从肺音频谱分析平喘摩按法治疗儿童哮喘急性发作的效果

Analysis of Therapeutic Effect of Asthma-relieving Manipulation for Children with Acute Asthmatic Exacerbation by Lung Sound Spectrum

【目的】采用肺音频谱分析,评价平喘摩按法对儿童哮喘急性发作的疗效。【方法】采集11例儿童哮喘急性发作患者在实施平喘摩按法手法治疗前后的呼吸音,输入电脑导出肺音频谱信号数据,对声音强度(LSI)、平均有效功率(average RMS power)、总有效功率(total RMS power)及频率谱每隔25 Hz的音量大小进行比较。【结果】哮喘急性发作患儿在实施平喘摩按法手法治疗后,呼吸音强度、平均有效功率、总有效功率显著降低,与手法治疗前比较差异有统计学意义(P<0.01)。肺音频谱分析显示:手法治疗后,频率在300 Hz以下音量显著降低,与手法治疗前比较差异有统计学意义(P<0.05);而频率在300 Hz以上手法治疗前后音量大小差异无统计学意义(P>0.05)。【结论】肺音频谱分析可以客观、量化监测哮喘患儿肺通气功能,是一种新的、灵敏的临床检测方法。平喘摩按法治疗儿童哮喘急性发作效果显著。

Objective By using lung sound spectrum analysis, the clinical efficacy of asthma-relieving manipulation, which is a gentle massage therapy mainly on the acupoints, on acute exacerbation of children asthma was evaluated. Methods We collected the lung sound of 11 children with acute asthmatic attack before and after asthma-relieving manipulation, and then input to the computer for obtaining lung sound spectrum signal data. The sound intensity, average respiratory muscle strength （RMS） power, total RMS power and the volume of every 25 Hz frequency spectrum were extracted for comparison. Results After asthma-relieving manipulation, the sound intensity, average RMS power, and total RMS power of the children with acute asthmatic attack were significantly lower than those before the manipulation （P〈0.01）. The results of lung sound spectrum analysis displayed that lung sound volume was significantly lower at frequency band 0-300 Hz after manipulation （P〈0.05 compared with that before the manipulation） . The difference of the lung sound volume was insignificant over frequency band 300 Hz before and after treatment （P〉0.05）. Conclusion Lung sound spectrum analysis can be applied to monitor lung function of asthmatic children objectively and quantitatively, and it is a new sensitive method for clinical detection. Asthma-relieving manipulation shows certain effect on acute exacerbation of children asthma.