Causes and pathogenetic rationale
The development of Reye's syndrome is directly linked to the pharmacotherapy of viral diseases in young children. The key etiological factor is the administration of acetylsalicylic acid (aspirin) for fever management.
The disease manifests against the background of viral infections, most commonly including:
- Influenza;
- Chickenpox;
- Respiratory syncytial (RS) virus infection;
- Adenoviral infection.
The pathogenesis of the syndrome involves the development of acute hepatic encephalopathy. At the tissue level, the process is accompanied by marked fatty degeneration of two critically important organs: the liver and the brain. This condition develops rapidly and poses a direct threat to the patient's life, resulting in high mortality rates.
Important pediatric rule
Considering the severity of the pathogenetic mechanisms of Reye's syndrome, a strict safety rule has been established in modern medicine: the use of acetylsalicylic acid in children with viral infections is an absolute contraindication.
Even with pronounced fever of viral etiology (e.g., in a three-year-old child with influenza), prescribing salicylates is categorically unacceptable. The risk of developing acute encephalopathy with fatty degeneration vastly outweighs any potential benefit from the antipyretic effect of aspirin.
Alternative and safe symptomatic therapy
Since the use of salicylates is excluded, symptomatic therapy for fever and inflammatory manifestations in children must be based on safe alternatives. The mainstay of treatment for typical uncomplicated viral infections is aimed at eliminating clinical manifestations.
Safe antipyretics: Only two active substances are recognized as drugs of choice in pediatrics:
- Paracetamol;
- Ibuprofen.
Comprehensive symptom relief:
- Non-pharmacological measures: abundant warm fluids to ensure natural detoxification of the body and adequate nutrition.
- Relief of respiratory syndrome: for cough, mucolytics, expectorants, or antitussives are prescribed (depending on the nature of the symptom).
- Relief of rhinitis: for nasal congestion, intranasal decongestants (vasoconstrictors) are used, such as xylometazoline, oxymetazoline, or naphazoline.
Etiotropic therapy (e.g., ribavirin for RSV infection or topical interferons for adenovirus) is prescribed in parallel, but does not override the rules for safe fever management.
To remember the ban: "Aspirin + Virus = SHARP deterioration (REYE's syndrome)"
Class and exam questions
Can a child be given aspirin for a high temperature if paracetamol does not help?
Categorically no. The use of acetylsalicylic acid in children with viral fever is an absolute contraindication due to the risk of life-threatening Reye's syndrome.
Which organs are affected in Reye's syndrome?
The pathology is based on acute hepatic encephalopathy accompanied by fatty degeneration of the liver and brain.
Which infections most often serve as the background for the development of this complication?
Most often, the syndrome is associated with the intake of salicylates against the background of influenza, chickenpox, adenoviral, and respiratory syncytial infections.
What else to study on this topic
- Pathogenesis of fatty liver degeneration under toxic exposure
- Mechanisms of development of hepatic encephalopathy
- Specific therapy for respiratory syncytial virus infection in children (Palivizumab)
- Principles of treatment of adenoviral infection and bronchospastic syndrome
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