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Abstrait

Valproate Acid (Depakote) Induced Hyperammonemic Encephalopathy in the Pediatric Populations

Hoang Nguyen, Joseph P Kitzmiller, Ferdnard Osuagwu, Vijay Chandran and Pooja Khungar

Valproate acid (Depakote) (VPA) is very effective in the treatment of various illnesses including: seizure disorders, migraine headache prophylaxis, neuralgia, and bipolar disorder. The use of VPA frequently results in elevated plasma levels of ammonia. This is seen despite normal baseline liver function test results in such patients.

In this case report, we describe two instances of VPA-induced hyper ammonemic encephalopathy in patients who had supra therapeutic levels of VPA. Family physicians, Child Neurologists, Child Psychiatrists and Pediatricians should be aware of this potential complication, and it is highly recommended to check ammonia levels in patients taking VPA who present with a change in mental status. With a rise in off-label use it is even more important that physicians are made aware of this potential complication. Treatment of VPA-induced hyperammonemic encephalopathy is still under investigation. As of yet, administration of L-carnitine is postulated to have a potential benefit in some cases.

VPA has numerous drug interactions and toxicities, including pancreatitis, thrombocytopenia, hepatitis and hyperammonemia. Here are we list two case reports of VPA induced hyperammonemic encephalopathy both occurring in patients with no history of any underlying liver pathologies. In both two cases, both patients were under stable conditions, no comatose. In both 2 cases of patients we described, they all have normal or sub therapeutic level of VPA. Because of the wide spectrum of symptoms associated with Valproate Acid induced Hepatic Encephalopathy (VHE), clinician should be aware of hyperammonenia in differential diagnosis with other common symptoms.

Avertissement: Ce résumé a été traduit à l'aide d'outils d'intelligence artificielle et n'a pas encore été examiné ni vérifié.