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Objective evaluation of wheezing in normal infants
Yoshifumi Murayama1, Hiromi Shioya2, Hiromi Tadaki3
1Department of Pediatrics, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Summary
Wheezing was detected in a small number of healthy infants using a breath sound analyzer. Infants with audible wheezing may be at higher risk for recurrent wheezing or asthma.
Area of Science:
- Pediatrics
- Respiratory Medicine
- Diagnostic Technology
Background:
- Wheezing is a common respiratory symptom in infants.
- Accurate detection of wheezing is crucial for diagnosis and management.
- Breath sound analysis offers a potential tool for objective wheezing assessment.
Purpose of the Study:
- To evaluate the frequency of wheezing in healthy infants.
- To assess the utility of a breath sound analyzer in detecting wheezing.
- To explore the characteristics of wheezing in relation to acute respiratory infection (ARI).
Main Methods:
- A total of 443 infants (3-24 months) were enrolled.
- Breath sounds were analyzed using a sound spectrogram and various acoustic parameters (F99, slope, A3/AT, B4/AT, RPF50, RPF75).
- Audible wheezing and faint wheezing (FW) were assessed via auscultation and spectrogram analysis.
Main Results:
- 398 infants were analyzed; 283 healthy, 115 with ARI.
- No infants had audible wheezing on auscultation.
- Faint wheezing (FW) was detected in 1.1% of healthy infants and 8.7% of infants with ARI; no significant differences in breath sound parameters were observed between infants with and without FW.
Conclusions:
- Breath sound analysis identified wheezing and FW in a limited number of healthy infants.
- The presence of audible wheezing in daily practice may indicate a risk for developing recurrent wheezing or asthma.
- Breath sound analysis shows potential for objective assessment of infant respiratory sounds.
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