Multifocal myoclonus as a presentation of levetiracetam toxicity

Autor: Mohamad Z. Koubeissi, Mei Bou Nasif, Shweta Varade
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Clinical Neurophysiology Practice
Clinical Neurophysiology Practice, Vol 6, Iss, Pp 281-284 (2021)
ISSN: 2467-981X
Popis: Highlights • Levetiracetam (LEV) is a widely used antiseizure medication, but LEV toxicity is not commonly reported. • We report a patient with chronic kidney disease who developed multifocal myoclonus after treatment with LEV. • The findings suggest the possibility of an inverted U-shaped dose–response of the anti-myoclonic effect of LEV.
Background Levetiracetam (LEV) is widely used for treatment of focal and myoclonic seizures, but reports of LEV toxicity are scarce. Here, we report a rare case of multifocal myoclonus due to LEV toxicity in a patient with chronic renal insufficiency. Case presentation A 52-year-old woman with history of chronic kidney disease was admitted to the ICU for sedation and intubation after a cardiac arrest. She developed nonconvulsive status epilepticus that resolved after administration of propofol while receiving LEV 1500 mg twice a day. After holding the propofol infusion, the patient started having multifocal myoclonic jerks, documented on video-EEG recordings with a supratherapeutic level of LEV. After discontinuation of LEV, the myoclonus resolved. Conclusion This is a unique manifestation of LEV toxicity, which has been scarce in the literature. It suggests an inverted U-shaped dose–response of the antimyoclonic effect of LEV.
Databáze: OpenAIRE