond this case report.

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