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Anti-N-methyl-D-aspartate (anti-NMDA) receptor encephalitis is a rare clinical entity that typically presents with psychiatric disturbances and neurological deficits. It is commonly associated with ovarian teratomas. Although these patients demonstrate a predilection to develop cardiac arrhythmias, such complications are frequently self-limited. We chronicle here a unique case of a young woman with adnexal teratoma who experienced a tonic-clonic seizure and cardiac arrest. Electrocardiogram showed polymorphic ventricular tachycardia, consistent with torsade de pointes. Based on extensive diagnostic workup and exclusion of probable etiologies, she was diagnosed with anti-NMDA receptor encephalitis. To the best of our knowledge, this report represents the first case of anti-NMDA receptor encephalitis complicated by ictal torsades de pointes, leading to cardiac arrest. This paper illustrates that patients with anti-NMDA receptor encephalitis can develop life-threatening cardiac dysrhythmia and cardiac arrest, requiring urgent management. Clinicians should be vigilant for severe autonomic dysfunction as prompt etiology establishment is of paramount importance in these patients.

Anti-N-methyl-D-aspartate Receptor Encephalitis Associated with Ictal Torsades de Pointes and Cardiac Arrest