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Difficulty: MediumPediatric Respiratory Disorders

A 5-month-old girl, born at 34 weeks of gestation, is brought to the emergency department in mid-winter by her parents due to a worsening cough and rapid breathing for the past 48 hours. Her symptoms began four days ago with a runny nose and a low-grade fever. The parents report she has been too tired to feed and has had only one wet diaper since yesterday evening.

On physical examination, her temperature is 37.9°C (100.2°F), heart rate is 170/min, respiratory rate is 72/min, and oxygen saturation is 86% on room air. The infant appears lethargic and is grunting. There is significant nasal flaring, as well as marked subcostal and intercostal retractions. Auscultation of the lungs reveals diffuse coarse crackles and prominent expiratory wheezing bilaterally.

Which of the following interventions are appropriate in the immediate management of this patient? (Select all that apply)

  1. Supplemental oxygen administrationAnswer
  2. Intravenous fluid administrationAnswer
  3. C
    Nebulized albuterol therapy
  4. D
    Oral dexamethasone administration
  5. E
    Intravenous ceftriaxone therapy

Answer

Supplemental oxygen administration and Intravenous fluid administration are the correct immediate management steps.
The correct answers highlight the purely supportive approach required for severe viral bronchiolitis. The infant is experiencing respiratory distress with hypoxia (SpO2 86%), which demands immediate supplemental oxygen therapy. Additionally, her extreme tachypnea (respiratory rate of 72/min) precludes safe oral feeding due to aspiration risk, and her decreased urine output indicates dehydration. Therefore, intravenous fluid administration is the safest and most effective way to restore hydration.

Step-by-Step Solution

1
Analyze the patient's clinical presentation and vital signs.
A 5-month-old ex-premature infant presenting in winter with a viral prodrome, severe tachypnea, hypoxia, wheezing, and crackles is diagnosed with severe viral bronchiolitis.
Establishing the correct diagnosis prevents the inappropriate use of therapies meant for asthma or croup.
2
Evaluate the need for respiratory support.
The infant's oxygen saturation is 86% on room air, which necessitates supplemental oxygen.
Hypoxia in bronchiolitis must be rapidly corrected to prevent respiratory failure.
3
Assess the hydration status and feeding safety.
The patient is dehydrated (only one wet diaper) and extremely tachypneic (RR 72/min), making oral feeding dangerous. Intravenous fluids are indicated.
Tachypnea over 60-70 breaths per minute significantly increases the risk of pulmonary aspiration during oral feeding.

Key Concept

The cornerstone of management for acute severe viral bronchiolitis is supportive care, specifically focusing on maintaining adequate oxygenation and hydration, while avoiding ineffective medications like bronchodilators and corticosteroids.
Estimated Time:1m 30s
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Pediatric Respiratory Disorders

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