鼻腔通気度測定法の検討--オッシレ-ション法による (藤田学園名古屋保健衛生大学医学部耳鼻咽喉科学教室開講10周年記念論文集)

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Nasal resistance of forty normal subjects were studied in terms of respiratory resistance using the forced oscillation method during nose breathing at quiet breathing.In nose breathing, two different nasal attachments were used in this test, one is a nasal mask, the other a nasal adaptor which we devised for this test.The equipment was used Nihon Koden's oscillation unit S8295 and the oscillation frequencies were 3, 5, 7 and 9Hz.The flow and pressure curves were recorded on the recording papers on the visigraph.The resultant vector of impedance includes not only resistance and compliance but also inertance of respiratory on flow. We called these values nasal impedance instead of nasal resistance. This impedance vector which have amount and angle was changed by frequency and characteristics of the attachments. Results in normal subjects were as follows.1) 3Hz, 4.01; 5Hz, 2.78; 7Hz, 3.24 and 9Hz, 2.49cmH2O/L/sec. using the mask2) 3Hz, 3.65; 5Hz, 3.32; 7Hz, 2.88 and 9Hz, 2.87cmH2O/L/sec. using the nasal adaptor.There were wide variations of nasal impedance between the subjects, but the changes were smaller when using the nasal adaptor than using the nasal mask.
耳鼻咽喉科臨床学会の論文