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Published on: May 10, 2024
Recurrent wheezing in the first three years of life: short-term prognosis and risk factors
Umit Murat Sahiner1, Betul Buyuktiryaki, Ozlem Cavkaytar
1Pediatric Allergy and Asthma Department, School of Medicine, Hacettepe University, Ankara, Turkey.
Insights
Recurrent wheezing in young children often persists, with maternal smoking and severe episodes being key risk factors. A negative asthma predictive index (API) indicates a faster recovery from wheezing symptoms.
Area of Science:
- Pediatric Pulmonology
- Allergy and Immunology
- Epidemiology
Background:
- Recurrent wheezing in preschool children presents diagnostic challenges, making it difficult to predict future asthma development.
- Early-life wheezing episodes require careful evaluation to understand their long-term prognosis.
Purpose of the Study:
- To investigate the long-term prognosis of recurrent wheezing in children from the first three years of life.
- To identify significant risk factors associated with the persistence of wheezing symptoms.
Main Methods:
- A cohort of 529 children with recurrent wheezing in early childhood was followed for four years.
- Asthma presence was evaluated, and remission was defined as 12 months without symptoms.
- The stringent asthma predictive index (API) and other risk factors were analyzed for their impact on wheezing duration.
Main Results:
- Only 14.4% of children achieved remission within 36 months.
- A negative API was significantly associated with a shorter duration of wheezing (p = .036).
- Maternal smoking during pregnancy (OR=4.35) and emergency room admissions (OR=1.10) were independent risk factors for persistent wheezing.
Conclusions:
- Persistent symptomatic wheezing is common in children referred for this condition.
- Maternal smoking during pregnancy and wheezing severity are significant predictors of prolonged symptoms.
- A negative API suggests a more favorable prognosis for wheezing resolution.
Objective:
It is difficult to determine if preschool children with recurrent wheezing are suffering from asthma or will suffer from asthma in the future. The aim of this study was to investigate the prognosis and risk factors of recurrent wheezing in children, beginning in the first 3 years of life.
Method:
Children who were referred because of recurrent wheezing episodes during the first 3 years of life were evaluated for the presence of asthma over a 4-year period. A child without any symptoms within the last 12 months was considered to be in remission.
Results:
The study included 529 (male/female: 2.17) children with a median (inter-quartile) age of 0.6 years (0.3-1.0) at symptom onset. The median follow-up and symptom durations were 2.93 years (1.74-4.76) and 4.30 years (2.91-5.97), respectively. Remission/recovery was achieved in 1.7%, 8.0%, and 14.4% of the children within 12, 24, and 36 months, respectively. A negative "stringent asthma predictive index" (API) significantly shortened the time to recovery of wheezing compared to the positive API (p = .036). Maternal smoking during pregnancy (OR = 4.35; 95% CI = 1.29-14.63); p = .018) and the number of emergency room admissions within the first 3 years of life (OR = 1.10; 95% CI = 1.01-1.19); p = .031) were found to be independent risk factors for the persistence of wheezing symptoms.
Conclusion:
Most of the children who were referred with frequent wheezing remain symptomatic 3 years after the initial wheezing episodes. A negative API is related to a shorter wheezing duration. Maternal smoking during pregnancy and the severity of the wheezing episodes appeared to be significant risk factors for the persistence of wheezing symptoms.
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