Variation of peripheral pulse transit time with internal vascular pressure changes induced by arm movement

Zhiwei Sun; Xinge Jiang; Hua Wu; Feifei Liu

doi:10.3389/fnins.2023.1121902

Variation of peripheral pulse transit time with internal vascular pressure changes induced by arm movement

Front Neurosci. 2023 Feb 6:17:1121902. doi: 10.3389/fnins.2023.1121902. eCollection 2023.

Authors

Zhiwei Sun¹, Xinge Jiang¹, Hua Wu¹, Feifei Liu²

Affiliations

¹ School of Information Science and Electrical Engineering, Shandong Jiaotong University, Jinan, China.
² School of Science, Shandong Jianzhu University, Jinan, China.

Abstract

Pulse transit time (PTT) and blood pressure (BP) are widely used to quantify arterial characteristics. Arm position influences arterial BP and peripheral PTT. This study aims to quantify the relationship between PTT changes with internal vascular pressure variations induced by the arm moving. With left arm at horizontal position as reference and the right arm moving from 90 to 45, 0, -45, and -90° respectively, PTT difference was calculated by the difference of the pulse foot between right arm and left arm within the same heartbeat. The change in the BP was calculated from the gravitational effect with the measured arm length. Our results showed that the change in PTT with arm elevating is more obvious than that with arm lowering, indicating the different relationship between PTT changes due to the internal BP changes. This can help in understanding the inherent physiological/pathological mechanism of cardiovascular system.

Keywords: arm position; arterial blood pressure; arterial properties; hydrostatic principle; pulse transit time.

Grants and funding

This study was supported by the National Natural Science Foundation of China (Grant No. 82072014 and 61901114), the National Key R&D Program of China (Grant No. 2019YFE010670), the Shandong Province Natural Science Foundation (Grant No. ZR2020MF028), and the Key R&D Program of Shandong Province (Grant No. 2020CXGC010110).