| Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height |
| |
| 作者姓名： | CRABTREE Vincent P. AZORIN-PERIS Vincent ECHIADIS Angelos SMITH Peter R. |
| |
| 作者单位： | Department of Electronic and Electrical Engineering Loughborough University Leicestershire LE11 3TU UK，Department of Electronic and Electrical Engineering Loughborough University Leicestershire LE11 3TU UK，Department of Electronic and Electrical Engineering Loughborough University Leicestershire LE11 3TU UK，Department of Electronic and Electrical Engineering Loughborough University Leicestershire LE11 3TU UK |
| |
| 基金项目： | ACKN0WLEDGEMENT The authors sincerely acknowledge the kind help of University of Shanghai for Science and Technology in sponsoring the academic visitors to the UK, and thank the Photonics Engineering and Health Technology Research Group at Loughborough University, UK for conducting lab trial study and the Dialog Devices Ltd. for providing the equipments. |
| |
| 摘 要： | Objective: To study the regulation of blood pulse volume via photoplethysmography (PPG) signal detected from toe, while the lower limb is passively raised in different height positions. Methods: Use a modified non-invasive PPG technique to detect the blood pulse signal on toe with infrared (IR) photo sensor. A protocol consisting of two postures, i.e., supine and 45° reclining, was designed to conduct laboratory trial in this study. During the period of performing the protocol of these postures, the lower limb was passively raised from the heights of 10 cm to 60 cm randomly and individually with sponge blocks underneath the foot. Results: In the supine posture, the higher the foot was passively raised, the more the blood PPG signal decreased. In the 45° reclining posture, the blood PPG signal increased at the beginning and then decreased in the foot height position from 10 cm to 60 cm. In both postures the normalized AC signal changes significantly while the normalized DC signal changes little. Conclusion: The toe PPG signals can obviously indicate the regulated blood volume change with the designated postural procedures due to the heart level position.
|
| 关 键 词： | 脉搏 PPG信号调节 身体姿势 下肢高度 趾尖效应 |
| 收稿时间： | 2006-04-26 |
| 修稿时间： | 2006-08-01 |
Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height |
| |
| CRABTREE Vincent P.,AZORIN-PERIS Vincent,ECHIADIS Angelos,SMITH Peter R..Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height[J].Journal of Zhejiang University Science,2007,8(6):916-920. |
| |
| Authors: | Xin Shang-zhi Hu Sijung Crabtree Vincent P Zheng Jia Azorin-Peris Vincent Echiadis Angelos Smith Peter R |
| |
| Institution: | (1) College of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China;(2) Department of Electronic and Electrical Engineering, Loughborough University, Leicestershire, LE11 3TU, UK |
| |
| Abstract: | Objective To study the regulation of blood pulse volume via photoplethysmography (PPG) signal detected from toe, while the lower limb
is passively raised in different height positions.
Methods Use a modified non-invasive PPG technique to detect the blood pulse signal on toe with infrared (IR) photo sensor. A protocol
consisting of two postures, i.e., supine and 45° reclining, was designed to conduct laboratory trial in this study. During
the period of performing the protocol of these postures, the lower limb was passively raised from the heights of 10 cm to
60 cm randomly and individually with sponge blocks underneath the foot.
Results In the supine posture, the higher the foot was passively raised, the more the blood PPG signal decreased. In the 45° reclining
posture, the blood PPG signal increased at the beginning and then decreased in the foot height position from 10 cm to 60 cm.
In both postures the normalized AC signal changes significantly while the normalized DC signal changes little.
Conclusion The toe PPG signals can obviously indicate the regulated blood volume change with the designated postural procedures due to
the heart level position.
|
| |
| Keywords: | Photoplethysmography (PPG) Non-invasive Body posture Blood pulse volume signal Lower limb |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
