scholarly journals Cardiac and haemodynamic influence on carotid artery longitudinal wall motion

2017 ◽  
Vol 103 (1) ◽  
pp. 141-152 ◽  
Author(s):  
Jason S. Au ◽  
Paula A. Bochnak ◽  
Sydney E. Valentino ◽  
Jem L. Cheng ◽  
Eric J. Stöhr ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Wall Motion ◽  
Longitudinal Wall

Case Studies in Physiology: Using premature ventricular contractions to understand the regulation of carotid artery longitudinal wall motion

2021 ◽  
Vol 131 (3) ◽  
pp. 1157-1161
Author(s):  
Kailey A. Stevens ◽  
Jason S. Au
Keyword(s):  
Carotid Artery ◽  
Large Deviations ◽  
Wall Motion ◽  
Blood Velocity ◽  
Longitudinal Motion ◽  
Healthy Male ◽  
Artery Wall ◽  
Premature Ventricular Contractions ◽  
Longitudinal Wall ◽  
The Common

Benign arrhythmias can be a useful tool to probe new hypotheses in physiology. We tested the control of longitudinal motion of the common carotid artery wall using observations from spontaneous premature ventricular contractions in a healthy male. Forwards wall motion remained unchanged despite large deviations in local blood velocity and backwards wall motion mirrored changes in pulse pressure, blood velocity, and cardiac motion, thereby revising our original hypothesis of the control of longitudinal wall motion.

A Hypothesized Mechanistic Model of Longitudinal Wall Motion at the Common Carotid Artery

2019 ◽  
Author(s):  
Zhili Hao ◽  
Leryn Reynolds ◽  
John M. Herre
Keyword(s):  
Carotid Artery ◽  
Elastic Wave ◽  
Common Carotid Artery ◽  
Wall Motion ◽  
Mechanistic Model ◽  
External Source ◽  
Arterial Tree ◽  
Longitudinal Elastic Wave ◽  
Longitudinal Wall ◽  
The Common

Abstract In light of recently recognized independent clinical values of longitudinal wall motion ux(t) at the common carotid artery (CCA) and the struggle on appropriate arterial indices for interpreting ux(t), this paper hypothesizes a mechanistic model of ux(t) and explores clear implications of the antegrade amplitude ux0-ante and retrograde amplitude ux0-retro of ux(t) in systole to the cardiovascular (CV) system. By examining findings on ux(t) and other relevant findings through the lens of the engineering essence of ux(t), a mechanistic model of ux(t) is hypothesized: the left ventricle (LV) base rotation is the excitation source for initiating the longitudinal elastic wave propagating along the arterial tree; wall shear stress at an artery serves as a local external source for supplying energy to the longitudinal elastic wave; and longitudinal elasticity at the arterial wall dictates the wave propagation velocity. Integrating the mechanistic model with findings on ux(t) gives rise to interpretation of ux0-ante and ux0-retro for their clear implications: longitudinal elasticity Exx at the common carotid artery (CCA) is estimated from ux0-ante, and ux0-retro is an inverse indicator of the maximum base rotation of the LV and a positive indicator of longitudinal elasticity at the ascending aorta (AA). For the first time, this model reveals the mechanisms underlying those statistical-based findings on ux(t).

Carotid artery longitudinal wall motion alterations associated with metabolic syndrome and insulin resistance

2021 ◽  
Author(s):  
S. Helena Taivainen ◽  
Tiina M. Laitinen ◽  
Heikki Yli‐Ollila ◽  
Markus Juonala ◽  
Mika Kähönen ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Carotid Artery ◽  
Wall Motion ◽  
Longitudinal Wall

Carotid Artery Longitudinal Wall Motion Is Unaffected by 12 Weeks of Endurance, Sprint Interval or Resistance Exercise Training

2020 ◽  
Vol 46 (4) ◽  
pp. 992-1000
Author(s):  
Jason S. Au ◽  
Ninette Shenouda ◽  
Sara Y. Oikawa ◽  
Jenna B. Gillen ◽  
Robert W. Morton ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Exercise Training ◽  
Resistance Exercise ◽  
Wall Motion ◽  
Resistance Exercise Training ◽  
Longitudinal Wall

Associations between carotid artery longitudinal wall motion and arterial stiffness indicators in young children

2019 ◽  
Vol 287 ◽  
pp. 64-69 ◽  
Author(s):  
Nicole A. Proudfoot ◽  
Jason S. Au ◽  
Brian W. Timmons ◽  
Maureen J. MacDonald
Keyword(s):  
Carotid Artery ◽  
Arterial Stiffness ◽  
Young Children ◽  
Wall Motion ◽  
Longitudinal Wall

Retrograde shift in carotid artery longitudinal wall motion after one-year follow-up in children

2019 ◽  
Vol 288 ◽  
pp. 26-32 ◽  
Author(s):  
Jason S. Au ◽  
Nicole A. Proudfoot ◽  
Brian W. Timmons ◽  
Maureen J. MacDonald
Keyword(s):  
Carotid Artery ◽  
Wall Motion ◽  
Longitudinal Wall ◽  
One Year
Sign in / Sign up

Export Citation Format

Share Document