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Augmentation index is not a proxy for wave reflection magnitude: mechanistic analysis using a computational model
2019
Journal of applied physiology
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Aortic blood pressure waveforms were characterized using AIx and the reflected wave pressure amplitude (p̂bw, obtained using wave separation analysis). ...
We conclude that the AIx reflects both cardiac and vascular properties and should not be considered an exclusively vascular parameter.NEW & NOTEWORTHY We used a state-of-the-art computational model to ...
arrival time. ...
doi:10.1152/japplphysiol.00769.2018
pmid:31161882
pmcid:PMC6711407
fatcat:qtihs5fr7zagtoaagrqgorsf7i
Pulse transit time estimation of aortic pulse wave velocity and blood pressure using machine learning and simulated training data
2019
PLoS Computational Biology
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In particular, we carry out theoretical assessment of estimating aortic pulse wave velocity, diastolic and systolic blood pressure and stroke volume using pulse transit/arrival timings derived from photopletyshmography ...
For instance, aortic pulse wave velocity can be estimated with a high accuracy (r > 0.9) when photopletyshmography is measured from left carotid artery using a combination of foot-to-foot pulse transmit ...
The estimation of blood pressure from arrival of pulse waves has also been largely studied; see e.g. [6, 9, 10] . ...
doi:10.1371/journal.pcbi.1007259
pmid:31415554
pmcid:PMC6711549
fatcat:jwz37le2xfcs7gk3ortixle4pm
Studies Made by Simulating Systole at Necropsy
1959
Circulation
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to changes in direction and velocity of blood in the vessels. ...
But one would expect that during a brief interval between the onset of ejection and the arrival of important amounts of blood at the aortic arch and the curve of the pulmonary artery, the ballistocardiogram ...
Observations of the pulse, the blood pressure, and the ballistocardiogram comprise the only methods that at this time give any promise of affording doctors a routine estimate of the cardiac strength of ...
doi:10.1161/01.cir.20.1.74
pmid:13663196
fatcat:2dllalyu2rbi7o32hpto777gai
Table of Contents
2021
IEEE Transactions on Biomedical Engineering
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Hook, and H. Park 2798 Pulse Arrival Time Segmentation Into Cardiac and Vascular Intervals -Implications for Pulse Wave Velocity and Blood Pressure Estimation . . . . . . . F. Beutel, C. Van Hoof, X. ...
Theranostic Wearable Device With Real-Time Vital Monitoring and Auto-Adjustable Compression Level for Venous Thromboembolism . . . . . . Z. Zhang, R. Zhang, C.-W. Chang, Y. Guo, Y.-W. Chi, and T. ...
doi:10.1109/tbme.2021.3097626
fatcat:3nydg6yavzgdpgsi2rgjdzv2pi
The role of ventricular-arterial coupling in cardiac disease and heart failure: assessment, clinical implications and therapeutic interventions. A consensus document of the European Society of Cardiology Working Group on Aorta & Peripheral Vascular Diseas
2019
European Journal of Heart Failure
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Therefore, the measurement of each component of this ratio or of novel more sensitive markers of myocardial (e.g. global longitudinal strain) and arterial function (e.g. pulse wave velocity) may better ...
In this consensus document, we describe the pathophysiology, the methods of assessment as well as the clinical implications of VAC in cardiac diseases and heart failure. ...
DBP, diastolic blood pressure; LV, left ventricular; PP, pulse pressure; SBP, systolic blood pressure. ...
doi:10.1002/ejhf.1436
pmid:30859669
fatcat:2r62r7cmujc4bhehzb23coftq4
Abnormal Wave Reflections and Left Ventricular Hypertrophy Late After Coarctation of the Aorta RepairNovelty and Significance
2017
Hypertension
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, pulse wave velocity, and wave reflections. ...
Patients had reduced total arterial compliance, increased pulse wave velocity, and larger backward compression waves compared with controls. ...
These data provide central blood pressure, systemic vascular resistance, TAC, local pulse wave velocity, and wave reflections. ...
doi:10.1161/hypertensionaha.116.08763
pmid:28115510
pmcid:PMC5295491
fatcat:yqumibvkyvci7awmmagzypn3wq
Advances in arterial stiffness assessment
2011
Artery Research
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Our work shows that pressure dependency of arterial stiffness can and should be accounted for to evaluate its implication for pressure augmentation and wave separation analysis. ...
To circumvent these problems, we developed a technique to measure pulse wave velocity (PWV) locally using multiple M-line ultrasound. ...
In addition, with increased PWV reflections will arrive earlier in the cardiac cycle and the PWV estimated may be subject to interference of reflected waves. ...
doi:10.1016/j.artres.2011.10.003
fatcat:7xbbp7ghy5hxlchq2rnffppkxe
Pressure Dependency of Retinal Arterial Pulse Wave Velocity in the Rat
2020
Artery Research
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Keywords Retinal artery small vessel arterial stiffness pressure dependence pulse wave velocity A B S T R A C T Purpose: The retinal vasculature provides unique in vivo access to the microcirculation and ...
presents the possibility of measuring small artery (retinal) stiffness using pulse wave velocity (PWV). ...
AUTHORS' CONTRIBUTION MB, AA and SG were responsible for the study conceptualization and writing (review and editing) the manuscript. MR, DG and MB did the data collection and curation. ...
doi:10.2991/artres.k.200201.001
fatcat:hcta63ei2zbrphl36tmi7j6ize
White Matter Hyperintensities: Use of Aortic Arch Pulse Wave Velocity to Predict Volume Independent of Other Cardiovascular Risk Factors
2013
Radiology
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To evaluate the relationship between pulse wave velocity (PWV) from the aortic arch and subsequent cerebral microvascular disease independent of other baseline cardiovascular risk factors among the participants ...
The optimal predictor variables of subsequent WMH volume adjusted for sex and ethnicity included aortic arch PWV, age, systolic blood pressure, hypertension treatment, and congestive heart failure. ...
Acknowledgment: We thank Akshay Goel for assistance with manuscript revision.
Disclosures of Conflicts of Interest: K.S.K. No relevant conflicts of interest to disclose. K.X.C. ...
doi:10.1148/radiol.13121598
pmid:23392429
pmcid:PMC3662900
fatcat:hshzzhk43fbsfhsd52ktwobreu
Velocity/Pressure Response Curve Characterization of the Arterial Path of the P3 Iliac Reflection During Hemorrhage Simulation
2012
Annual Review of Chaos Theory, Bifurcations and Dynamical Systems
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A new approach to tracking blood pressure, and pulse pressure specifically is presented that is based on a new form of pulse pressure wave analysis called Pulse Decomposition Analysis (PDA). ...
Furthermore the comparison of experimental and model predictions provides insight into the pressure/velocity responses of the different arterial segments that the iliac reflection pulse (P3) traverses. ...
Acknowledgement: This work was supported by the Office of Naval Research and the National Institutes of Health for portions of this research through contract N00014-09-M-0146 and grant 1R43HL087476-01A1 ...
doaj:76cd40c9971a4431b6fbf1e49c955ecd
fatcat:mhwqtsqr6nbjtblkas44czbcvm
Recommendations for Improving and Standardizing Vascular Research on Arterial Stiffness
2015
Hypertension
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blood pressure level and held constant for about10 seconds to record the pulse waves. ...
Bramwell-Hill modeling for local aortic pulse wave
velocity estimation: a validation study with velocity-encoded cardiovas-
cular magnetic resonance and invasive pressure assessment. ...
Zc Characteristic aortic impedance (also called Zo; measures aortic pressure-flow relationship; ((mmHg*sec)/mL) ...
doi:10.1161/hyp.0000000000000033
pmid:26160955
pmcid:PMC4587661
fatcat:xpvoleh6s5b43fdrbnsje3ccnq
Carotid artery longitudinal wall motion: regulatory factors and implications for arterial health
2018
Applied Physiology, Nutrition and Metabolism
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We demonstrated that CALM is partly controlled through the forward blood velocity wave and left ventricular rotation of the heart, and that diastolic CALM is uniquely related to aging and health status ...
We have known for a long time that arteries expand in order to absorb pressure; however, only recently have we identified that arteries also move longitudinally along the length of the arterial wall. ...
ACKNOWLEDGEMENTS We would like to thank Daanish Mulla for his assistance with analysis, as well as the student volunteers who helped with data preparation for this study. ...
doi:10.1139/apnm-2017-0651
pmid:29171957
fatcat:gh7konomvfbblabeq72rac5izy
On the importance of the non-uniform aortic stiffening in the hemodynamics of physiological ageing
2019
American Journal of Physiology. Heart and Circulatory Physiology
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Carotid-to-femoral pulse wave velocity (c-f PWV) was accurately predicted by the model (mean error=0.14 m/s, SD=0.77 m/s), with the greatest deviations being observed for older subjects. ...
In regard to aortic pressure, model-derived systolic blood pressure and augmentation index were both in good agreement (mean difference of 2.3 mmHg and 4.25%, respectively) with the predictions of a widely ...
wave velocity; CO, cardiac output; DBP,
diastolic blood pressure;
Table 2 . 2 Indices of correlation, accuracy, and agreement between the measured and method-derived c-f PWV values Correlation
Pearson's ...
doi:10.1152/ajpheart.00193.2019
pmid:31538801
fatcat:xsndmkumpvhehh7glt4ydn333m
Pulmonary artery pulse pressure and wave reflection in chronic pulmonary thromboembolism and primary pulmonary hypertension
2001
Journal of the American College of Cardiology
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OBJECTIVES The purpose of this time-domain study was to compare pulmonary artery (PA) pulse pressure and wave reflection in chronic pulmonary thromboembolism (CPTE) and primary pulmonary hypertension ( ...
BACKGROUND Pulmonary artery pressure waveform analysis provides a simple and accurate estimation of right ventricular afterload in the time-domain. ...
for the relatively lower pulse wave velocity (20, 27, 31) . ...
doi:10.1016/s0735-1097(00)01212-2
pmid:11263613
fatcat:gbggfe6ffvbzbijkz6r5lafx2a
AAPM/RSNA Physics Tutorial for Residents: Topics in US
2003
Radiographics
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The continuing development of US equipment aims to provide a greater understanding of hemodynamics and the relationship between blood flow and various disease processes. ). 2 .ء9 Vascular system, location ...
The Doppler effect as developed by sound propagation in human tissues and with the velocities observed for the human vasculature produces shifts in the frequencies of returning echo signals. ...
Pulsed-wave US spectrum displays the maximum, minimum, and average calculated blood flow velocities. ...
doi:10.1148/rg.235035080
pmid:12975518
fatcat:uzqm4faahvfctcm25gnpcctpjy
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