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[Systemic carnitine deficiency: its place in Reye's syndrome (author's transl)]
Insights
Systemic carnitine deficiency can cause cardiomyopathy and hypoglycemia in children. Early diagnosis and treatment with oral carnitine and a low-fat diet significantly improve symptoms.
Area of Science:
- Biochemistry
- Pediatrics
- Metabolic Disorders
Background:
- Systemic carnitine deficiency (SCD) is a rare inherited metabolic disorder affecting fatty acid oxidation.
- It can lead to severe multi-organ dysfunction, particularly affecting the heart, liver, and muscles.
Observation:
- A 3-year-old child presented with progressive cardiomyopathy, recurrent non-ketotic hypoglycemia, and hepatic encephalopathy.
- Episodes were triggered by upper respiratory infections and complicated by cardiac arrest.
Findings:
- Treatment with oral carnitine (4 g/24 h) and a low-fat diet (20% of calories) led to marked improvement in cardiac, hepatic, and neuromuscular symptoms.
- Despite clinical improvement, tissue carnitine levels remained depleted.
Implications:
- SCD should be considered in pediatric patients presenting with symptoms mimicking Reye's syndrome.
- Prompt diagnosis and management are crucial for preventing life-threatening complications.
- This case highlights the importance of early intervention in metabolic cardiomyopathies.
Abstract:
A case of systemic carnitine deficiency in a 3-year-old child is reported. Clinical presentation included progressive cardiomyopathy and severe episodes of hypoglycaemia without ketosis, accompanied with hepatic encephalopathy. Each episode was initiated by upper respiratory infection and complicated by cardiac arrest. Oral carnitine (4 g/24 h) and low fat diet (20% of total calories) resulted in dramatic improvement of cardiac, hepatic and neuromuscular symptoms, while tissues remained depleted. Systemic carnitine deficiency should be suspected in patients with symptoms resembling Reye's syndrome.