Results 31 to 40 of about 200,381 (301)

Computation of Vascular Parameters: Implementing Methodology and Performance Analysis

Biosensors, 2023
This paper presents the feasibility of automated and accurate in vivo measurements of vascular parameters using an ultrasound sensor. The continuous and non-invasive monitoring of certain parameters, such as pulse wave velocity (PWV), blood pressure (BP),
Mohamed Yacin Sikkandar, Sridharan Padmanabhan, Bobby Mohan, Ibrahim AlMohimeed, Ahmad Alassaf, Shady A. Alshewaier, Ali Abdullah Almukil, Sabarunisha Begum   +7 more
doaj   +1 more source

A time-invariant visco-elastic windkessel model relating blood flow and blood volume [PDF]

, 2009
The difference between the rate of change of cerebral blood volume (CBV) and cerebral blood flow (CBF) following stimulation is thought to be due to circumferential stress relaxation in veins (Mandeville, J.B., Marota, J.J.A., Ayata, C., Zaharchuk, G ...
Alexander, Bergel, Boas, Burnham, Buxton, Buxton, Deneux, Donahue, Fogliardi, Frank, Friston, Grubb, Herman, Hillman, Huppert, Ito, Ito, Jin, John Mayhew, Jones, Jones, Jones, Kennerley, Kida, Kim, Klabunde, Kong, Kontos, Kontos, Lee, Linehan, Mandeville, Martindale, Mayhew, Molino, Nilsson, Orosz, Paulson, Porciuncula, Remington, Risberg, Roy, Royl, Segers, Smith, Stergiopulos, Ursino, Vakorin, Vazquez, Wang, Westerhof, Ying Zheng, Zheng, Zheng   +53 more
core   +1 more source

Impact of Vascular Hemodynamics on Aortic Stenosis Evaluation: New Insights Into the Pathophysiology of Normal Flow—Small Aortic Valve Area—Low Gradient Pattern

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017
BackgroundAbout 50% of normal‐flow/low‐gradient patients (ie, low mean gradient [MG] or peak aortic jet velocity and small aortic valve area) have severe aortic valve calcification as measured by computed tomography.
Nancy Côté, Louis Simard, Anne‐Sophie Zenses, Lionel Tastet, Mylène Shen, Marine Clisson, Marie‐Annick Clavel   +6 more
doaj   +1 more source

Changes in Arterial Stiffness in Response to Various Types of Exercise Modalities: A Narrative Review on Physiological and Endothelial Senescence Perspectives

Cells, 2022
Arterial stiffness is a reliable independent predictor of cardiovascular events. Exercise training might enhance arterial compliance through improved metabolic health status.
Sandhya Kresnajati, Yi-Yuan Lin, Toby Mündel, Jeffrey R. Bernard, Hsin-Fu Lin, Yi-Hung Liao   +5 more
doaj   +1 more source

Dissociation of Carotid and Forearm Pressure Decay Constants (tau), Windkessel Compliances, and Pulse Wave Velocities: Implications for Circulatory Models

Artery Research, 2019
Windkessel (WK) models have often been used to simulate the arterial circulation. We studied a critical characteristic of WK function, the arterial pressure-decay constant tau, to test whether all arterial regions share the same WK characteristics, which
Joseph Lewis Izzo, Muhammed Absar Anwar, Sherif Elsayed, Peter John Osmond, Benjamin Gavish   +4 more
doaj   +1 more source

Left ventricular heart failure and pulmonary hypertension [PDF]

, 2015
In patients with left ventricular heart failure (HF), the development of pulmonary hypertension (PH) and right ventricular (RV) dysfunction are frequent and have important impact on disease progression, morbidity, and mortality, and therefore warrant ...
Anton Vonk-Noordegraaf, J. Simon R. Gibbs, Jean-Luc Vachiéry, Kovacs, Lancellotti, Nagueh, Rolf Wachter, Stephan Rosenkranz, Teresa De Marco   +8 more
core   +2 more sources

Integral Effects of Systemic Nitric Oxide Synthase Inhibition on Carotid Arterial Compliance [PDF]

, 2009
Decreased arterial compliance (increased arterial stiffness) is associated with cardiovascular events. Nitric oxide regulates vascular tone, which can influence arterial compliance.
Ajisaka, Ryuichi, Komine, Hidehiko, Maeda, Seiji, Nakamura, Mariko, Saito, Yoko, Sugawara, Jun, Tanaka, Hirofumi, Yoshizawa, Mutsuko   +7 more
core   +1 more source

Right ventricular outflow tract velocity time integral-to-pulmonary artery systolic pressure ratio: a non-invasive metric of pulmonary arterial compliance differs across the spectrum of pulmonary hypertension. [PDF]

, 2019
Pulmonary arterial compliance (PAC), invasively assessed by the ratio of stroke volume to pulmonary arterial (PA) pulse pressure, is a sensitive marker of right ventricular (RV)-PA coupling that differs across the spectrum of pulmonary hypertension (PH ...
Bhattacharya, Priyanka T., Birati, Edo Y., Chirinos, Julio A., Forfia, Paul R., Fox, Arieh L., Grandin, E. Wilson, Kawut, Steven M., Mao, Frances, Mazimba, Sula, Mazurek, Jeremy A., Menachem, Jonathan N., Smith, Kerri Akaya, Tanna, Monique S., Troutman, Gregory S., Vaidya, Anjali, Zamani, Payman   +15 more
core   +2 more sources

The Role of Invasive Procedures in the Treatment of Complicated Gastrointestinal Graft‐Versus‐Host Disease in Pediatric Patients

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Gastrointestinal graft‐versus‐host disease (GI GVHD) following hematopoietic stem cell transplant is typically managed with medical therapy, but surgery and angioembolization may be warranted in selected cases with life‐threatening complications.
Gaia Brunetti, Giorgio Persano, Chiara Grimaldi, Pier Luigi Di Paolo, Carmen Malaspina, Francesco Quagliarella, Valerio Balassone, Anna Chiara Iolanda Contini, Gian Luigi Natali, Rita Alaggio, Ivan Pietro Aloi, Tamara Caldaro, Alessandro Crocoli   +12 more
wiley   +1 more source

Vascular Decoupling in Septic Shock: The Combined Role of Autonomic Nervous System, Arterial Stiffness, and Peripheral Vascular Tone

Frontiers in Physiology, 2020
BackgroundAcute inflammation and sepsis are known to induce changes in vascular properties, leading to increased arterial stiffness; at the same time, the autonomic nervous system (ANS) also affects vascular properties by modulating the arterial smooth ...
Marta Carrara, Antoine Herpain, Antoine Herpain, Giuseppe Baselli, Manuela Ferrario   +4 more
doaj   +1 more source