Mouth flow estimation during cough sound measurements.
Goldsmith-WT; Reynolds-JS; McKinney-WG; Friend-KA; Stolarik-BM; Frazer-DG
Proceedings of the 19th Southern Biomedical Engineering Conference, Center for Biomedical Engineering, Virginia Tech, Blacksburg, Virginia, April 14-16, 2000. Arlington, VA: National Science Foundation, 2000 Apr; :78
Physicians have used the presence and characteristics of cough as a diagnostic tool for many years. Researchers have shown that cough sound analysis can assist in the diagnosis of respiratory disease . Important considerations such as cough intensity and duration may affect the sounds produced by the lungs. To reliably classify cough sounds, these considerations must be addressed. Measurement of cough air flow simultaneously with sound has several advantages. Indices can be derived which estimate the forcefulness of a cough. This information is useful in determining the repeatability of cough sound measurements. Additionally, flow indices could augment existing diagnostic algorithms to improve their ability to distinguish subjects with different types of pulmonary disease. Our challenge was to record the cough air flow accurately without affecting the fidelity of the sound measurement made at the mouth. A system was designed for this task. Hardware was developed to record sound with minimal interference. Reconstruction software was written to estimate flow at the mouth, based on a flow measurement recorded where it would not alter the sound.
Sound-analyzers; Sound; Physicians; Respiratory-system-disorders; Lung-disorders; Air-flow; Pulmonary-system-disorders
E&CTB, HELD, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505
Abstract; Conference/Symposia Proceedings
Proceedings of the 19th Southern Biomedical Engineering Conference, Center for Biomedical Engineering, Virginia Tech, Blacksburg, Virginia, April 14-16, 2000