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Relationship Between Lung Sound Power and Factors Related to the Onset of Asthma in Three-year-old Children
Masanori Ishimaru, Hiroyuki Mochizuki1, Takashi Sakama
1Department of Pediatrics, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan. mochihi@tokai.ac.jp.
Insights
Early detection of childhood asthma is crucial. Lung sound analysis in three-year-olds revealed distinct sound power characteristics in children with a history of wheezing or asthma, aiding early diagnosis.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Biomedical Engineering
Background:
- Childhood asthma can progress to adult chronic obstructive pulmonary disease.
- Early diagnosis and intervention in early childhood are essential for managing asthma.
- Identifying characteristic lung sounds in young children can facilitate early detection.
Purpose of the Study:
- To investigate lung sound power characteristics in three-year-old children.
- To determine if lung sound parameters differ in children with a history of wheezing or asthma.
- To explore correlations between lung sound power and respiratory health indicators.
Main Methods:
- A retrospective study analyzed lung sound power parameters in three-year-olds.
- The ATS-DLD questionnaire assessed history of wheezing, asthma diagnosis, and allergies.
- Lung sounds were measured, and inspiratory and expiratory sound power characteristics were examined.
Main Results:
- Correlations were found between lung sound power parameters in low- and middle-frequency ranges.
- Children with a history of wheezing or asthma showed increased inspiratory and expiratory sound power.
- Lung sound power parameters correlated with the inspiratory sound spectrum.
Conclusions:
- Lung sound power measurements can identify characteristic respiratory sounds in three-year-olds.
- Distinct lung sound patterns were observed in children with a history of wheezing or diagnosed asthma.
- These findings support the use of lung sound analysis for early asthma detection in young children.
Objective:
Childhood asthma can lead to chronic obstructive pulmonary disease in adults, thus necessitating an early diagnosis and timely intervention from early childhood.
Methods:
A retrospective study was conducted on parameters related to lung sound power in three-year-old healthy children. All cases were surveyed using the ATS-DLD questionnaire, which mainly covered items related to the history of wheezing, diagnosis of asthma/asthmatic bronchitis, and history of allergies, and then lung sounds were measured. From these data, the characteristics of inspiratory and expiratory sound power at this age were examined.
Results:
There were correlations between the parameters related to lung sound power at the low- and middle-range frequencies. In addition, children with a history of wheezing or diagnosed with asthma/asthmatic bronchitis showed an increase in the power of inspiratory and expiratory sounds and the power ratio of inspiratory and expiratory sounds compared with children without such histories. Furthermore, the parameters of lung sound power correlated with those of the inspiratory sound spectrum.
Conclusions:
Measurements of the power of inspiratory and expiratory sounds confirmed that three-year-old children with a history of wheezing or diagnosed asthma/asthmatic bronchitis had characteristic lung sounds even when healthy.
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