Pulmonary bronchophonography in early-aged patients with bronchial asthma

Abstract

In this work, use of pulmonary bronchophonography for functional evaluation of respiratory system was analyzed in early-aged patients with bronchial asthma. A computerized acoustic diagnostic complex Pattern-01 was used for this purpose. The breathing pattern was analyzed using amplitude and frequency characteristics of respiratory sound spectrum. The study involved 520 children with asthma aged 1 to 4 yrs (mean age, 2.8 ± 1.1 yrs, 294 males and 226 females) followed-up in the pediatric clinic of Moscow Medical Academy. Fifty healthy children were as controls. We investigated frequency and amplitude spectrum of respiratory sounds in exacerbated and stable asthma. High-frequency acoustic component of work of breathe was significantly different in healthy and in patients with asthma exacerbation. We have selected breathing patterns that could be further applied. Pulmonary bronchophonography allows monitoring lung function and assessing efficacy of treatment in asthma. It is an effective, noninvasive and simple method which is of special importance for detecting functional disorders in early-aged children.

The Importance of Modified Bronchophonography in the Diagnosis of Recurrent Bronchoobstructive Syndrome in Children

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The diagnosis of lung diseases heavily relies on acoustic methods for examining the respiratory system. However, a significant drawback lies in the subjectivity and absence of universally accepted standards for evaluating auscultatory data [1,2].Airway obstruction stands as a crucial clinical characteristic in pediatric respiratory diseases [3,4], diagnosed through the study of lung function. Yet, this examination poses challenges in young children [5].Respiratory acoustics represents a scientific field primarily focused on developing objective acoustic techniques to diagnose lung diseases.

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“…Consequently, efforts have been made to propose new investigation methods that do not require active participation from the patient [7,8]. Among the commonly used methods for assessing external respiratory function are spirometry and peak flow measurement [1,4].The objective analysis of lung acoustics has been facilitated by the advent of computerized techniques for recording and processing respiratory sounds [9]. This method has demonstrated notable advantages over traditional auscultation, significantly enhancing the diagnostic capabilities for various lung diseases, notably bronchoobstructive syndrome in pediatric patients [10,11].Bronchophonography, a technique employed to assess respiratory patterns by graphically representing phonorespirograms derived from respiratory noise spectrograms, holds promise in this domain [4].…”

“…Airway obstruction stands as a crucial clinical characteristic in pediatric respiratory diseases [3,4], diagnosed through the study of lung function. Yet, this examination poses challenges in young children [5].…”

“…The objective analysis of lung acoustics has been facilitated by the advent of computerized techniques for recording and processing respiratory sounds [9]. This method has demonstrated notable advantages over traditional auscultation, significantly enhancing the diagnostic capabilities for various lung diseases, notably bronchoobstructive syndrome in pediatric patients [10,11].…”