# A nurse is caring for a 6-year-old child diagnosed with impetigo. Which nursing intervention should be the priority?

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> subject: Child Health

## 문제

A nurse is caring for a 6-year-old child diagnosed with impetigo. Which nursing intervention should be the priority?

## 보기

1. Apply warm compresses to the affected areas three times daily
2. Encourage the child to scratch gently to remove crusts
3. Keep the child's fingernails long to prevent further skin damage
4. Implement strict isolation precautions and teach proper hand hygiene **✔ 정답**

**정답: 4**

## 해설

Impetigo is highly contagious, so strict isolation and hand hygiene are the priority to prevent spread. Other options (warm compresses, scratching, long nails) are incorrect as they may worsen infection or transmission.

## 심화 해설

Understanding Impetigo Transmission and Infection Control

Impetigo is a highly contagious, superficial bacterial skin infection most commonly caused by Staphylococcus aureus or Group A Streptococcus (GAS, Streptococcus pyogenes). The provided research underscores that these infections proliferate in conditions of overcrowding and poor hygiene, with intrafamilial transmission being a significant concern [1][2]. The bacteria typically enter through breaks in the skin, such as cuts, insect bites, or scratches, leading to the formation of the characteristic honey-colored crusts.

The pathophysiological basis for prioritizing infection control lies in the virulence of the causative organisms. GAS, for instance, is a highly virulent gram-positive bacterium that produces enzymes and toxins, enabling it to cause not only localized skin infections but also severe invasive disease and immunologically mediated sequelae like post-streptococcal glomerulonephritis [3]. Similarly, specific strains of Staphylococcus aureus can produce exfoliative toxins and Panton-Valentine leukocidin, leading to recurrent and difficult-to-eradicate infections within families [2]. This high transmissibility and potential for serious complications make breaking the chain of infection the absolute priority.

Analysis of Nursing Interventions

*   Option 1 (Incorrect): Applying warm compresses can be a supportive measure to gently soak and remove crusts, but it is not the priority. The mechanical action of a compress does not address the primary risk of spreading the infection to the child or to others.

*   Option 2 (Incorrect): Encouraging scratching, even gently, is contraindicated. Scratching disrupts the skin barrier, creating new portals of entry for bacteria. This action promotes autoinoculation, spreading the infection to other parts of the child's body, and increases the risk of secondary infection.

*   Option 3 (Incorrect): Keeping fingernails long is dangerous. Long fingernails harbor bacteria and increase the risk of skin damage from scratching, which directly facilitates the spread of impetigo. The correct intervention is to keep the child's fingernails short and clean.

*   Option 4 (Correct): Implementing strict contact precautions and teaching proper hand hygiene is the priority intervention. Impetigo is spread through direct contact with the lesions or contaminated items. A study on recurrent staphylococcal skin infections demonstrated that intrafamilial transmission is strongly suspected and that decolonization procedures are often challenging [2]. Furthermore, research in conflict settings confirms that unhygienic conditions are a primary determinant for the proliferation of these highly contagious infections [1]. Therefore, isolating the infectious drainage and rigorously practicing hand hygiene are the most effective immediate measures to prevent transmission to other children, family members, and healthcare staff. This directly addresses the "highly contagious" nature of the disease described in the evidence [1][3].References (research sources)

- [1]A cross-sectional study of the burden and risk factors of impetigo and scabies among children during conflict in the middle area of the Gaza strip.Research articleHassan ASM, Barakat AHH, Abudayya DMH, Abulkhair LMS, Abu Amra MAARS, Abdullateif NNE, Owais TA, Sabboh M, Suliman J, Warasna HJM, Awad MYH, Abu Serriya RAA. (2026) · DOI: 10.1038/s41598-026-38441-7

- [2]Skin Infections Caused by Panton-Valentine Leukocidin and Methicillin-Susceptible Staphylococcus aureus in Child, Japan.Research articleShoji K, Yoshida K, Takenouchi M, Hisatsune J, Kutsuno S, Arai C, Masuda K, Sugai M, Ishikawa T, Kawai T, Uda K, Miyairi I. (2025) · DOI: 10.3201/eid3106.241955

- [3]Invasive group A Streptococcus infection (Streptococcus pyogenes): Current situation in Spain.Research articleMartín-Delgado MC, De Lucas Ramos P, García-Botella A, Cantón R, García-Lledó A, Hernández-Sampelayo T, Gómez-Pavón J, González Del Castillo J, Martín Sánchez FJ, Martínez-Sellés M, Molero García JM, Moreno Guillén S, Rodríguez-Artalejo FJ, Ruiz-Galiana J, Burillo A, Muñoz P, Calvo Rey C, Catalán-González M, Cendejas-Bueno E, Halperin-Benito V, Recio R, Viñuela-Benítez C, Bouza E. (2024) · DOI: 10.37201/req/067.2024

## 임상 시나리오

Clinical Infection Control Guide: Pediatric Impetigo

Impetigo is a highly contagious superficial bacterial skin infection. The immediate priority upon diagnosis is implementing strict infection control measures to prevent transmission to other patients, family members, and healthcare staff.

**Priority Nursing Action:** Initiate Contact Precautions immediately. This includes placing the child in a private room if possible, consistent use of gloves and gowns for all direct contact, and dedicated patient-care equipment.

Key Interventions

- **Hand Hygiene:** Educate the child and family on meticulous hand washing with soap and water or alcohol-based hand rub, especially after touching lesions or contaminated items.

- **Nail Care:** Keep the child's fingernails short and clean to minimize bacterial reservoirs and prevent excoriation from scratching, which leads to autoinoculation and spread.

- **Lesion Management:** Instruct against touching or scratching lesions. Crusts may be gently removed after softening with warm compresses or antibacterial soap soaks, but this is secondary to preventing transmission.

- **Environmental Control:** Ensure daily changing and laundering of linens, towels, and clothing in hot water. Disinfect shared surfaces and toys.

Clinical Rationale

Causative organisms like *Staphylococcus aureus* and Group A Streptococcus (GAS) are highly virulent and spread easily through direct contact or fomites in settings of close contact and poor hygiene. Breaking the chain of infection prevents intrafamilial spread and potential post-streptococcal complications like glomerulonephritis.

**Patient Education Focus:** Emphasize that the child is contagious until 24-48 hours after the initiation of effective antibiotic therapy and that lesions should be covered with loose clothing or a bandage to reduce the risk of transmission.

## 핵심 개념

- **Impetigo** — A highly contagious superficial bacterial skin infection, commonly caused by Staphylococcus aureus or Group A Streptococcus, characterized by honey-colored crusts.
- **Contact Precautions** — Infection control measures used to prevent transmission of infectious agents spread by direct or indirect contact with the patient or the patient's environment.
- **Autoinoculation** — The process by which an infection is spread from one part of the body to another, often via scratching or touching a lesion.
- **Group A Streptococcus (GAS)** — A gram-positive bacterium that can cause impetigo and is associated with post-streptococcal complications like glomerulonephritis.

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