Department of Pediatrics, Tokai University Hachioji Hospital, Hachioji, Tokyo, Japan.
Tokyo Metropolitan Children's Medical Center, Fuchu, Japan.
Pediatr Pulmonol. 2022 Oct;57(10):2320-2326. doi: 10.1002/ppul.26034. Epub 2022 Jun 21.
The reliability of a breath sound analysis using an objective method in infants has been reported.
Breath sounds of infants with respiratory syncytial virus (RSV) acute bronchiolitis were analyzed via a breath sound spectrogram to evaluate their characteristics and examine their relationship with the severity.
We evaluated the inspiratory and expiratory breath sound parameters of 33 infants diagnosed with RSV acute bronchiolitis. The sound powers of inspiration and expiration were evaluated at the acute phase and recovery phase of infection. Furthermore, the relationship between the breath sound parameters and the clinical severity of acute bronchiolitis was examined.
Analyses of the breath sound spectrogram showed that the power of expiration as well as the expiration-to-inspiration sound ratio in the mid-frequency (E/I MF) was increased in the acute phase and decreased during the recovery phase. The E/I MF was inversely correlated with the SpO and positively correlated with the severity score.
In infants with RSV acute bronchiolitis, the sound power of respiration was large at the acute phase, significantly decreasing in the recovery phase. In 61% of participants, nonuniform, granular bands were shown in the low-pitched region of the expiratory spectrogram.
已有研究报道了一种使用客观方法进行呼吸音分析的可靠性。
通过呼吸音频谱图分析呼吸道合胞病毒（RSV）急性细支气管炎患儿的呼吸音，评估其特征，并探讨其与严重程度的关系。
我们评估了 33 例确诊为 RSV 急性细支气管炎的婴儿的吸气和呼气呼吸音参数。在感染的急性期和恢复期评估吸气和呼气的声能。此外，还检查了呼吸音参数与急性细支气管炎临床严重程度之间的关系。
呼吸音频谱图分析显示，在急性期呼气声能以及中频率的呼气相/吸气相比值（E/I MF）增加，而在恢复期下降。E/I MF 与 SpO 呈负相关，与严重程度评分呈正相关。
在 RSV 急性细支气管炎患儿中，呼吸声能在急性期较大，恢复期显著下降。在 61%的参与者中，呼气频谱图的低频区显示出不均匀的、颗粒状的带。
