Pesticide Mixer with Pinpoint Pupils and Vomiting
A 29-year-old farm worker has been mixing an organophosphate insecticide in a rice field for 40 minutes without a respirator. Concentrate spilled onto his coveralls. Thirty minutes later he has sweating, vomiting, abdominal cramps, blurred vision, pinpoint pupils, drooling, heart rate 48, respiratory rate 20, SpO2 92% on room air, and confusion. He is sitting on the ground, and a coworker is urging him to drink water and vomit. The empty pesticide container is nearby; the label says 'organophosphate - toxic by skin contact and inhalation'. The nearest rural health unit is 20 minutes away; the hospital is 50 minutes away. No atropine is available on site. Your kit has nitrile gloves, a CPR mask, suction, oxygen, and plastic bags.
1. What scene, PPE, and decontamination steps must occur before and during care?
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Scene and PPE. Move him away from the spill and upwind, keep others out, and put on nitrile gloves and eye protection. Do not kneel in contaminated soil. Decontamination. Cut off the contaminated coveralls rather than pulling them over the head, double-bag them, and wash the skin with copious soap and water; flush eyes if splashed. Remove and bag boots. Reasoning. Organophosphates are absorbed through skin, so decontamination is a treatment, not just cleanup; it also protects the ambulance crew. Do not induce vomiting or give anything by mouth.
2. How would you manage airway, breathing, and the vomiting, and what should you not do?
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Airway and breathing. He is vomiting and drooling, so suction the mouth, place him in a recovery position if there is no spinal concern, and give oxygen if trained. Use a CPR mask or bag-mask for any rescue breathing; do not give mouth-to-mouth without a barrier because of contamination. What not to do. Do not induce vomiting, do not give oral fluids while he is confused or vomiting, and do not give atropine unless you are trained and authorized under a medical protocol. Monitoring. Recheck breathing, pulse, oxygen saturation, and mental status; watch for seizures and worsening secretions. Reasoning. The pinpoint pupils, sweating, vomiting, and bradycardia fit cholinergic poisoning; the immediate threats are airway obstruction from secretions and respiratory failure.
3. What is your transfer priority and handover information, and why is atropine not your decision?
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Transfer. Call ahead and transfer urgently to the hospital, not the rural health unit, because organophosphate poisoning can progress to respiratory failure and seizures. Handover. State the agent, duration of exposure, spill on clothing, decontamination done, symptoms and times, vitals, and oxygen given. Atropine. Atropine is an antidote that requires medical direction and repeated dosing; a first aider should not administer it unless the site has a written protocol and training. Documentation. Record the product name, container, exposure route, decontamination, and transfer time. Reasoning. Rapid transfer and airway support are the first aider's main contributions; antidote decisions belong to receiving clinicians.