Calculate clinical toxicity dosage and emergency gastric decontamination windows for Bracken Fern (Pteridium) Thiaminase exposure in horses. Scientific toxicology parameters and veterinarian action thresholds.
The baseline clinical toxicity threshold is approximately 60 mg/kg. Doses approaching or exceeding 5x this threshold represent critical or life-threatening exposure.
Primary mechanism: Thiaminase Type I cleavage of vitamin B1 causing polioencephalomalacia. Symptoms typically manifest in gastrointestinal, cardiovascular, or central nervous systems depending on absorbed bioavailability.
Emesis must NEVER be induced if the patient is already showing neurological symptoms (ataxia, tremors, seizures), is comatose, has ingested caustic/corrosive agents, or is a species incapable of vomiting (e.g., horses, rabbits, rodents).