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Acetaminophen overdose in children and adolescents
Insights
Acetaminophen overdose in children and adolescents requires prompt evaluation. Early treatment with N-acetylcysteine (NAC) is crucial for toxic ingestions to prevent liver damage and ensure recovery.
Area of Science:
- Pediatric Toxicology
- Emergency Medicine
- Pharmacology
Background:
- Acetaminophen (paracetamol) ingestion is a frequent occurrence in pediatric populations.
- While many ingestions are managed at home, significant ingestions necessitate medical evaluation.
Purpose of the Study:
- To outline management guidelines for acetaminophen overdose in children and adolescents.
- To emphasize timely plasma level monitoring and antidote administration.
Main Methods:
- Plasma acetaminophen levels are measured 4 or more hours post-ingestion.
- Treatment with N-acetylcysteine (NAC) is initiated if levels are toxic, ideally before 16 hours.
- Concurrent evaluation for co-ingestants is recommended, especially with altered mental status.
Main Results:
- Most young children with significant ingestions can be treated effectively with NAC.
- Adolescents engaging in manipulative or suicidal ingestions require similar evaluation and treatment protocols.
- Over 99% of patients recover fully within 7-8 days, though transient hepatic abnormalities may occur.
Conclusions:
- Prompt recognition and management of acetaminophen overdose are critical for favorable outcomes in pediatric patients.
- N-acetylcysteine (NAC) is an effective antidote when administered within the recommended timeframe.
- Long-term sequelae of acetaminophen toxicity in this age group remain largely unknown.
Abstract:
Ingestion of acetaminophen by young children and adolescents is common. Most children under the age of 6 who have ingested pediatric products can be safely managed at home. Children under the age of 6 who have taken a significant ingestion should be evaluated with a plasma level 4 or more hours after ingestion and, if toxic, treated with the antidote NAC prior to 16 hours postingestion. Less than 5 per cent of children under the age of 6 with toxic plasma levels will develop transient hepatic abnormalities. Adolescents who use acetaminophen in a suicidal or manipulative attempt should be seen and evaluated with a plasma acetaminophen level 4 or more hours postingestion. If the level is in the potentially toxic range on the nomogram, they should be treated prior to 16 hours postingestion with the antidote NAC. All patients should be evaluated for the possibility of other drugs or ingestants, especially if there is a change in the sensorium early in the course. The expected course of events in a patient with a toxic level of acetaminophen in the plasma is to have nausea, vomiting, and diaphoresis the first 24 hours. Following this, the patient should feel better but may begin to develop abnormalities of SGOT, SGPT, bilirubin, and prothrombin. Toxic patients will have peak enzyme levels at 72 to 96 hours. Over 99 per cent of patients will recover to normal values by 7 to 8 days postingestion. Long-term sequelae are not known.