Risk factors for recurrent wheezing in infants: a case-control study

Area of Science:

• Pediatric Pulmonology
• Allergy and Immunology
• Environmental Health

Background:

• Recurrent wheezing in infants is a significant clinical concern.
• Identifying predictive factors for recurrent wheezing is crucial for early intervention and asthma prevention.

Purpose of the Study:

• To assess the association between recurrent wheezing and atopy, Asthma Predictive Index (API), environmental risk factors, and total serum IgE levels.
• To identify key predictors for recurrent wheezing in infants.

Main Methods:

• A case-control study involving 113 infants aged 6-24 months.
• Evaluations included allergy testing (inhalant and food antigens), API assessment, and analysis of risk factors like environmental smoke exposure.
• Total serum IgE levels were also measured.

Main Results:

• Antigen sensitivity (OR=12.45), a positive API (OR=5.57), and environmental smoke exposure (OR=2.63) were significant risk factors for recurrent wheezing.
• Elevated eosinophilia and total IgE were more common in the wheezing group but did not remain significant predictors in the final model.
• Secondhand smoke exposure was paradoxically higher in the control group.

Conclusions:

• Atopy, a positive API, and environmental smoke exposure are independently associated with recurrent wheezing in infants.
• These findings support the implementation of preventive strategies for infants at risk of persistent wheezing and developing asthma.