Improvement in delirium and visuospatial function after rivastigmine in antimuscarinic toxicity: a case report

AbstractTreatment of antimuscarinic toxicity has become more difficult in the United States due to an ongoing national shortage of physostigmine. Rivastigmine has emerged as an alternative, off-label therapy due to its similar mechanism of action as a reversible, centrally-acting acetylcholinesteras...

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Bibliographic Details
Main Authors: Matthew S. Correia, Robert G. Hendrickson
Format: Article
Language:English
Published: Taylor & Francis Group 2023-12-01
Series:Toxicology Communications
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/24734306.2023.2253688
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Summary:AbstractTreatment of antimuscarinic toxicity has become more difficult in the United States due to an ongoing national shortage of physostigmine. Rivastigmine has emerged as an alternative, off-label therapy due to its similar mechanism of action as a reversible, centrally-acting acetylcholinesterase inhibitor. We present a case of a diphenhydramine overdose where the patient exhibited classic central antimuscarinic delirium characterized by inattention, floccillation, and deficits in spatial planning manifested by the inability to properly draw a clock. These symptoms rapidly resolved after treatment with oral rivastigmine.
ISSN:2473-4306