A nurse is caring for a 9-year-old child diagnosed with Reye's syndrome. Which nursing intervention should be the priority?

Monitoring neurological status and ICP is the priority due to the risk of cerebral edema in Reye's syndrome. Other interventions are contraindicated or less critical.

Understanding the Priority in Reye's Syndrome

Reye's syndrome is an acute, life-threatening condition that primarily affects children and is characterized by encephalopathy and fatty degeneration of the liver. The classic clinical course involves a viral illness (such as influenza or varicella) treated with aspirin, followed by the sudden onset of severe vomiting, lethargy, and rapid neurological deterioration. The pathophysiological cascade leads to cerebral edema and elevated intracranial pressure (ICP), which is the direct cause of mortality and long-term neurological damage in these patients. Therefore, the primary goal of nursing and medical management is to prevent irreversible brain injury from herniation.

Analysis of the Correct Answer (Option 3)

The priority intervention is to monitor neurological status and intracranial pressure. The provided evidence strongly supports this. In a foundational study on the topic, Kindt ^[3] explicitly states that "continuous intracranial pressure monitoring proved to be a valuable adjunct to therapy for Reye syndrome." This is because clinical signs of deterioration, such as pupillary changes or posturing, are late findings. As Trauner et al. ^[2] explain, with continuous intraventricular monitoring, "elevations in intracranial pressure can be treated promptly and before the patient shows clinical signs of deterioration." The nurse's role at the bedside involves performing serial neurological assessments (e.g., Glasgow Coma Scale, pupillary reactivity, motor responses) to detect these subtle changes early and assisting with the maintenance and interpretation of invasive ICP monitoring devices, which are standard of care for patients in stage 3 or 4 coma ^[2]. The Shaywitz et al. study ^[1] corroborates this, noting that in their cohort, the majority of children were in stage 3 coma and 24 out of 29 had their ICP monitored via an intraventricular catheter, underscoring that this intervention is central to the management protocol.

Analysis of Incorrect Answers

Option 1: Administer aspirin for fever reduction. This is contraindicated. The strong epidemiological link between aspirin use during a viral illness and the development of Reye's syndrome led to public health warnings against its use in children. Administering aspirin would not address the underlying cerebral edema and could potentially exacerbate the pathophysiology. The management focus is on controlling ICP, not treating fever with a dangerous agent.

Option 2: Encourage oral fluid intake to prevent dehydration. This is inappropriate and dangerous for a patient with suspected Reye's syndrome who is in a comatose or rapidly deteriorating neurological state. Due to altered consciousness and the risk of vomiting, oral intake is contraindicated to prevent aspiration. Fluid management is critical but is achieved through carefully controlled intravenous fluids. The Mickell et al. study ^[4] describes using a continuous intravenous glycerol infusion "modified to substitute for maintenance fluids," highlighting that fluid and osmolar therapy is a precise, parenteral medical intervention, not an oral one.

Option 4: Provide a high-protein diet to support liver function. This is incorrect. While hepatic dysfunction with hyperammonemia is a hallmark of Reye's syndrome, the immediate life-threat is the cerebral edema. In the acute, comatose phase, the patient is NPO (nothing by mouth). Furthermore, a high-protein diet would be detrimental because protein metabolism produces ammonia, which the damaged liver cannot effectively clear. The Shaywitz et al. study ^[1] identifies severe disease by blood ammonia concentrations >500 µg/100 ml, a condition that would be worsened by a high protein load. The priority is to support the brain, and nutritional support, if needed, would be provided parenterally and formulated to minimize ammonia production.