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Multiple blood flow surges during intermittent pneumatic compression: The origins and their implications
Bitian Wang1, Yawei Wang1, Zhujun Sun1
1Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
Journal of Biomechanics
|September 2, 2022
Summary
Intermittent pneumatic compression (IPC) enhances foot skin blood flow (SBF) through both inflation and deflation. High-frequency IPC significantly boosts SBF by increasing blood flow surges, offering new therapeutic insights.
Area of Science:
- Biomedical Engineering
- Physiology
- Vascular Biology
Background:
- Intermittent pneumatic compression (IPC) therapy is used to improve peripheral blood flow for vascular diseases.
- The mechanism behind multiple blood flow surges observed during IPC remains unclear.
Purpose of the Study:
- To investigate the origins of blood flow surges during IPC using experimental and biomechanical modeling.
- To understand how IPC enhances foot skin blood flow (SBF).
Main Methods:
- Recorded foot SBF and air cuff pressure signals in 13 healthy adults during IPC.
- Utilized lumped parameter modeling and wavelet analysis to study blood flow surges (Peak1, Peak2, Peak3).
Main Results:
- Simulated surges (Peak1, Peak2) closely matched experimental data, indicating IPC enhances SBF via inflation and deflation.
- High-frequency IPC significantly increased time-averaged SBF compared to traditional modes.
- Wavelet analysis suggested Peak3 surges are linked to vascular myogenic activity triggered by pressure changes.
Conclusions:
- IPC enhances foot SBF through both inflation and deflation phases.
- High-frequency IPC is more effective in increasing SBF.
- IPC-induced surges involve vascular regulation mechanisms, providing novel insights into IPC therapy.
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