Approach Toxic Alcohol Ingestion in the PICU

IntroductionHosts: Dr. Pradip Kamat (Children’s Healthcare of Atlanta/Emory University) and Dr. Rahul Damania (Cleveland Clinic Children’s Hospital)Mission: A podcast dedicated to current and aspiring pediatric intensivists, exploring intriguing PICU cases and acute care pediatric managementFocus of the Episode: Managing toxic alcohol ingestion in the PICU with emphasis on ethanol, methanol, ethylene glycol, propylene glycol, and isopropyl alcoholCase PresentationPatient Details: A 7-month-old male presented with accidental ethanol ingestion after his formula was mixed with vodkaKey Symptoms: Lethargy, uncoordinated movements, decreased activity, and ethanol odorInitial Labs & Findings:EtOH level: 420 mg/dL.Glucose: 50 mg/dL.Normal CXR and EKG.PICU Presentation: Tachycardic, normotensive, lethargic, with signs of CNS depressionInitial Management: Dextrose infusion, glucose monitoring, neurological observation, and ruling out complicationsKey Learning Points from the CaseToxic alcohol ingestion in pediatrics requires rapid stabilization and targeted interventionsHypoglycemia and CNS depression are common features of ethanol toxicity in infantsManagement prioritizes glucose correction, airway support, and close neurological monitoringDeep Dive: Toxic Alcohols in the PICU1. EthanolTypical Presentation in Infants/Toddlers: Hypotonia, ataxia, coma, hypoglycemia, hypotension, and hypothermiaDiagnostic Workup:Focus on CNS and metabolic effectsLabs: Glucose, electrolytes, bicarbonate, anion gap, ketones, toxicology screenImaging (head CT) if indicatedManagement: Stabilization, IV dextrose for hypoglycemia, NPO status until alert, and consultation with poison control and social work2. MethanolSources: Windshield fluids, cleaning agents, moonshineClinical Stages:Early: Dizziness, nausea, vomiting (0–6 hours)Latent: Asymptomatic (6–30 hours)Late: Vision disturbances, seizures, respiratory failure (6–72 hours)Key Symptoms: “Snowstorm blindness” from retinal toxicityManagement: Fomepizole, correction of metabolic acidosis, and hemodialysis in severe cases3. Ethylene GlycolSources: Antifreeze, brake fluids, household cleanersPathophysiology: Metabolism to glycolic acid (acidosis) and oxalic acid (renal failure due to calcium oxalate crystals)Red Flags: Hypocalcemia, renal failure, QT prolongationManagement: Fomepizole, supportive care, and hemodialysis for severe toxicity4. Propylene GlycolSources: Medications like lorazepam and pentobarbitalPresentation: High anion gap metabolic acidosis at high doses, with renal and liver dysfunctionManagement: Discontinue offending agent, supportive care, and hemodialysis if severe5. Isopropyl AlcoholSources: Disinfectants, hand sanitizersPresentation: CNS depression, GI irritation, fruity acetone breath, but no metabolic acidosisManagement: Supportive care; fomepizole and ethanol are ineffectiveKey Laboratory InsightsOsmolar Gap Formula:Measured Osmolality - Calculated OsmolalityA high osmolar gap indicates unmeasured osmoles like toxic alcohols.Lactate Gap in Ethylene Glycol: Discrepancy between bedside and lab lactate levels due to glycolate interferenceManagement PearlsEthanol and Ethylene Glycol: Fomepizole as first-line treatment; hemodialysis for severe casesMethanol: Similar approach with additional focus on preventing blindnessPropylene Glycol: Monitor lactate and renal function, discontinue offending medicationsIsopropyl Alcohol: Supportive care, no acidosis presentMnemonics for Toxic AlcoholsMEGA GAP:Methanol and Ethylene Glycol: Anion Gap Acidosis with elevated Osmolar GapIsopropyl Alcohol: Isolated Osmolar Gap (no acidosis)Propylene Glycol: Mimics ethylene glycol with HAGMA at high dosesTakeaway MessagesEarly recognition of toxic alcohol ingestion is critical for successful managementDifferentiate between toxic alcohols using anion gap, osmolar gap, and clinical presentationEngage poison control and social work early in the processConclusionPediatric toxic alcohol ingestions are rare but potentially life-threateningFomepizole is a cornerstone therapy for methanol and ethylene glycol toxicitySupportive care remains essential across all toxic alcohol ingestionsConnect with US!Twitter: @PICUDocOnCallEmail: [email protected]