Results 31 to 40 of about 229,628 (276)

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

Wave Intensity Analysis Provides Novel Insights Into Pulmonary Arterial Hypertension and Chronic Thromboembolic Pulmonary Hypertension [PDF]

Journal of the American Heart Association, 2017
Junjing Su, Charlotte Manisty, Kim H Parker   +2 more
exaly   +2 more sources

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

Racial Differences in Left Ventricular Mass and Wave Reflection Intensity in Children

Frontiers in Pediatrics, 2020
The burden of heart failure is disproportionately higher in African Americans, with a higher prevalence seen at an early age. Examination of racial differences in left ventricular mass (LVM) in childhood may offer insight into risk for cardiac target ...
Kevin S. Heffernan, Wesley K. Lefferts, Nader H. Atallah-Yunes, Alaina C. Glasgow, Brooks. B. Gump   +4 more
doaj   +1 more source

Accurate and Standardized Coronary Wave Intensity Analysis [PDF]

IEEE Transactions on Biomedical Engineering, 2017
Coronary wave intensity analysis (cWIA) has increasingly been applied in the clinical research setting to distinguish between the proximal and distal mechanical influences on coronary blood flow. Recently, a cWIA-derived clinical index demonstrated prognostic value in predicting functional recovery postmyocardial infarction.
Simone Rivolo, Tiffany Patterson, Kaleab N. Asrress, Michael Marber, Simon Redwood, Nicolas P. Smith, Jack Lee   +6 more
openaire   +4 more sources

Feasibility of cardiovascular magnetic resonance derived coronary wave intensity analysis. [PDF]

J Cardiovasc Magn Reson, 2016
Background Wave intensity analysis (WIA) of the coronary arteries allows description of the predominant mechanisms influencing coronary flow over the cardiac cycle. The data are traditionally derived from pressure and velocity changes measured invasively
Raphael CE, Keegan J, Parker KH, Simpson R, Collinson J, Vassiliou V, Wage R, Drivas P, Strain S, Cooper R, de Silva R, Stables RH, Di Mario C, Frenneaux M, Pennell DJ, Davies JE, Hughes AD, Firmin D, Prasad SK.   +18 more
europepmc   +3 more sources

Measurement, Analysis and Interpretation of Pressure/Flow Waves in Blood Vessels

Frontiers in Physiology, 2020
The optimal performance of the cardiovascular system, as well as the break-down of this performance with disease, both involve complex biomechanical interactions between the heart, conduit vascular networks and microvascular beds.
Jonathan P. Mynard, Jonathan P. Mynard, Jonathan P. Mynard, Jonathan P. Mynard, Avinash Kondiboyina, Avinash Kondiboyina, Remi Kowalski, Remi Kowalski, Remi Kowalski, Michael M. H. Cheung, Michael M. H. Cheung, Michael M. H. Cheung, Joseph J. Smolich, Joseph J. Smolich   +13 more
doaj   +1 more source

Changes in the Pulmonary Artery Wave Reflection in Dogs with Experimentally-Induced Acute Pulmonary Embolism and the Effect of Vasodilator

Animals, 2021
Pulmonary hypertension (PH) is a complex syndrome that has been frequently diagnosed in dogs and humans and can be detected by Doppler echocardiography and invasive catheterization. Recently, PAWR attracts much attention as a noninvasive approach for the
Tomohiko Yoshida, Ahmed S. Mandour, Katsuhiro Matsuura, Kazumi Shimada, Hussein M. El-Husseiny, Lina Hamabe, Zeki Yilmaz, Akiko Uemura, Ryou Tanaka   +8 more
doaj   +1 more source

Wave Reflection and Ventriculo-Arterial Coupling in Bicuspid Aortic Valve Patients With Repaired Aortic Coarctation

Frontiers in Pediatrics, 2022
BackgroundVentriculo-arterial (VA) coupling in bicuspid aortic valve (BAV) patients can be affected by the global aortopathy characterizing BAV disease and the presence of concomitant congenital lesions such as aortic coarctation (COA).
Elena Giulia Milano, Elena Giulia Milano, Sandra Neumann, Froso Sophocleous, Giulia Pontecorboli, Stephanie L. Curtis, Radwa Bedair, Massimo Caputo, Massimo Caputo, Giovanni Battista Luciani, Chiara Bucciarelli-Ducci, Giovanni Biglino, Giovanni Biglino   +12 more
doaj   +1 more source

Determination of wave intensity in flexible tubes using measured diameter and velocity [PDF]

, 2007
Wave intensity (WI) is a hemodynamics index, which is the product of changes in pressure and velocity across the wave-front. Wave Intensity Analysis, which is a time domain technique allows for the separation of running waves into their forward and ...
AW Khir, J Feng, Feng, J, Khir, AW
core   +1 more source