Mathematical Modeling of Noninvasive Blood Pressure Estimation Techniques—Part I: Pressure Transmission Across the Arm Tissue

[+] Author and Article Information
Mauro Ursino, Cristina Cristalli

Department of Electronics and Automatics, University of Ancona, via Brecce Bianche, 160131 Ancona, Italy

J Biomech Eng 117(1), 107-116 (Feb 01, 1995) (10 pages) doi:10.1115/1.2792258 History: Received April 09, 1993; Revised April 20, 1994; Online October 30, 2007


A mathematical model of the arm tissue mechanical behavior under the effect of external pressure loads is presented. The model has been used to study stress and strain distribution across the tissue, and pressure transmission to the brachial artery, when the arm is compressed by two adjacent cuffs independently inflated. Using this configuration, the tissue elastic parameters (Young modulus and Poisson ratio) can be individually identified using a simple and noninvasive experimental procedure. Model validation has been achieved by comparing its results with data obtained experimentally on 10 subjects. These comparisons demonstrate that the proposed model may constitute a simple but valid new tool able to describe tissue behavior, subjected to external pressures, with sufficient accuracy. Joined with a model of brachial hemodynamics, it might contribute to improve our understanding of noninvasive blood pressure estimation techniques.

Copyright © 1995 by The American Society of Mechanical Engineers
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