Management of Alcohol and Unknown Substance Overdose After Naloxone Response

Initial Assessment and Monitoring

• The American Heart Association recommends continuously monitoring vital signs, including respiratory rate, blood pressure, heart rate, oxygen saturation, and temperature, during the 24-hour observation period 1, 2
• Baseline biochemical tests, including complete blood count, comprehensive metabolic panel, liver function tests, blood glucose levels, and blood alcohol level, should be obtained 3

Supportive Treatment

• The American Academy of Pediatrics recommends ensuring adequate airway management and providing supplemental oxygen if needed 4, 3
• Administering intravenous fluids, such as normal saline, to correct dehydration and electrolyte imbalances is recommended 3
• Thiamine 100 mg IV should be given before glucose administration to prevent Wernicke's encephalopathy 3

Naloxone Considerations

• The American Heart Association notes that additional doses of naloxone may be necessary if respiratory depression recurs, as naloxone has a shorter duration of action than many opioids 1
• Continued observation for at least 2 hours after the last naloxone dose is recommended, with longer observation for suspected long-acting opioid ingestion 2

Special Considerations for Mixed Overdose

• The presence of xylazine, an α-2 agonist veterinary sedative, may be possible in the opioid supply and is not reversed by naloxone 5
• Consider the possibility of benzodiazepine co-ingestion, which would not respond to naloxone, and avoid flumazenil administration due to the risk of seizures 6, 3

Discharge Criteria

• The patient should have normal vital signs and be fully alert and oriented before discharge, with metabolic abnormalities corrected 2, 3
• Consider substance use disorder consultation and referral to appropriate resources before discharge, and provide education about overdose prevention and naloxone use 3, 1