Bronchiolitis in young infants: is it a risk factor for recurrent wheezing in childhood?

Area of Science:

• Pediatric respiratory health
• Infant respiratory infections
• Childhood wheezing disorders

Background:

• Acute bronchiolitis in infancy is a known risk factor for recurrent childhood wheezing.
• This study investigates the prevalence, clinical features, and risk factors associated with recurrent and persistent wheezing in children with a history of infant bronchiolitis.

Purpose of the Study:

• To assess the prevalence and clinical manifestations of recurrent wheezing in children hospitalized for acute bronchiolitis as infants.
• To identify risk factors for recurrent wheezing during the first 3 years of life and persistent wheezing beyond this age.

Main Methods:

• A retrospective study comparing 150 children hospitalized for bronchiolitis before 6 months of age (study group) with 66 age- and sex-matched controls without a history of bronchiolitis.
• Data collected until age 6 included wheezing episodes, age of onset, treatments, and severity of initial bronchiolitis, by reviewing pediatric ambulatory records.

Main Results:

• Recurrent wheezing episodes before age 3 occurred in 58% of the study group versus 27% of the control group (P=0.001).
• Children with a history of infant bronchiolitis experienced earlier onset of recurrent wheezing, more frequent episodes, and required more treatments, including bronchodilators and systemic steroids.

Conclusions:

• Hospitalization for acute bronchiolitis in the first six months of life is an independent predictor of recurrent wheezing in early childhood.
• Early infant bronchiolitis significantly impacts the long-term respiratory health trajectory, increasing the risk and burden of recurrent wheezing episodes.