自励振動によるコロトコフ音の発生条件と血管コンプライアンスとの関係 : 循環モデルによる検討

概要

論文の詳細を見る
A number of papers have been reported describing the mechanism of Korotkoff Sound generation. The phenomenon of self-excited oscillation in a collapsible tube is one of the influential theories among them. This oscillation is closely related to the compliance and cross sectional area of the tube and the flow in the tube. In this study, using a circulatory simulator, we have compared the oscillation with Korotkoff Sound generation. Three latex tubes with different compliances were used to find the relationship between Korotkoff Sounds and arterial compliance. The compliance of each of these tubes is different in value, but nearly similar to the carotid arteries of the cow. As a result, each latex tube indicated different changes in power spectral density between 100-300 Hz in every number of Korotkoff Sounds. Furthermore, the number of Korotkoff Sounds flowing in the tube generating self-excited oscillation agreed with the number of frequency components included between 100-300 Hz. On the basis of these results, the classification of latex tubes of different compliances could be distinguished using changes in power spectral density of the Korotkoff Sounds. In the same manner, biological arterial compliance could also be measured. Therefore, we came to the conclusion from our results that Korotkoff Sounds are strongly influenced by compliance. In addition, the method might be applied for the non-invasive measurement of arterial compliance.
社団法人日本生体医工学会の論文
2003-03-10

自励振動によるコロトコフ音の発生条件と血管コンプライアンスとの関係 : 循環モデルによる検討

スポンサーリンク

概要

著者

関連論文

スポンサーリンク