Abstract
Blood flow oscillations of 0.001–0.2 Hz are called vasomotion whose physiological mechanism has not been understood. This vasomotion can mirror human body conditions and initiate the pathogenesis sequence in some diseases. In the preliminary measurement of blood flow oscillations in radial artery at the wrist, a strong power spectral density (PSD) at ∼0.1 Hz was found, indicating that low frequency flow oscillations play a dominate role in radial pulse pattern. To understand the interaction between vasomotion and cardiac rhythm in radial artery, numerical simulations were carried out. It is found that the natural frequency of the system decreases with the complexity of microvasculature system, and the inlet oscillating velocity interacts with the natural frequency to generate subharmonics. As the natural frequency in the constructed vessel system can be as low as 0.37 Hz, we speculate that the natural frequency of actual microcirculation is much lower, and the mechanism of vasomotion is actually due to the interaction of cardiac rhythm and microvasculature natural frequency.
| Original language | English |
|---|---|
| Title of host publication | Fluid-Structure-Sound Interactions and Control- Proceedings of the 4th Symposium on Fluid-Structure-Sound Interactions and Control, 2019 |
| Editors | Motoaki Kimura, Guoyi Peng, A.D. Lucey, Lixi Huang, Yu Zhou |
| Publisher | Pleiades Publishing |
| Pages | 257-261 |
| Number of pages | 5 |
| ISBN (Print) | 9789811075414 |
| DOIs | |
| Publication status | Published - 2019 |
| Event | 4th Symposium on Fluid-Structure-Sound Interactions and Control, FSSIC 2017 - Tokyo, Japan Duration: 21 Aug 2017 → 24 Aug 2017 |
Publication series
| Name | Lecture Notes in Mechanical Engineering |
|---|---|
| ISSN (Print) | 2195-4356 |
| ISSN (Electronic) | 2195-4364 |
Conference
| Conference | 4th Symposium on Fluid-Structure-Sound Interactions and Control, FSSIC 2017 |
|---|---|
| Country/Territory | Japan |
| City | Tokyo |
| Period | 21/08/17 → 24/08/17 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- FFT
- FSI
- Microvasculature
- Wavelet
ASJC Scopus subject areas
- Automotive Engineering
- Aerospace Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes
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