• Young child who was unsupervised with chemicals and presents with cyanosis, diaphoresis, miosis, rhinorrhea, drooling, signs of bronchoconstriction, and increased bowel sounds, all of which is associated with organophosphate poisoning –> Decreased acetylcholinesterase activity –> Increased acetylcholine –> Increased parasympathetic functions, increased sweating, muscle paralysis (due to repetitive stimulation)
• Key idea: Treated with atropine (muscarinic receptor antagonist) and pralidoxime (regenerates acetylcholinesterase)
• Lead poisoning would not present acutely
• Ethylene glycol –> Anion-gap metabolic acidosis and kidney injury (classically renal stone)
• Carbon monoxide poisoning –> Cherry-red skin, head, altered mental status

https://step-prep.org/tutoring/