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Difficulty: Very hardPediatric Respiratory Disorders

A 1010-month-old girl is admitted to the pediatric intensive care unit due to rapidly worsening work of breathing. She was born prematurely at 3232 weeks gestation and is fully immunized according to the standard schedule. Her current illness began 33 days ago with nasal congestion and a low-grade temperature. The patient's father has severe persistent asthma, and she has a history of mild atopic dermatitis. Vital signs show a temperature of 38.1∘C38.1^\circ\text{C} (100.6∘F100.6^\circ\text{F}), heart rate of 175175/min, and respiratory rate of 6868/min. Oxygen saturation is 87%87\% on ambient air. Physical examination reveals an exhausted infant with marked suprasternal retractions, head bobbing, and diffuse bilateral expiratory wheezing mixed with coarse crackles. A chest radiograph demonstrates hyperinflation, flattened hemidiaphragms, and patchy atelectasis. Based on current pediatric guidelines, which of the following interventions are indicated in the immediate management of this patient? (Select all that apply)

  1. Application of heated humidified high-flow nasal cannulaAnswer
  2. Administration of isotonic intravenous fluidsAnswer
  3. Frequent clearance of upper airway secretionsAnswer
  4. D
    Trial of aerosolized albuterol sulfate
  5. E
    Initiation of systemic glucocorticoids
  6. F
    Empiric intravenous ceftriaxone therapy

Answer

The correct interventions are the application of a heated humidified high-flow nasal cannula, administration of isotonic intravenous fluids, and frequent clearance of upper airway secretions.
The patient is presenting with classic acute severe viral bronchiolitis, with her history of prematurity placing her at high risk for decompensation. According to American Academy of Pediatrics (AAP) guidelines, the management of bronchiolitis is purely supportive. Because the infant is hypoxic (oxygen saturation 87%) and severely tachypneic (respiratory rate 68/min) with impending fatigue, supportive care must aggressively target her physiologic deficits. This includes respiratory support via high-flow nasal cannula to correct hypoxemia and provide mild positive end-expiratory pressure, intravenous hydration to maintain euvolemia since oral feeding is unsafe at this respiratory rate, and frequent nasopharyngeal suctioning to relieve upper airway obstruction caused by profuse viral secretions.

Step-by-Step Solution

1
Analyze the patient's demographics, history, and clinical presentation.
A 10-month-old former premature infant presents with a viral prodrome followed by severe tachypnea, hypoxia, retractions, wheezing, and crackles.
To establish the most likely primary diagnosis.
2
Differentiate between viral bronchiolitis and early-onset pediatric asthma.
Despite the father's asthma and the infant's atopic dermatitis, the first episode of wheezing in an infant under 2 years old during a viral illness is diagnosed clinically as acute bronchiolitis.
To avoid inappropriate medical therapies directed at bronchospasm.
3
Determine the appropriate evidence-based interventions for severe acute bronchiolitis.
Management is exclusively supportive, focusing on oxygenation (high-flow nasal cannula), hydration (intravenous fluids), and airway clearance (nasopharyngeal suctioning).
To provide standard-of-care treatment while avoiding pharmaceutical therapies that lack proven benefit.

Key Concept

The management of acute viral bronchiolitis in infants is strictly supportive (oxygenation, hydration, and airway suctioning); bronchodilators and systemic corticosteroids are not indicated, even in patients with a strong family history of asthma.
Estimated Time:1m 30s
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Pediatric Respiratory Disorders

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