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Association of late-preterm birth with asthma in young children: practice-based study
Neera K Goyal1, Alexander G Fiks, Scott A Lorch
1MSCE, Children's Hospital of Philadelphia, 3535 Market St, Suite 1029, Philadelphia, PA 19104. lorch@email.chop.edu.
Insights
Late-preterm birth is linked to increased asthma severity in young children. This includes higher rates of persistent asthma, medication use, and respiratory visits, highlighting a significant risk factor for early childhood health.
Area of Science:
- Pediatrics
- Neonatal Medicine
- Respiratory Medicine
Background:
- Asthma is a common chronic respiratory disease in childhood.
- Preterm birth is a known risk factor for adverse health outcomes.
- The impact of late-preterm birth on childhood asthma requires further investigation.
Purpose of the Study:
- To evaluate the association between late-preterm birth and asthma severity in young children.
- To assess the relationship between gestational age and asthma development and health service utilization.
Main Methods:
- Retrospective cohort study using electronic health records (31 practices).
- Included 7925 infants born between 34 to 42 weeks gestation (2007-2008), monitored to 18 months.
- Multivariate logistic/Poisson models analyzed late-preterm (34-36 weeks) and low-normal (37-38 weeks) vs. term (39-42 weeks) gestation.
Main Results:
- 8.3% of infants diagnosed with asthma by 18 months.
- Late-preterm birth associated with increased persistent asthma diagnoses (aOR: 1.68), inhaled corticosteroid use (aOR: 1.66), and acute respiratory visits (IRR: 1.44).
- Low-normal gestation linked to higher asthma diagnoses (aOR: 1.34) and inhaled corticosteroid use (aOR: 1.39).
Conclusions:
- Late-preterm and low-normal gestational ages are potential risk factors for childhood asthma.
- These gestational ages may also increase health service utilization in early childhood.
- Findings suggest closer monitoring for asthma in infants born at these gestations.
Objective:
To evaluate the association of late-preterm birth with asthma severity among young children.
Methods:
A retrospective cohort study was performed with electronic health record data from 31 practices affiliated with an academic medical center. Participants included children born in 2007 at 34 to 42 weeks of gestation and monitored from birth to 18 months. We used multivariate logistic or Poisson models to assess the impact of late-preterm (34-36 weeks) and low-normal (37-38 weeks) compared with term (39-42 weeks) gestation on diagnoses of asthma and persistent asthma, inhaled corticosteroid use, and numbers of acute respiratory visits.
Results:
Our population included 7925 infants (7% late-preterm and 21% low-normal gestation). Overall, 8.3% had been diagnosed with asthma by 18 months. Compared with term gestation, late-preterm gestation was associated with significant increases in persistent asthma diagnoses (adjusted odds ratio [aOR]: 1.68), inhaled corticosteroid use (aOR: 1.66), and numbers of acute respiratory visits (incidence rate ratio: 1.44). Low-normal gestation was associated with increases in asthma diagnoses (aOR: 1.34) and inhaled corticosteroid use (aOR: 1.39).
Conclusion:
Birth at late-preterm and low-normal gestational ages might be an important risk factor for the development of asthma and for increased health service use in early childhood.
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Classification of Asthma
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Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma III: Clinical Manifestations
Asthma-IV: Diagnostic and Management
Clinical Assessment for Asthma:
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