Organophosphate Toxicity

Move the patient from the contaminated atmosphere, protect personnel from secondary contamination, remove clothing, and wash exposed skin thoroughly with soap and water. If soap and water are unavailable after suspected nerve-agent skin exposure, dry removal with absorbent material is a fallback measure. ema europa eu+1ema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...CDCNosocomial Poisoning Associated with Emergency Department Treatment of Organophosphate Toxicity – Georgia 2000

Perform immediate airway, breathing, circulation, and neurologic assessment. Give oxygen, establish monitoring and IV access, and provide ventilatory support when bronchorrhea, bronchospasm, coma, seizures, or respiratory muscle weakness compromises ventilation. Early resuscitation with atropine, oxygen, respiratory support, and fluids is recommended to improve oxygen delivery. BMJ+2BMJToxidromes and a general approach to poisoningThe LancetReview Management of acute organophosphorus pesticide poisoningema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...

Do not delay atropine for cholinesterase results. In suspected organophosphate toxicity, use serial lung examination and secretion burden as the dominant treatment endpoint: resolution of bronchorrhea is the most important antimuscarinic effect. BMJ+1BMJToxidromes and a general approach to poisoningPubMedOrganophosphate Toxicity - StatPearls - NCBI Bookshelf

Suspect acetylcholinesterase-inhibiting organophosphate exposure after pesticide contact, deliberate ingestion, occupational exposure, or a potential nerve-agent event when miosis, diaphoresis, excessive secretions, bronchospasm, bradycardia, diarrhea, fasciculations, or central neurologic toxicity occur together. Organophosphate poisoning follows dermal, inhalational, or oral exposure and may progress to seizures or respiratory failure. BMJ+1BMJOrganophosphate poisoning - Symptoms, diagnosis and treatment | BMJ Best Practice USPubMedOrganophosphate Toxicity - StatPearls - NCBI Bookshelf

Obtain a 12-lead ECG and serum cholinesterase level when available after initial stabilization. Serum cholinesterase testing can support the clinical diagnosis, while ECG identifies associated rhythm or conduction abnormalities that may alter monitoring and resuscitation; neither test should delay atropine or respiratory intervention. WHO+1WHO[PDF] standard-treatment-protocol-of-emergency-health-service-package.pdfBMJToxidromes and a general approach to poisoning

Interpret a cholinesterase value in clinical context. Acetylcholinesterase inhibition from organophosphates may recover more slowly than butyrylcholinesterase, creating a cumulative inhibitory effect; serial laboratory values therefore do not substitute for serial respiratory examinations and atropine requirement. Wiley+1WileyAcetylcholinesterase as a Biomarker in Environmental and ...ScienceDirectAcute organophosphorus poisoning - ScienceDirect

For adult nerve-agent or highly toxic organophosphate exposure, administer atropine 2 mg IM or IV and double the dose every 5-10 minutes until the chest is clear on auscultation and heart rate and systolic blood pressure are adequate; the cited guidance specifies targets of heart rate 80 beats/minute and systolic blood pressure 80 mm Hg. After control, continue atropine 1-2 mg/hour by IV infusion, adjusting to recurrent secretions, for up to 24 hours. ema europa euema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...

For pesticide poisoning, atropine should be titrated to the same clinically meaningful endpoint—resolution of bronchorrhea—rather than using mydriasis as the principal target. One emergency protocol describes an atropine maintenance infusion at 20% of the atropinizing dose per hour, with tapering after stabilization. BMJ+1BMJToxidromes and a general approach to poisoningWHO[PDF] standard-treatment-protocol-of-emergency-health-service-package.pdf

Use pralidoxime as an acetylcholinesterase-sparing adjunct with atropine. For adult nerve-agent exposure, cited guidance lists an initial pralidoxime chloride dose of 600 mg, 1,200 mg, or 1,800 mg IM/IV according to exposure severity, followed by 10-20 mg/kg in 0.9% saline by IV infusion; continue until atropine has not been required for 12-24 hours. A separate emergency protocol uses 2 g IV in 100 mL normal saline over 30 minutes followed by 1 g IV four times daily. ema europa eu+1ema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...WHO[PDF] standard-treatment-protocol-of-emergency-health-service-package.pdf

The pralidoxime decision requires clinical judgment because adult trial data have not conclusively established efficacy in acute organophosphate poisoning. Do not withhold atropine or respiratory support while considering oxime therapy, and do not use pralidoxime alone as treatment for acute toxicity. WHO+1WHO[PDF] THE SELECTION AND USE OF ESSENTIAL MEDICINES - IRISBMJToxidromes and a general approach to poisoning

Maintain contamination control during emergency care. Remove clothing and decontaminate skin with soap and water after dermal exposure; this reduces ongoing absorption and limits nosocomial poisoning risk. ema europa eu+1ema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...CDCNosocomial Poisoning Associated with Emergency Department Treatment of Organophosphate Toxicity – Georgia 2000

Consider gastric decontamination only after airway and hemodynamic stabilization. Nasogastric aspiration of liquid poison may be used for high-risk ingestions such as organophosphates, whereas orogastric lavage carries substantial risk with limited evidence of benefit. Activated charcoal may be considered within 1 hour of a potentially toxic ingestion but is contraindicated with an unprotected airway or CNS depression. BMJBMJToxidromes and a general approach to poisoning

Admit patients with ongoing bronchorrhea, respiratory compromise, coma, seizures, or a continuing atropine infusion to an intensive-care setting for ventilatory support and frequent reassessment. Respiratory failure can arise from impaired respiratory pump function and/or direct lung injury in poisoning; monitor serial lung examination, oxygenation, ventilation, mental status, ECG, and recurrent secretion burden. Oxford Academic+2Oxford AcademicPoisoning | Oxford Textbook of Respiratory Critical CarePubMedOrganophosphate Toxicity - StatPearls - NCBI BookshelfWHO[PDF] standard-treatment-protocol-of-emergency-health-service-package.pdf

Nerve agents are organophosphate compounds with substantially greater toxicity than pesticide organophosphates. Move patients to uncontaminated air, remove clothing, decontaminate skin, and coordinate antidote delivery with hazardous-materials procedures to prevent rescuer exposure. Oxford Academic+1Oxford AcademicPathophysiological and clinical aspects of combat ...ema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...

Use atropine plus an oxime as first-line pharmacologic treatment for nerve-agent exposure, with supportive treatment for respiratory failure, coma, and seizures. Autoinjector products containing atropine and an oxime may be used under applicable emergency-response protocols. ema europa eu+1ema europa eu[PDF] ema-guidance-use-medicinal-products-treatment-case-exposure ...ScienceDirectOrganophosphorus nerve agent poisoning - ScienceDirect.com