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Epilepsy Behav. 2004 Oct;5(5):768-71.

Complete heart block with ventricular asystole during left vagus nerve stimulation for epilepsy.

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Department of Neurology, Medical College of Ohio, Toledo, OH 43614, USA. <>


Vagus nerve stimulation (VNS) is an important therapeutic option for individuals with refractory epilepsy who have failed multiple antiepileptic drugs (AEDs). The intricate relationship of the vagus nerve to cardiac function raises concern that vagal stimulation may affect cardiac rhythm and function. Previous pre- and postmarketing studies have not shown this to be a significant problem, with the incidence of bradyarrhythmias reported to be about 0.1%. We review three cases of ventricular asystole with complete heart block that occurred during intraoperative lead tests. The purpose of these case reports is to identify the specific type of cardiac abnormality associated with vagus nerve stimulation and to identify individuals at risk.

[Indexed for MEDLINE]

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