Peripheral arterial volume distensibility changes with applied external pressure: significant difference between arteries with different compliance

Chen, Mengyan and Chen, Aiqing and Si, Xiaoshui and Ji, Mingxia and Zheng, Dingchang (2017) Peripheral arterial volume distensibility changes with applied external pressure: significant difference between arteries with different compliance. Scientific Reports, 7. p. 40545. ISSN 2045-2322

[img] Text
Published Version
Available under the following license: Creative Commons Attribution.

Download (787kB)
Official URL: http://doi.org/10.1038/srep40545

Abstract

This study aimed to quantify the different effect of external cuff pressure on arterial volume distensibility between peripheral arteries with different compliance. 30 healthy subjects were studied with the arm at two positions (0° and 45° from the horizontal level) to introduce different compliance of arteries. The electrocardiogram and finger and ear photoplethysmograms were recorded simultaneously under five external cuff pressures (0, 10, 20, 30 and 40 mmHg) on the whole arm to obtain arterial volume distensibility. With the applied external cuff pressures of 10, 20, 30 and 40 mmHg, the overall changes in arterial volume distensibility referred to those without external pressure were 0.010, 0.029, 0.054 and 0.108% per mmHg for the arm at the horizontal level, and 0.026, 0.071, 0.170 and 0.389% per mmHg for the arm at 45° from the horizontal level, confirming the non-linearity between arterial volume distensibility and external pressure. More interestingly, the significant differences in arterial volume distensibility changes were observed between the two arm positions, which were 0.016, 0.043, 0.116 and 0.281% per mmHg (all P < 0.01). Our findings demonstrated that arterial volume distensibility of peripheral arm arteries increased with external pressure, with a greater effect for more compliant arteries.

Item Type: Journal Article
Keywords: arterial volume distensibility, external pressure, arteries
Faculty: Faculty of Medical Science
Depositing User: Dr D Zheng
Date Deposited: 25 Jan 2017 14:57
Last Modified: 25 Jan 2017 14:57
URI: http://arro.anglia.ac.uk/id/eprint/701409

Actions (login required)

Edit Item Edit Item