Asthma exacerbation child vs Bronchiolitis
How to tell Asthma exacerbation child and Bronchiolitis apart when a board question makes them look alike.
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A first-time wheezing illness in an infant younger than 24 months with viral upper-respiratory prodrome is the fastest discriminator for bronchiolitis.
Side by side
Recurrent wheeze in a child with atopy or prior similar episodes that improves after short-acting bronchodilator supports asthma exacerbation.
First wheezing episode in an infant younger than 2 years during viral prodrome with diffuse crackles and poor bronchodilator response suggests bronchiolitis.
Airway hyperreactivity and inflammation cause reversible bronchoconstriction and airflow limitation.
Viral lower-airway infection causes bronchiolar edema and mucus plugging with small-airway obstruction.
Asthma exacerbation may show reduced peak expiratory flow or FEV1 that improves at least 12% after bronchodilator; pulse oximetry often improves after albuterol treatment.
Bronchiolitis is a clinical diagnosis; routine labs are unnecessary, and chest imaging is reserved for severe or atypical cases rather than routine confirmation.
The trap
The common mistake is repeatedly giving bronchodilators and steroids to classic bronchiolitis while delaying supportive respiratory care. The resolving clue is age plus first episode pattern with minimal bronchodilator response.
The repair move
Next best step: provide supportive bronchiolitis care with nasal suctioning, hydration, and supplemental oxygen to keep saturation at or above 90%. Reserve bronchodilator trial for unclear diagnosis; for true asthma exacerbation, give albuterol 2.5 mg nebulized every 20 minutes for 3 doses with early oral dexamethasone 0.6 mg/kg or prednisolone 1 to 2 mg/kg.
Try a free question
CoreA 10-month-old with first-time wheezing after 3 days of rhinorrhea has oxygen saturation 88% and diffuse crackles. What is the next best step in management?
Show answer and explanation
Answer: A. Supportive bronchiolitis care with oxygen, suctioning, and hydration. Classic bronchiolitis in an infant is treated with supportive respiratory and hydration care, with oxygen for hypoxemia.
Why the other choices are tempting
- B. Wrong because inhaled steroids alone do not provide acute bronchiolitis stabilization.
- C. Wrong because repeated bronchodilator use is not standard when response is minimal.
- D. Wrong because routine antibiotics are not indicated for uncomplicated viral bronchiolitis.
- E. Wrong because hypoxemia requires active treatment and monitoring.
Flashcards
Tap a card to flip it.
What age and episode pattern most strongly supports bronchiolitis rather than asthma?
Infant younger than 2 years with first wheezing illness after viral prodrome supports bronchiolitis.
Which response pattern favors pediatric asthma exacerbation?
Clear clinical improvement after short-acting bronchodilator supports asthma.
Quick answers
What is the fastest way to tell Asthma exacerbation child from Bronchiolitis?
A first-time wheezing illness in an infant younger than 24 months with viral upper-respiratory prodrome is the fastest discriminator for bronchiolitis.
What is the key clue for Asthma exacerbation child?
Recurrent wheeze in a child with atopy or prior similar episodes that improves after short-acting bronchodilator supports asthma exacerbation.
What is the key clue for Bronchiolitis?
First wheezing episode in an infant younger than 2 years during viral prodrome with diffuse crackles and poor bronchodilator response suggests bronchiolitis.
What is the common trap with Asthma exacerbation child vs Bronchiolitis?
The common mistake is repeatedly giving bronchodilators and steroids to classic bronchiolitis while delaying supportive respiratory care. The resolving clue is age plus first episode pattern with minimal bronchodilator response.