# A 4-year-old child is diagnosed with scarlet fever. Which nursing intervention should be prioritized during the acute phase of the illness?

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> subject: Infectious Diseases

## 문제

A 4-year-old child is diagnosed with scarlet fever. Which nursing intervention should be prioritized during the acute phase of the illness?

## 보기

1. Encourage the child to gargle with warm salt water every 2 hours
2. Apply cool compresses to reduce the child's fever
3. Administer prescribed antibiotics as ordered and monitor for therapeutic response **✔ 정답**
4. Provide frequent oral care with hydrogen peroxide solution

**정답: 3**

## 해설

Administering prescribed antibiotics is the priority to treat group A Streptococcus and prevent complications like rheumatic fever. Other interventions are supportive.

## 심화 해설

Understanding the Priority in Scarlet Fever Acute Phase

Scarlet fever is a bacterial illness caused by group A Streptococcus pyogenes, the same pathogen responsible for streptococcal pharyngitis. The characteristic sandpaper-like rash, fever, and sore throat result from erythrogenic exotoxins produced by the bacteria. The provided research underscores the critical nature of this infection, highlighting a recent resurgence and the emergence of highly virulent strains like the M1UK lineage, which reinforces the need for prompt and effective management [1]. During the acute phase, the primary goal is to eliminate the causative organism, prevent serious suppurative and non-suppurative complications (such as acute rheumatic fever and post-streptococcal glomerulonephritis), and reduce the period of communicability.

The highest priority intervention is to administer the prescribed antibiotics and monitor for a therapeutic response. The cornerstone of treatment for SS. pyogenespyogenes infections is antibiotic therapy, typically with penicillin or amoxicillin, as confirmed by the antibiotic susceptibility testing protocols (EUCAST) referenced in the study [1]. Initiating antibiotics within 9 days of symptom onset is highly effective in preventing acute rheumatic fever. Monitoring for a therapeutic response—such as a decrease in fever within 24 to 48 hours and overall clinical improvement—is essential to confirm the treatment’s effectiveness and to identify potential treatment failures early, a concern amplified by the detection of virulent clones [1].

Analysis of Other Options

While the other options provide comfort and address symptoms, they do not target the underlying pathophysiology and are therefore lower priorities.

-   Option 1: Gargling with warm salt water is a supportive measure that can soothe a sore throat. However, it is not a priority for a 4-year-old child, who may not be able to gargle effectively or safely, posing an aspiration risk. It does not treat the infection.

-   Option 2: Applying cool compresses is a non-pharmacological method to manage fever. While fever management is important for comfort, it does not address the bacterial cause. Antipyretic administration, if ordered, would be a more effective antipyretic strategy than compresses alone, but neither replaces the critical need for antibiotics.

-   Option 4: Providing oral care with hydrogen peroxide solution is not a standard or recommended practice for scarlet fever. Hydrogen peroxide can be irritating to mucosal tissues and is not an appropriate intervention for a young child with pharyngeal inflammation. Gentle oral care with a soft toothbrush or moist swabs is preferred for comfort, but again, it is a supportive, not a priority, intervention.

The research on the resurgence and characterization of SS. pyogenespyogenes strains, including antibiotic susceptibility testing, directly supports the principle that targeted antibiotic therapy is the definitive and most urgent intervention [1]. The nurse's priority is to safely administer this treatment and vigilantly monitor the child's response to ensure recovery and prevent the cascade of immune-mediated sequelae.References (research sources)

- [1]Characterization of <i>Streptococcus pyogenes</i> Strains from Tonsillopharyngitis and Scarlet Fever Resurgence, 2023-FIRST Detection of M1<sub>UK</sub> in Bulgaria.Research articleKeuleyan E, Todorov T, Donchev D, Kevorkyan A, Vazharova R, Kukov A, Todorov G, Georgieva B, Altankova I, Uzunova Y. (2025) · DOI: 10.3390/microorganisms13010179

## 임상 시나리오

Clinical Management of Scarlet Fever

A 4-year-old child presents with a sandpaper-like rash, fever, and sore throat, diagnosed with scarlet fever. The priority during the acute phase is to administer prescribed antibiotics (typically penicillin or amoxicillin) as ordered. This intervention targets the group A Streptococcus pyogenes pathogen to eradicate the infection, prevent suppurative and non-suppurative complications such as acute rheumatic fever and post-streptococcal glomerulonephritis, and reduce communicability.

Nursing Priorities and Monitoring

- Administer the full course of antibiotics on schedule, emphasizing adherence even if symptoms improve early.

- Monitor for therapeutic response: expect fever reduction within 24 to 48 hours and overall clinical improvement.

- Assess for signs of complications, including new heart murmurs, joint pain, or decreased urine output.

- Implement droplet precautions until 24 hours after antibiotic initiation to limit transmission.

- Provide supportive care such as antipyretics for fever and soft, cool fluids to soothe the throat, but never delay antibiotic therapy.

Family Education

Instruct caregivers to complete the entire antibiotic regimen, keep the child home from school or daycare until afebrile and on antibiotics for at least 24 hours, and return for evaluation if symptoms worsen or new symptoms like chest pain or facial swelling develop.

## 핵심 개념

- **Scarlet Fever** — A bacterial illness caused by group A Streptococcus pyogenes, characterized by a sandpaper-like rash, fever, and sore throat due to erythrogenic exotoxins.
- **Acute Rheumatic Fever** — A serious non-suppurative complication of untreated group A streptococcal infection that can cause permanent damage to heart valves.
- **Group A Streptococcus pyogenes** — The bacterium responsible for scarlet fever and streptococcal pharyngitis, treated primarily with penicillin or amoxicillin.

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