FREQUENCY-SPECTRA OF NORMAL BREATH SOUNDS IN CHILDHOOD

被引:22
作者
HIDALGO, HA [1 ]
WEGMANN, MJ [1 ]
WARING, WW [1 ]
机构
[1] TULANE UNIV,SCH MED,DEPT PEDIAT,PULM DIS SECT,NEW ORLEANS,LA 70112
关键词
D O I
10.1378/chest.100.4.999
中图分类号
R4 [临床医学];
学科分类号
1002 ; 100602 ;
摘要
Clinicians who auscultate the chest of normal children note that the frequency content of their breath sounds appears to vary with age. Because these changes have not been systematically documented before, we recorded and analyzed inspiratory breath sounds in 35 children (0 to 13 years) and five adults (34 to 43 years). Our objective was to determine if the frequency content of normal breath sounds differed with age. Using a Fast Fourier Transform program, we calculated an average amplitude frequency spectrum from the inspiratory portion of the breath sounds of each subject (n = 10 breaths), and we compared the shape of the AFS and the values of selected frequency parameters. We found that the shape of the AFS of the youngest children differed most from the AFS of adults. Three of four selected frequency parameters (F25, F50, F95) differed significantly between children and adults (p < 0.05), and one parameter (F75) did not (p = 0.11). The F25, F50, and F75 parameters of children (but not F95) were correlated (p < 0.001) with increasing height and age. These results suggest that differences in the frequency content of the normal breath sounds of children and adults contribute to the differences that clinicians detect during clinical auscultation.
引用
收藏
页码:999 / 1002
页数:4
相关论文
共 14 条