Monday, October 14, 2024

EMS Medical Terminology - Reye’s Syndrome


Reye’s Syndrome is a rare but serious condition that causes sudden liver and brain dysfunction. It primarily affects children and teenagers, often following a viral illness like the flu or chickenpox, especially if treated with aspirin. 

For EMS providers, understanding Reye’s Syndrome is critical because early recognition and treatment are vital to preventing severe outcomes. It is an example of an eponymous medical term.

Key Points for EMS Providers:

- Pathophysiology: Reye’s Syndrome involves a two-phase illness: initial viral infection (e.g., influenza, varicella) followed by sudden hepatic dysfunction and encephalopathy.

The exact cause is unknown, but there is a strong association with aspirin use during viral illnesses.

- Risk Factors: 

  • Most common in children aged 4 to 12.
  • Recent viral illness (e.g., influenza, varicella).
  • Use of aspirin or salicylate-containing products.

Signs and Symptoms to Recognize in the Prehospital Setting:

- Early Stage Symptoms:

  • Persistent or severe vomiting.
  • Lethargy or drowsiness.
  • Irritability or behavioral changes.
  • Loss of energy.

- Progressive Symptoms:

  • Confusion, disorientation.
  • Agitation, delirium, or combativeness.
  • Seizures.
  • Decreased level of consciousness, progressing to coma.
  • Signs of increased intracranial pressure (e.g., abnormal posturing, pupil changes).

Differentiating Reye’s Syndrome:

Reye’s Syndrome can initially mimic other conditions, such as meningitis, encephalitis, or intoxication. It’s essential to have a high index of suspicion if the history suggests recent viral illness and aspirin use.

Prehospital Assessment:

- Primary Survey: Ensure airway, breathing, and circulation are intact. Manage ABCs promptly.

- Neurological Assessment: Use tools like the Glasgow Coma Scale (GCS) to assess mental status. Look for changes in alertness, confusion, and any neurological deficits.

- History: Ask about recent viral illnesses, medications, and the use of any aspirin or salicylate-containing products.

Prehospital Management:

- Ensure Airway Protection: If the patient is altered or has a decreased level of consciousness, consider advanced airway management.

- Monitor for Seizures: Be prepared to treat seizures with benzodiazepines if they occur.

- Prevent Hypoglycemia: Reye’s Syndrome is associated with metabolic disturbances. If hypoglycemia is suspected (common in Reye’s), administer IV dextrose if appropriate.

- Minimize External Stimulation: To avoid increasing intracranial pressure.

- Rapid Transport: This is a time-sensitive condition. Transport the patient to a facility equipped to manage pediatric neurological and hepatic emergencies.

Documentation and Communication:

Clearly document the patient's history, especially recent illness and medication use.

Relay any signs of altered mental status, recent viral infections, and aspirin use to the receiving facility.

Conclusion

Reye’s Syndrome, while rare, should be considered in children and teens presenting with unexplained vomiting, altered mental status, or seizures, especially if linked to a recent viral illness and aspirin use. 

Early recognition, supportive care, and rapid transport to a higher-level facility are critical components of prehospital management.

By maintaining a high index of suspicion and providing appropriate prehospital care, EMS providers play a vital role in the early identification and management of this potentially life-threatening condition.

Who Discovered Reye’s Syndrome?

Reye’s Syndrome was first described by Dr. Ralph Douglas Kenneth Reye, an Australian pathologist, in 1963. He and his colleagues published a landmark paper detailing a series of cases involving encephalopathy and fatty degeneration of the liver in children, following viral illnesses. 

This observation led to the condition being named “Reye’s Syndrome” in his honor.

Dr. Reye’s work highlighted the connection between viral infections, brain and liver damage, and the potential risks associated with certain medications, which eventually led to further research on the syndrome’s association with aspirin use.

Further Reading:

Alexander, M. & Belle, R. (2017) Advanced EMT: A Clinical Reasoning Approach (2nd Ed). Hoboken, New Jersey: Pearson Education

Bledsoe, B. E., Cherry, R. A. & Porter, R. S (2023) Paramedic Care: Principles and Practice (6th Ed) Boston, Massachusetts: Pearson

Brown, C. A. (2022) Walls Manual of Emergency Airway Management (5th Ed). Philadelphia, Pennsylvania: Lippincott, Williams & Wilkins.

Crocker, J. F, & Bagnell, P. C. (1981) Reye's Syndrome: A Clinical Review. Canadian Medical Association Journal 24(4): 375-82, 425. Accessed October 14, 2024

Mistovich, J. J. & Karren, K. J. (2014) Prehospital Emergency Care (11th Ed). Hoboken, New Jersey: Pearson Education

National Institute of Neurological Disorders and Stroke (2019) Reye’s Syndrome. Accessed October 14, 2024

Peate, I. & Sawyer, S (2024) Fundamentals of Applied Pathophysiology for Paramedics. Hoboken, New Jersey:  Wiley Blackwell

Reye, R. D. K., Morgan, G., & Baral, J. (1963) Encephalopathy & Fatty Degeneration of The Viscera: A Disease Entity in Childhood. The Lancet 282(7291): 749–752. Accessed October 14, 2024

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