Results 1 to 10 of about 2,011,917 (215)

Usefulness of Proximal Coronary Wave Speed for Wave Intensity Analysis in Diseased Coronary Vessels [PDF]

Frontiers in Cardiovascular Medicine, 2020
Background: Wave speed is needed to separate net wave intensity into forward and backward traveling components. However, wave speed in diseased coronary arteries cannot be assessed from hemodynamic measurements obtained distal to a stenosis.
Lorena Casadonte, Jan Baan, Jan J. Piek, Maria Siebes   +3 more
doaj   +6 more sources

Noninvasive pulmonary artery wave intensity analysis in pulmonary hypertension.

Am J Physiol Heart Circ Physiol, 2015
Pulmonary wave reflections are a potential hemodynamic biomarker for pulmonary hypertension (PH) and can be analyzed using wave intensity analysis (WIA). In this study we used pulmonary vessel area and flow obtained using cardiac magnetic resonance (CMR)
Quail MA, Knight DS, Steeden JA, Taelman L, Moledina S, Taylor AM, Segers P, Coghlan GJ, Muthurangu V.   +8 more
europepmc   +6 more sources

The Use of Maximum Entropy to Enhance Wave Intensity Analysis: An Application to Coronary Arteries in Hypertrophic Obstructive Cardiomyopathy [PDF]

Frontiers in Cardiovascular Medicine, 2021
Background: Wave intensity analysis is useful for analyzing coronary hemodynamics. Much of its clinical application involves the identification of waves indicated by peaks in the wave intensity and relating their presence or absence to different ...
Nadine Francis, Nadine Francis, Peter P. Selwanos, Magdi H. Yacoub, Magdi H. Yacoub, Magdi H. Yacoub, Magdi H. Yacoub, Magdi H. Yacoub, Kim H. Parker   +8 more
doaj   +3 more sources

Feasibility of Wave Intensity Analysis from 4D Cardiovascular Magnetic Resonance Imaging Data [PDF]

Bioengineering, 2023
Congenital heart defects (CHD) introduce haemodynamic changes; e.g., bicuspid aortic valve (BAV) presents a turbulent helical flow, which activates aortic pathological processes.
Froso Sophocleous, Kiril Delchev, Estefania De Garate, Mark C. K. Hamilton, Massimo Caputo, Chiara Bucciarelli-Ducci, Giovanni Biglino   +6 more
doaj   +4 more sources

Wave Intensity Analysis Combined With Machine Learning can Detect Impaired Stroke Volume in Simulations of Heart Failure [PDF]

Frontiers in Bioengineering and Biotechnology, 2021
Heart failure is treatable, but in the United Kingdom, the 1-, 5- and 10-year mortality rates are 24.1, 54.5 and 75.5%, respectively. The poor prognosis reflects, in part, the lack of specific, simple and affordable diagnostic techniques; the disease is ...
Ryan M. Reavette, Spencer J. Sherwin, Meng-Xing Tang, Peter D. Weinberg   +3 more
doaj   +3 more sources

Coronary Wave Intensity Analysis as an Invasive and Vessel-Specific Index of Myocardial Viability. [PDF]

Circ Cardiovasc Interv, 2022
Background: Coronary angiography and viability testing are the cornerstones of diagnosing and managing ischemic cardiomyopathy. At present, no single test serves both needs.
Ryan M, De Silva K, Morgan H, O'Gallagher K, Demir OM, Rahman H, Ellis H, Dancy L, Sado D, Strange J, Melikian N, Marber M, Shah AM, Chiribiri A, Perera D.   +14 more
europepmc   +4 more sources

Pulmonary artery wave intensity analysis in pulmonary hypertension associated with heart failure and reduced left ventricular ejection fraction [PDF]

Pulmonary Circulation
Wave intensity analysis (WIA) uses simultaneous changes in pressure and flow velocity to determine wave energy, type, and timing of traveling waves in the circulation.
Ivan H. W. Yim, Kim H. Parker, Nigel E. Drury, Hoong Sern Lim   +3 more
doaj   +3 more sources

Assessment of Ventriculo‐Arterial Interactions in Early and Undifferentiated Pulmonary Hypertension Using Wave Intensity Analysis [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Pulmonary wave intensity analysis uses pressure and velocity data to assess the intensity, direction, type, and timing of waves. Its application in early and undifferentiated pulmonary hypertension (PH) to characterize right ventricular (RV ...
Sara Louise Hungerford, Gaurav Gulati, Kay Everett, Katherine Kearney, Edmund M. Lau, Daniel Burkhoff, Audrey Adji, Navin K. Kapur   +7 more
doaj   +6 more sources

Wave Intensity Analysis of Right Ventricular Function during Pulsed Operation of Rotary Left Ventricular Assist Devices. [PDF]

ASAIO J, 2019
Changing the speed of left ventricular assist devices (LVADs) cyclically may be useful to restore aortic pulsatility; however, the effects of this pulsation on right ventricular (RV) function are unknown.
Bouwmeester JC, Park J, Valdovinos J, Bonde P.   +3 more
europepmc   +4 more sources

Accurate and Standardized Coronary Wave Intensity Analysis [PDF]

IEEE Transactions on Biomedical Engineering, 2016
Objective: 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.
Simone Rivolo, Tiffany Patterson, Kaleab Asrress, Michael Marber, Simon Redwood, Nicolas P. Smith, Jack Lee   +6 more
semanticscholar   +7 more sources