Non-invasive method for the assessment of non-linear elastic properties and stress of forearm arteries in vivo

AIM: To propose a method for obtaining non-invasive highly accurate measurements of arterial diameter, thickness and pressure at a single location on a peripheral arm artery, and use this data to estimate the status of the arterial wall. METHODS: Diameter and thickness were measured with an A-mode ultrasonic echo-tracking device, with a precision of close to 1 micron. Pressure was measured with a photoplethysmograph at the finger level. A simple hemodynamic model was used to estimate, from the measured pressure pulse, the pressure waveform at the diameter-measuring site. RESULTS: The collected data made it possible to assess (1) the elastic response of the artery, through the compliance and distensibility, (2) the loading conditions, through the average stress-diameter curve and (3) the elastic properties of the wall material, through the incremental modulus of elasticity. CONCLUSION: This information can be used to assess the overall status of the arterial wall.


Published in:
Journal of hypertension. Supplement : official journal of the International Society of Hypertension, 10, 6, S23-S26
Year:
1992
ISSN:
0952-1178
Other identifiers:
Laboratories:




 Record created 2010-03-29, last modified 2018-03-18


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