Oscillating Gas Bubbles as the Origin of Bowel Sounds: A Combined Acoustic and Imaging Study

Chia-Jui Liu ； Shih-Che Huang ； Hsing-I Chen

《The Chinese Journal of Physiology》 53卷4期 (2010/08) Pp. 245-253

https://doi.org/10.4077/CJP.2010.AMK055

並列摘要

Bowel sounds have been speculated to stem from the movement of gas or a mixture in the bowel lumen, with gas as the major component. The exact role and the mechanism through which gas participates have not been elucidated. Video images of actively moving bubbles under either real-time ultrasonography (RU, n=4) or videofluoroscopy (VF, n=4) with synchronous sound recording were studied and a total of 24 bubbling bowel sounds (BBS's) were obtained. The physical dimensions and acoustic parameters of bubbles were analyzed. Freely oscillating bubbles were demonstrated clearly in both groups. Bubble radii ranged from 1.5 to 7.2mm and frequencies from 258.3 to 1,078Hz. The bubble frequency correlated inversely with the radius (P＜0.01). The relevant acoustic features and parameters of bubble dynamics further supported the identification of gas bubbles. Although the acoustic features seemed to be of minor clinical significance, increased number of clustering or fixed, repetitive pattern of occurrences might suggest a poorer prognosis. In summary, oscillating gas bubbles are capable of producing BBS's and may play a central role in this newly recognized model of bowel sound genesis. The patterns of BBS's may be of prognostic value in clinical application, underlining the need for further study.

並列關鍵字

bowel sound ； bubble ； bubble frequency ； bubble acoustics ； real-time ultrasonography ； videofluoroscopy

參考文獻

Minnaert, M. On the musical air-bubble and the sound of running water. Phylos. Mag. 16: 235-248, 1933

Al-Masry, W. A.,Ali, E. M.,Aqeel, Y. M.(2005).Determination of bubble characteristics in bubble columns using statistical analysis of acoustic sound measurements.Chem. Eng. Res. Design..83,1196-1207.

Avruch, L.,Cooperberg, P. L.(1985).The ring-down artifact.J. Ultrasound. Med..4,21-28.

Chen, L.,Manasseh, R.(2001).Numerical study of air release from an under water opening (Paper 348).Proceedings of the 4th International Conference on Multiphase Flow.(Proceedings of the 4th International Conference on Multiphase Flow).:

Craine, B. L.,Silpa, M. L.(2003).Use of a computerized GI sound analysis system.Am. J. Gastroenterol..98,944.