# A 5-year-old child with Kawasaki disease is in the acute phase and has been hospitalized for 3 days. The child presents with high fever (102.8°F), bilateral conjunctival injection, strawberry tongue, and polymorphous rash. Which nursing action should be the highest priority at this time?

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## 문제

A 5-year-old child with Kawasaki disease is in the acute phase and has been hospitalized for 3 days. The child presents with high fever (102.8°F), bilateral conjunctival injection, strawberry tongue, and polymorphous rash. Which nursing action should be the highest priority at this time?

## 보기

1. Administer acetaminophen for fever reduction
2. Encourage increased fluid intake to prevent dehydration
3. Monitor for signs of coronary artery complications **✔ 정답**
4. Apply cool compresses to reduce skin irritation

**정답: 3**

## 해설

Monitoring for coronary artery complications is the highest priority because Kawasaki disease can cause life-threatening aneurysms. Other options are supportive but do not address the most critical risk.

## 심화 해설

Understanding the Priority in Acute Phase Kawasaki Disease

For a 5-year-old child in the acute phase of Kawasaki disease, the primary goal of nursing care shifts from general symptom management to the prevention of the disease's most serious complication. While the child presents with a high fever of 102.8°F, conjunctival injection, strawberry tongue, and a polymorphous rash, these are all expected manifestations of the underlying systemic vasculitis.

The highest priority nursing action is to monitor for signs of coronary artery complications. Kawasaki disease is a medium-vessel vasculitis, and its most significant morbidity and mortality stem from cardiac involvement, specifically the development of coronary artery aneurysms. The acute phase, which encompasses the first 10-14 days of illness, is the period of highest risk for inflammation and damage to the coronary artery walls. A systematic review and meta-analysis on global complications, while focused on mpox, reinforces a critical principle in evidence-based care: the systematic identification and prioritization of the most serious, life-threatening adverse outcomes associated with a disease . Applying this principle to Kawasaki disease, coronary artery lesions are the most devastating potential complication, making their early detection through vigilant monitoring the cornerstone of nursing care. This involves continuous cardiac monitoring, assessing for signs of myocarditis (tachycardia, gallop rhythm, chest pain), and preparing the child for serial echocardiograms, which are essential for evaluating coronary artery dilation.

Administering an antipyretic like acetaminophen (Option 1) may provide comfort but does not address the underlying vasculitis or reduce the risk of coronary artery damage. The fever in Kawasaki disease is driven by systemic inflammation and is typically unresponsive to standard antipyretics; definitive treatment involves high-dose intravenous immunoglobulin (IVIG) and aspirin. Similarly, while encouraging fluid intake (Option 2) and applying cool compresses (Option 4) are supportive comfort measures for dehydration and skin irritation, they are secondary to the critical task of identifying a potentially fatal cardiac complication. The Delphi consensus study on establishing standard categories of care highlights the importance of defining and prioritizing interventions based on their impact on long-term outcomes . In this context, monitoring for coronary complications is the intervention with the most significant impact on the child’s long-term health and survival, thus establishing it as the clear nursing priority over supportive measures.

## 임상 시나리오

Clinical Guide: Monitoring for Coronary Artery Complications in Acute Kawasaki Disease

Priority Assessment

- **Cardiac Monitoring:** Initiate continuous cardiac telemetry during the acute febrile phase to detect arrhythmias, ST-segment changes, or signs of myocardial ischemia.

- **Vital Sign Surveillance:** Assess heart rate, blood pressure, and respiratory rate every 4 hours. Tachycardia out of proportion to fever, a gallop rhythm, or new murmurs warrant immediate escalation.

- **Signs of Myocarditis:** Observe for chest pain (in verbal children), lethargy, pallor, or poor perfusion which may indicate decreased cardiac output from myocardial inflammation.

Diagnostic Follow-Up

- **Baseline Echocardiogram:** Ensure a 2D echocardiogram is performed at diagnosis to evaluate coronary artery dimensions, valvular function, and left ventricular contractility.

- **Serial Imaging:** Repeat echocardiograms are typically scheduled at 2 weeks and 6-8 weeks after illness onset to monitor for evolving coronary artery dilation or aneurysm formation.

- **Laboratory Markers:** Monitor serial inflammatory markers (CRP, ESR) and cardiac biomarkers (troponin) if myocardial involvement is suspected.

Nursing Interventions

- **IVIG Administration:** Administer intravenous immunoglobulin (IVIG) as prescribed, typically 2 g/kg as a single infusion over 10-12 hours, to reduce the risk of coronary artery abnormalities.

- **Aspirin Therapy:** Give high-dose aspirin (80-100 mg/kg/day divided every 6 hours) during the acute phase for its anti-inflammatory effect, transitioning to low-dose antiplatelet therapy once the fever subsides.

- **Fluid Balance:** Maintain strict intake and output records. Dehydration from prolonged fever increases the risk of thrombosis, so ensure adequate hydration to support hemodynamic stability.

Patient and Family Education

- **Complication Awareness:** Teach caregivers that the primary danger of Kawasaki disease is to the heart, not the visible rash or fever. Explain that monitoring continues even after discharge.

- **Follow-Up Importance:** Emphasize the necessity of lifelong cardiology follow-up if coronary abnormalities develop, including activity restrictions and lipid monitoring.

- **Signs to Report:** Instruct parents to seek immediate medical attention for chest pain, shortness of breath, or syncope in the weeks following the illness.

## 핵심 개념

- **Kawasaki disease** — An acute, self-limited medium-vessel vasculitis primarily affecting children under 5, characterized by prolonged fever, conjunctival injection, strawberry tongue, rash, and risk of coronary artery aneurysms.
- **Coronary artery aneurysm** — Abnormal dilation of a coronary artery segment, the most serious complication of Kawasaki disease, which can lead to thrombosis, myocardial infarction, or sudden death.
- **Acute phase** — The first 10-14 days of Kawasaki disease marked by high fever and acute inflammation, representing the period of highest risk for developing coronary artery lesions.
- **Strawberry tongue** — A characteristic oral finding in Kawasaki disease and other conditions where the tongue appears red, swollen, and bumpy due to prominent fungiform papillae.
- **Systemic vasculitis** — Inflammation of blood vessel walls throughout the body; in Kawasaki disease, this primarily affects medium-sized arteries, especially the coronary arteries.

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