What is the emergency management and treatment for a patient who has ingested Ratol (yellow‑phosphorus) rodenticide?

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Emergency Management of Ratol (Yellow Phosphorus) Poisoning

Immediate Actions

Contact your regional Poison Control Center immediately and activate EMS, as yellow phosphorus poisoning is a life-threatening emergency requiring expert toxicological guidance and rapid transport to a hospital capable of liver transplantation. 1, 2

  • Remove all contaminated clothing and jewelry to prevent continued exposure while avoiding self-contamination 1
  • Do NOT administer anything by mouth, including water, milk, or attempts at dilution, unless specifically directed by poison control 1
  • Do NOT induce vomiting or administer ipecac, as this provides no clinical benefit and may cause aspiration 3, 1
  • Do NOT delay EMS activation to attempt home interventions 1
  • Implement immediate life-support measures including CPR according to standard protocols if cardiorespiratory arrest occurs 1

Gastric Decontamination

Activated charcoal (1 g/kg) via small-bore nasogastric tube may be administered ONLY if specifically recommended by poison control, though evidence for efficacy is limited. 3

  • Gastric decontamination should be instituted within 2 hours of exposure when possible, as survival rates are significantly higher (97.87%) compared to delayed decontamination (84.62%) 4
  • Transportation to the emergency department should not be delayed for administration of activated charcoal 5

Clinical Course and Monitoring

Yellow phosphorus poisoning characteristically presents with a conspicuous absence of signs and symptoms during the first 24 hours, followed by delayed toxidrome manifestation at 24-36 hours (range 18-72 hours). 4

Dominant Clinical Manifestations (in order of frequency):

  • Abdominal pain (52.53%) 4
  • Jaundice (22.21%) 4
  • Coagulopathy (15.15%) 4
  • Multi-organ failure (17.17%) 4
  • Hepatic encephalopathy (10.10%) 4
  • Shock (10.10%) 4
  • Acute kidney injury (7.08%) 4

Laboratory Abnormalities to Monitor:

  • Elevated AST (48.47%) and ALT (49.50%) 4
  • Bilirubin elevation (22.21%) 4
  • PT/INR prolongation (15.15%) 4
  • Metabolic acidosis (10.12%) 4
  • Serum creatinine elevation (7.08%) 4

Predictors of Poor Outcome and Mortality

The following are reliable predictors of bad outcome requiring urgent consideration for liver transplantation: 4

  • Delayed resuscitation (time to hospital presentation) 4
  • Jaundice 4
  • Hepatic encephalopathy 4
  • AST and ALT elevation >1000 IU/L 4
  • Metabolic acidosis 4
  • Refractory shock 4

Advanced Management

For patients who develop acute liver failure (characterized by hepatic encephalopathy, coagulopathy, and lactic acidosis), liver transplantation is often necessary and has shown very promising success rates. 6, 2

  • Plasmapheresis, continuous renal replacement therapy (CRRT), or cytosorb can be used as a bridge to transplant in selected patients 6, 2
  • The mean time for death is 4.22 days since exposure (range 2-8 days), with fulminant hepatic failure being the most common mode of death (77.78% of fatalities) 4
  • Mortality rate is approximately 9.1%, with the majority dying from fulminant hepatic failure 4

Additional Complications to Monitor

  • Cardiotoxicity 6
  • Rhabdomyolysis 6
  • Neutropenia 6
  • Acute pancreatitis (rare but reported post-transplant) 7

Critical Pitfalls to Avoid

  • Do not assume safety based on absence of early symptoms—the characteristic lag period of 24-36 hours before toxidrome manifestation is a dangerous window 4
  • Do not delay hospital transfer for patients with any dose uncertainty or intentional ingestion 2
  • Do not underestimate the need for early transplant evaluation in patients meeting poor prognostic criteria 2, 4

References

Guideline

Emergency Management of Rodenticide Poisoning

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026

Guideline

Management of Zinc Phosphide Ingestion

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026

Research

Rodenticide Poisoning: Critical Appraisal of Patients at a Tertiary Care Center.

Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine, 2020

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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