Results 11 to 20 of about 23,863,144 (226)

Wave separation analysis-derived indexes obtained from radial and carotid tonometry in healthy pregnancy and pregnancy-associated hypertension: Comparison with pulse wave analysis-derived indexes [PDF]

Frontiers in Cardiovascular Medicine, 2022
BackgroundIncreased wave reflections assessed by pulse wave analysis (PWA) was proposed as one of the potential culprits of hypertension seen in women with pregnancy-associated hypertension (PAH).
María M. Pereira, Juan Torrado, Joshua Bock, Claudio Sosa, Alejandro Diaz, Daniel Bia, Yanina Zócalo   +6 more
doaj   +2 more sources

The reasons why fractional flow reserve and instantaneous wave-free ratio are similar using wave separation analysis [PDF]

BMC Cardiovascular Disorders, 2021
Background and objectives Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are the two most commonly used coronary indices of physiological stenosis severity based on pressure. To minimize the effect of wedge pressure (P wedge ), FFR
Soohong Min, Gwansuk Kang, Dong-Guk Paeng, Joon Hyouk Choi   +3 more
doaj   +2 more sources

Wave Climate, Geotechnical and Geophysical Analysis of the Tillamook Jetties [PDF]

Wave Energy AS (WE) is an ocean energy company from Norway established to develop, test, market and commercialize the patented SSG™ wave energy converter technology.
Wave Energy AS, Bakke, Monica
core   +6 more sources

Wave reflection quantification analysis and personalized flow wave estimation based on the central aortic pressure waveform

Frontiers in Physiology, 2023
Pulse wave reflections reflect cardiac afterload and perfusion, which yield valid indicators for monitoring cardiovascular status. Accurate quantification of pressure wave reflections requires the measurement of aortic flow wave.
Hongming Sun, Yang Yao, Wenyan Liu, Shuran Zhou, Shuo Du, Junyi Tan, Yin Yu, Lisheng Xu, Lisheng Xu, Lisheng Xu, Alberto Avolio   +10 more
doaj   +1 more source

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

Frontiers 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, Dionysios Adamopoulos, Georgios Rovas, Vasiliki Bikia, Nikolaos Stergiopulos   +4 more
doaj   +1 more source

Measurement of Pulmonary Artery Wave Reflection Before and After Mitral Valvuloplasty in Canine Patients With Pulmonary Hypertension Caused by Myxomatous Mitral Valve Disease

Frontiers in Veterinary Science, 2021
Background: Pulmonary arterial wave reflection provides novel information about pulmonary artery hemodynamics in pulmonary hypertension (PH). PH is common in dogs with myxomatous mitral valve disease (MMVD), though research examining the relationship ...
Tomohiko Yoshida, Tomohiko Yoshida, Kazumi Shimada, Lina Hamabe, Tsuyoshi Uchide, Ryou Tanaka, Katsuhiro Matsuura, Katsuhiro Matsuura   +7 more
doaj   +1 more source

Non-invasive Assessment of Pulmonary Artery Wave Reflection in Dogs With Suspected Pulmonary Hypertension

Frontiers in Veterinary Science, 2021
Background: Pulmonary arterial wave reflection (PAWR) occurs when the forward blood flow out the right ventricle is reflected by the pulmonary arterial tree, generating a backward wave.
Tomohiko Yoshida, Katsuhiro Matsuura, Goya Seijirow, Akiko Uemura, Zeki Yilmaz, Ryou Tanaka   +5 more
doaj   +1 more source

Aortic Pressure Levels and Waveform Indexes in People Living With Human Immunodeficiency Virus: Impact of Calibration Method on the Differences With Respect to Non-HIV Subjects and Optimal Values

Frontiers in Cardiovascular Medicine, 2021
Background: There are scarce and controversial data on whether human immunodeficiency virus (HIV) infection is associated with changes in aortic pressure (aoBP) and waveform-derived indexes.
Alejandro Diaz, Marina Grand, Marina Grand, Juan Torrado, Federico Salazar, Yanina Zócalo, Daniel Bia   +6 more
doaj   +1 more source

Prediction of Cardiovascular Events by Pulse Waveform Parameters: Analysis of CARTaGENE

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Waveform parameters provide approximate data about aortic wave reflection. However, their association with cardiovascular events remains controversial and their role in cardiovascular prediction is unknown.
Louis‐Charles Desbiens, Catherine Fortier, Annie‐Claire Nadeau‐Fredette, François Madore, Bernhard Hametner, Siegfried Wassertheurer, Mohsen Agharazii, Rémi Goupil   +7 more
doaj   +1 more source

Estimation of Pulmonary Arterial Wave Reflection by Echo-Doppler: A Preliminary Study in Dogs With Experimentally-Induced Acute Pulmonary Embolism

Frontiers in Physiology, 2021
Background: Pulmonary arterial (PA) wave reflection provides additional information for assessing right ventricular afterload, but its applications is hampered by the need for invasive pressure and flow measurements.
Tomohiko Yoshida, Tokuhisa Uejima, Syunta Komeda, Katsuhiro Matsuura, Akiko Uemura, Hiromasa Hayama, Takeshi Yamashita, Zeki Yilmaz, Ryou Tanaka   +8 more
doaj   +1 more source