# A 6-month-old infant with bronchiolitis caused by respiratory syncytial virus (RSV) is admitted to the pediatric unit. The infant has increased work of breathing, nasal flaring, and subcostal retractions. Which nursing intervention should be the priority?

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> subject: Child Health

## 문제

A 6-month-old infant with bronchiolitis caused by respiratory syncytial virus (RSV) is admitted to the pediatric unit. The infant has increased work of breathing, nasal flaring, and subcostal retractions. Which nursing intervention should be the priority?

## 보기

1. Position the infant in a semi-Fowler's position to optimize respiratory function **✔ 정답**
2. Administer bronchodilators as prescribed to open the airways
3. Provide chest physiotherapy to mobilize secretions
4. Encourage frequent feeding to maintain nutritional status

**정답: 1**

## 해설

Positioning in semi-Fowler's is the priority to immediately improve oxygenation and reduce work of breathing in an infant with RSV bronchiolitis showing distress. Other options like bronchodilators have limited efficacy, chest physiotherapy may increase fatigue, and frequent feeding risks aspiration.

## 심화 해설

Understanding Bronchiolitis and the Priority Intervention

The infant in this scenario is exhibiting classic signs of moderate to severe respiratory distress secondary to RSV bronchiolitis: increased work of breathing, nasal flaring, and subcostal retractions. The immediate priority is to reduce the work of breathing and improve gas exchange using the least invasive, evidence-based supportive measure. According to the 2022 Italian guidelines on the management of bronchiolitis, the mainstays of treatment are supportive, focusing on respiratory support and fluid management [1]. Positioning the infant to optimize respiratory mechanics is a foundational, non-pharmacological intervention that directly addresses the pathophysiological problem.

Why Positioning is the Priority

Bronchiolitis causes inflammation, edema, and necrosis of the epithelial cells lining the small airways (bronchioles). This leads to airway obstruction, hyperinflation, and atelectasis. The infant's compliant chest wall and horizontal rib orientation already place them at a mechanical disadvantage. The use of accessory muscles, nasal flaring, and subcostal retractions indicates that the infant is expending excessive energy to overcome increased airway resistance. Placing the infant in a semi-Fowler's position (head of the bed elevated approximately 15 to 30 degrees) uses gravity to lower the diaphragm, reducing pressure from the abdominal contents on the thoracic cavity. This simple maneuver increases lung volumes, improves vital capacity, and can immediately decrease the work of breathing, making it the most appropriate and rapid first-line nursing action.

Analysis of Other Options

- Administer bronchodilators as prescribed to open the airways: This is not the priority. The 2022 Italian guidelines clearly state that evidence suggests no benefit from the use of salbutamol (a bronchodilator) in the management of bronchiolitis [1]. The pathophysiology involves airway obstruction from debris and edema, not primarily bronchospasm, which is why bronchodilators are not routinely recommended and should not be a priority intervention.

- Provide chest physiotherapy to mobilize secretions: Chest physiotherapy is not a recommended supportive measure for bronchiolitis in infants who do not have a specific comorbidity like neuromuscular disease. In an infant with already increased work of breathing, this intervention could cause unnecessary stress and further compromise a precarious respiratory status without proven benefit.

- Encourage frequent feeding to maintain nutritional status: While maintaining hydration and nutrition is a critical component of supportive care [1], it is not the immediate priority for an infant in acute respiratory distress. The risk of aspiration is high in a tachypneic infant with increased work of breathing. Forcing oral feeding could worsen respiratory status. The priority is to first stabilize the airway and breathing; nutritional needs can then be addressed, often with small, frequent feedings or temporary intravenous fluids if the respiratory rate is dangerously high.

Clinical Reasoning and Evidence Integration

The clinical presentation of increased work of breathing, nasal flaring, and subcostal retractions signals impending respiratory failure. The nurse must prioritize interventions that provide immediate respiratory support. The 2014 Cochrane review on oxygen therapy for lower respiratory tract infections highlights that the effectiveness of different delivery methods remains uncertain, but the fundamental principle of providing respiratory support is key . Before escalating to supplemental oxygen or other delivery methods, optimizing the patient's own respiratory function through proper positioning is a critical, evidence-supported first step that can prevent further decompensation. This aligns with the guideline-based approach of providing supportive care that minimizes harm and maximizes the infant's physiological reserve [1].References (research sources)

- [1]UPDATE - 2022 Italian guidelines on the management of bronchiolitis in infants.GuidelineManti S, Staiano A, Orfeo L, Midulla F, Marseglia GL, Ghizzi C, Zampogna S, Carnielli VP, Favilli S, Ruggieri M, Perri D, Di Mauro G, Gattinara GC, D'Avino A, Becherucci P, Prete A, Zampino G, Lanari M, Biban P, Manzoni P, Esposito S, Corsello G, Baraldi E. (2023) · DOI: 10.1186/s13052-022-01392-6

## 임상 시나리오

RSV Bronchiolitis: Priority PositioningReducing Work of Breathing in Infants
In infants with RSV bronchiolitis showing nasal flaring and subcostal retractions, the immediate priority is to reduce respiratory effort. Position the infant in a semi-Fowler's position by elevating the head of the bed 15 to 30 degrees. This uses gravity to lower the diaphragm and minimize abdominal pressure on the thoracic cavity, optimizing lung expansion.

Supportive care is the cornerstone of bronchiolitis management. Avoid interventions that lack evidence or increase distress. Bronchodilators and chest physiotherapy are not routinely recommended. Frequent oral feeding should be paused if the respiratory rate exceeds 60 breaths/min due to aspiration risk; consider nasogastric or IV fluids instead.

CautionContinuously monitor oxygen saturation and respiratory status. Suction the nares gently only if secretions are obstructing the airway, as aggressive suctioning can worsen edema and cause trauma.

## 핵심 개념

- **Bronchiolitis** — Acute inflammatory injury of the bronchioles, usually caused by RSV, leading to edema, mucus plugging, and airway obstruction in infants.
- **Semi-Fowler's Position** — A sitting position with the head of the bed elevated 15 to 30 degrees to lower the diaphragm and improve chest expansion.
- **Subcostal Retractions** — Inward movement of the abdomen just below the rib cage during inspiration, indicating severe respiratory distress and increased work of breathing.
- **Respiratory Syncytial Virus (RSV)** — A common, highly contagious virus that causes respiratory tract infections, most notably bronchiolitis and pneumonia in infants.
- **Work of Breathing** — The energy expended to inhale and exhale; increased in conditions with airway resistance or poor lung compliance, signaled by retractions and nasal flaring.

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