Subharmonic response from ultrasound contrast microbubbles for noninvasive blood pressure estimation.

2011 ◽  
Vol 129 (4) ◽  
pp. 2513-2513
Author(s):  
Amit Katiyar ◽  
Kausik Sarkar ◽  
Flemming Forsberg
Keyword(s):  
Blood Pressure ◽  
Noninvasive Blood Pressure ◽  
Ultrasound Contrast ◽  
Subharmonic Response ◽  
Pressure Estimation ◽  
Blood Pressure Estimation ◽  
Contrast Microbubbles

scholarly journals Noninvasive blood pressure estimation with peak delay of different pulse waves

2019 ◽  
Vol 15 (3) ◽  
pp. 155014771983787 ◽  
Author(s):  
Yibin Li ◽  
Shengnan Li ◽  
Houbing Song ◽  
Bin Shao ◽  
Xiao Yang ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Smooth Muscle ◽  
Phase Difference ◽  
Blood Pressure Monitoring ◽  
Study Phase ◽  
Noninvasive Blood Pressure ◽  
Hemodynamic Model ◽  
Pulse Waves ◽  
Pressure Estimation ◽  
Blood Pressure Estimation

In this article, we discuss the validity of noninvasive continuous blood pressure estimation with two different types of peripheral pulse waves. Artery-blocking experiment shows that phase difference of two pulse waves at the same location is well related with blood pressure and blood flow fluctuation. Exercise-recovery experiment resulting from 16 subjects shows that phase difference varies with blood pressure with the correlation from 0.63 to 0.88 when blood pressure changes rapidly. Simulations based on a classic hemodynamic model verify the relationship between phase difference and blood pressure. However, phase difference is strongly correlated with smooth muscle state of the arterial wall as well. If smooth muscle information can be obtained by further study, phase difference can act as a promising approach to portable and wearable device for real-time blood pressure monitoring.

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

1995 ◽  
Vol 117 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Mauro Ursino ◽  
Cristina Cristalli
Keyword(s):  
Blood Pressure ◽  
Poisson Ratio ◽  
Young Modulus ◽  
External Pressure ◽  
Noninvasive Blood Pressure ◽  
Estimation Techniques ◽  
External Pressures ◽  
Pressure Transmission ◽  
Pressure Estimation ◽  
Blood Pressure Estimation

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.

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