Artery Research

Volume 5, Issue 4, December 2011, Pages 162 - 162

P4.12 MODEL BASED ESTIMATION OF AORTIC PULSE WAVE VELOCITY

Authors
S. Wassertheurer1, B. Hametner1, T. Weber2
1Austrian Institute of Technology, Vienna, Austria
2Klinikum Wels-Grieskirchen, Wels, Austria
Available Online 29 November 2011.
DOI
10.1016/j.artres.2011.10.056How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

The proposed model is inspired by the theoretical frameworks of (1) Moens-Korteweg, (2) Bramwell & Hill, (3) Waterhammer equation used in ARCSolver. All of the mentioned equations allow the determination of velocity in an elastic tube from a single point measurement. Whereby Moens-Korteweg consider the tension of the wall and the radius of the vessel as well as the viscosity of blood which can be assumed constant and near one in the human circulation for simplicity. It’s now not really surprising that with increasing pressure both wall tension and wall radius will elevate. In younger age both parameters likely to the same extent and with only minor effects on PWV. With increasing age distensibility of the arterial wall degenerates. Subsequently an increase in pressure will not be compensated by a diameter change, even more tension within the wall will increase and PWV as well. All changes affect PWV non linear. Equation 2 rewrites equation 1 to consider observable variables like pressure and volume flow. Simply spoken, PWV is a result of pressure changes and volume displacement. In complex transmission line theory using Fourier analysis, the relation between arterial flow and blood pressure is described by the so called characteristic impedance (Zc) illustrated in the Waterhammer Equation (3). ARCSolver calculates (Zc) using an adopted Windkessel model. Determinants of ARCSolver-PWV are wall tension (impedance), aortic blood pressure and age.

Journal
Artery Research
Volume-Issue
5 - 4
Pages
162 - 162
Publication Date
2011/11/29
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
10.1016/j.artres.2011.10.056How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - JOUR
AU  - S. Wassertheurer
AU  - B. Hametner
AU  - T. Weber
PY  - 2011
DA  - 2011/11/29
TI  - P4.12 MODEL BASED ESTIMATION OF AORTIC PULSE WAVE VELOCITY
JO  - Artery Research
SP  - 162
EP  - 162
VL  - 5
IS  - 4
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2011.10.056
DO  - 10.1016/j.artres.2011.10.056
ID  - Wassertheurer2011
ER  -