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Case Report • Rev. Soc. Bras. Med. Trop. 56 • 2023 • https://doi.org/10.1590/0037-8682-0374-2023   copy

Early-Onset Respiratory Muscle Paralysis in Crotalic Envenomation: A Case Study

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Crotalic envenomation is responsible for approximately 8%-13% of ophidism cases in Brazil, yet it is associated with the highest mortality among snakes. We describe the case of a patient bitten by a rattlesnake who developed ventilatory muscle paralysis within hours after envenomation. While diaphragmatic paralysis is a rare late neurotoxic event following crotalic envenomation, in this case, paralysis occurred early but was rapidly reversed after antivenom administration. This report discusses potential contributing factors based on a comprehensive literature review.

Keywords:
Crotalus; Respiratory failure; Antivenom

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