Results 11 to 20 of about 309,591 (336)

Acute and Long-Term Effects of Aortic Compliance Decrease on Central Hemodynamics: A Modeling Analysis

open access: yesFrontiers in Physiology, 2021
Aortic compliance is an important determinant of cardiac afterload and a contributor to cardiovascular morbidity. In the present study, we sought to provide in silico insights into the acute as well as long-term effects of aortic compliance decrease on ...
Stamatia Pagoulatou   +4 more
doaj   +1 more source

On the similarity between aortic and carotid pressure diastolic decay: a mathematical modelling study

open access: yesScientific Reports, 2023
Aortic diastolic pressure decay (DPD) has been shown to have considerable pathophysiological relevance in the assessment of vascular health, as it is significantly affected by arterial stiffening.
Vasiliki Bikia   +3 more
doaj   +1 more source

AI-Based Estimation of End-Systolic Elastance From Arm-Pressure and Systolic Time Intervals

open access: yesFrontiers in Artificial Intelligence, 2021
Left ventricular end-systolic elastance (Ees) is a major determinant of cardiac systolic function and ventricular-arterial interaction. Previous methods for the Ees estimation require the use of the echocardiographic ejection fraction (EF).
Vasiliki Bikia   +4 more
doaj   +1 more source

Validation of a Non-invasive Inverse Problem-Solving Method for Stroke Volume

open access: yesFrontiers in Physiology, 2022
Stroke volume (SV) is a major biomarker of cardiac function, reflecting ventricular-vascular coupling. Despite this, hemodynamic monitoring and management seldomly includes assessments of SV and remains predominantly guided by brachial cuff blood ...
Vasiliki Bikia   +6 more
doaj   +1 more source

Quantification of the Phenomena Affecting Reflective Arterial Photoplethysmography

open access: yesBioengineering, 2023
Photoplethysmography (PPG) is a widely emerging method to assess vascular health in humans. The origins of the signal of reflective PPG on peripheral arteries have not been thoroughly investigated.
Georgios Rovas   +2 more
doaj   +1 more source

Modeling the pulse signal by wave-shape function and analyzing by synchrosqueezing transform [PDF]

open access: yes, 2016
We apply the recently developed adaptive non-harmonic model based on the wave-shape function, as well as the time-frequency analysis tool called synchrosqueezing transform (SST) to model and analyze oscillatory physiological signals.
Chang, Hen-Hong   +6 more
core   +7 more sources

Mixed Valvular Disease Following Transcatheter Aortic Valve Replacement: Quantification and Systematic Differentiation Using Clinical Measurements and Image-Based Patient‐Specific In Silico Modeling [PDF]

open access: yes, 2020
Background: Mixed valvular disease (MVD), mitral regurgitation (MR) from pre‐existing disease in conjunction with paravalvular leak (PVL) following transcatheter aortic valve replacement (TAVR), is one of the most important stimuli for left ventricle (LV)
Amrute, Junedh M.   +13 more
core   +1 more source

Imaging hemodynamics [PDF]

open access: yesCancer and Metastasis Reviews, 2008
Microvascular permeability is a pharmacologic indicator of tumor response to therapy, and it is expected that this biomarker will evolve into a clinical surrogate endpoint and be integrated into protocols for determining patient response to antiangiogenic or antivascular therapies.
Dominique, Jennings   +2 more
openaire   +2 more sources

Including Aortic Valve Morphology in Computational Fluid Dynamics Simulations: Initial Findings and Application to Aortic Coarctation [PDF]

open access: yes, 2012
Computational fluid dynamics (CFD) simulations quantifying thoracic aortic flow patterns have not included disturbances from the aortic valve (AoV). 80% of patients with aortic coarctation (CoA) have a bicuspid aortic valve (BAV) which may cause adverse ...
Cava, Joseph Richard   +8 more
core   +2 more sources

Hemodynamic Evaluation of Nonselective \u3b2-Blockers in Patients with Cirrhosis and Refractory Ascites [PDF]

open access: yes, 2018
BACKGROUND:Nonselective \u3b2-blockers (NSBB) have been associated with increased incidence of paracentesis-induced circulatory dysfunction (PICD) and reduced survival in patients with cirrhosis and refractory ascites.
Angeli, Paolo   +10 more
core   +2 more sources

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