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Treatment of pediatric antimuscarinic delirium with oral rivastigmine.

Brandtly YakeyVarun VohraAmarilis MartinAndrew M King
Published in: Oxford medical case reports (2023)
Antimuscarinic drug toxicity is a common pediatric emergency, which produces central and peripheral symptoms. Treatment of agitation and hyperactive antimuscarinic delirium, with first-line agents like cholinesterase inhibitors or benzodiazepines, is imperative to prevent severe toxicity. Intravenous physostigmine salicylate is a cholinesterase inhibitor that is commonly used to treat central antimuscarinic delirium. Its chemical structure facilitates crossing of the blood-brain barrier. Overlapping nationwide physostigmine and benzodiazepine shortages have prompted consideration of therapeutic alternatives. Rivastigmine is a long-acting cholinesterase inhibitor with a similar chemical structure to physostigmine. It represents a potential therapeutic option for antimuscarinic delirium. Rivastigmine offers potential benefits over physostigmine including a longer duration of action, slower rate of central nervous system penetration, more favorable side effect profile, and availability in multiple formulations. A paucity of literature exists describing the use of rivastigmine for central antimuscarinic delirium. We describe the effective use of oral rivastigmine in a child with central antimuscarinic delirium.
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