930119 Lung sound analysis of upper airwayobstruction.SHI Yi(施毅),et al.Dept RespirMed,General Hosp,Nanjing Command,210002.Chin J Tuberc & Respir Dis 1992;15(4):228-230.The frequency spectrum of stridor was stud-...930119 Lung sound analysis of upper airwayobstruction.SHI Yi(施毅),et al.Dept RespirMed,General Hosp,Nanjing Command,210002.Chin J Tuberc & Respir Dis 1992;15(4):228-230.The frequency spectrum of stridor was stud-ied by the computer program in the patientswith upper airway obstruction.The resultsshowed that the peak frequency of respiratorysound increased significantly,the frequencyspectrum got wider and moved to the high fre-quency area above 200Hz and the E ratio wassmaller than 1.These changes were more ap-展开更多
文摘930119 Lung sound analysis of upper airwayobstruction.SHI Yi(施毅),et al.Dept RespirMed,General Hosp,Nanjing Command,210002.Chin J Tuberc & Respir Dis 1992;15(4):228-230.The frequency spectrum of stridor was stud-ied by the computer program in the patientswith upper airway obstruction.The resultsshowed that the peak frequency of respiratorysound increased significantly,the frequencyspectrum got wider and moved to the high fre-quency area above 200Hz and the E ratio wassmaller than 1.These changes were more ap-