Related Experiment Video
Updated: Jul 9, 2026

Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters
Published on: July 12, 2024
Air quality and pediatric asthma-related emergencies
1Division of Allergy/Immunology, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19899, USA.
Background:
Previous studies suggest a relationship between air pollutants, aeroallergens, and asthma exacerbations.
Objective:
To simultaneously examine the role of seasonality, air quality, aeroallergens, and climate on asthma-related pediatric emergency department (ED) visits.
Methods:
A retrospective 4-year study of asthma-related ED visits was conducted.
Results:
September had the highest number of visits (p < 0.01). There were lower temperatures and precipitation (p < 0.01) and higher tree and weed pollen levels (p = 0.05) on days with more visits (p = 0.05), while grass pollen, mold, ozone, NO2, and PM2.5 levels showed no significant differences.
Conclusions:
Asthma-related visits were associated with aeroallergens and climatic factors and not air-quality factors.
Related Concept Videos
Asthma-I: Introduction
Asthma I: Introduction
Asthma-III: Symptoms and Complications
Classification of Asthma
Asthma III: Clinical Manifestations
Asthma: Pathogenesis and Management
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-IV: Diagnostic and Management
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes: