BESTOPAM 20ML INJ

• Reactivates acetylcholinesterase before the enzyme-poison bond ages and becomes irreversible, which atropine cannot do.
• Particularly effective against the nicotinic effects of organophosphate poisoning — muscle fasciculation, weakness and respiratory muscle paralysis — which atropine does not treat.
• Used together with atropine, the two agents cover the muscarinic and nicotinic components of the toxidrome respectively.
• Early administration can reduce the requirement for prolonged mechanical ventilation.
• The injectable presentation supports rapid administration in the emergency setting where minutes matter.

Not everyone gets these. Most are mild and settle as the course finishes.

• A hospital emergency antidote for administration by trained medical staff only, with airway support and monitoring immediately available.
• Pralidoxime does not replace atropine. Atropine must be given first and titrated to effect; pralidoxime is an adjunct.
• Effectiveness falls sharply with delay — once the enzyme-poison bond has aged, reactivation is no longer possible. Give as early as possible.
• Rapid intravenous administration can cause hypertension, tachycardia and laryngospasm; infuse slowly at the recommended rate.
• Dose reduction is required in renal impairment, as pralidoxime is renally excreted.
• Use with caution in myasthenia gravis, where it can precipitate a myasthenic crisis.
• Decontamination of the patient and protection of staff from secondary exposure are part of the same emergency response.
• Not effective in carbamate poisoning, where it may worsen the outcome — establish the poison class before giving.