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Updated: Jun 16, 2026

Asthma Detection Research Based on Voice Signal Processing and Machine Learning
Published on: July 22, 2025
Detection and home management of worsening asthma symptoms
Jane Garbutt1, Gabriellle Highstein, Kyle A Nelson
1Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri 63110, USA. jgarbutt@dom.wustl.edu
Insights
Parents often delay asthma exacerbation treatment, waiting for severe symptoms. Early recognition of warning signs and timely intervention, including appropriate medication use, are crucial for effective asthma management in children.
Area of Science:
- Pediatrics
- Pulmonology
- Public Health
Background:
- Asthma guidelines advocate for prompt home treatment of exacerbations.
- However, current home-based asthma management is frequently delayed and suboptimal.
Purpose of the Study:
- To identify early symptoms and signs of asthma exacerbations recognized by parents.
- To understand the timing and methods parents use to intensify asthma treatment for their children.
Main Methods:
- Telephone questionnaires were administered to parents of children aged 2-12 years who experienced asthma exacerbations requiring urgent care within the past year.
- Data collection focused on parental observation of antecedent symptoms and treatment adjustments.
Main Results:
- Parents reported a median of 3 antecedent symptoms/signs per child, including respiratory (79%), allergy/cold (43%), and behavioral changes (24%).
- Treatment intensification often occurred with cough (55%) and shortness of breath (54%), primarily involving albuterol (92%).
- Oral corticosteroids were infrequently used (17%).
Conclusions:
- Parents can identify antecedent symptoms of asthma exacerbations but often delay treatment intensification until severe respiratory signs appear.
- The infrequent use of oral corticosteroids highlights a gap in timely and appropriate home treatment.
- Interventions are needed to enhance parental and child recognition of worsening asthma symptoms and promote prompt, effective treatment initiation.
Background:
Asthma guidelines recommend early home treatment of exacerbations. However, home treatment is often suboptimal and delayed.
Objectives:
To describe antecedent symptoms and signs of asthma exacerbations noticed by parents and to learn when and how parents intensify asthma treatment.
Methods:
Parents of children 2 to 12 years old with asthma exacerbations that required urgent care in the past 12 months completed telephone questionnaires. Where multiple responses were possible, percentages may sum to more than 100%.
Results:
One hundred one parents were enrolled and interviewed; 94% were the children's mothers. Seventy percent of the children were black, and 64% had Medicaid insurance. Parents reported multiple antecedent symptoms and signs (median number per child, 3; range, 1-6), including respiratory symptoms (79%), allergy or cold symptoms (43%), behavioral changes (24%), and other nonspecific symptoms (29%). Twenty-three parents reported late respiratory symptoms, such as gasping for breath and using accessory muscles to breath, as the earliest antecedent signs. Treatment was most often intensified when the parent noticed cough (55%), shortness of breath (54%), and wheeze (25%) and included adding albuterol (92%), an oral corticosteroid (17%), an inhaled corticosteroid (8%), or other nonasthma medications (16%).
Conclusions:
Although parents described antecedent symptoms and signs of impending asthma exacerbations that they consistently noticed in their children, many waited for lower respiratory signs to be present before intensifying treatment. Oral corticosteroids were used infrequently. Interventions to improve the ability of parents and children to accurately recognize worsening symptoms and initiate timely, effective treatment are needed.
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