Results 121 to 130 of about 245,053 (402)

Aortic Valve Stenosis Alters Expression of Regional Aortic Wall Shear Stress: New Insights From a 4‐Dimensional Flow Magnetic Resonance Imaging Study of 571 Subjects

Journal of the American Heart Association : Cardiovascular and Cerebrovascular Disease, 2017
Background Wall shear stress (WSS) is a stimulus for vessel wall remodeling. Differences in ascending aorta (AAo) hemodynamics have been reported between bicuspid aortic valve (BAV) and tricuspid aortic valve patients with aortic dilatation, but the ...
P. Ooij, P. Ooij, M. Markl, J. Collins, J. Carr, C. Rigsby, R. Bonow, S. Malaisrie, P. McCarthy, P. M. Fedak, P. M. Fedak, A. Barker   +11 more
semanticscholar   +1 more source

Reduced exercise capacity is associated with left ventricular systolic dysfunction in long‐term survivors of allogeneic hematopoietic stem‐cell transplantation

Journal of Clinical Ultrasound, Volume 51, Issue 1, Page 5-15, January 2023., 2023
Exercise intolerance is a common complication in long‐term survivors of allogeneic hematopoietic stem‐cell transplantation. In this study, we found reduced oxygen uptake (VO2peak) by cardio‐pulmonary exercise tests to be associated with left ventricular systolic dysfunction by echocardiography.
Richard John Massey, Ole Henrik Myrdal, Phoi Phoi Diep, Marta Maria Burman, Lorentz Brinch, Lars Lysgaard Gullestad, Ellen Ruud, Svend Aakhus, Jan Otto Beitnes   +8 more
wiley   +1 more source

TAVI: New trials and registries offer further welcome evidence - U.S. CoreValve, CHOICE, and GARY [PDF]

, 2014
The introduction of transcatheter aortic valve implantation (TAVI) has resulted in a paradigm shift in the treatment of patients with severe aortic stenosis.
Di Mario, Carlo, Kilic, Ismail Dogu, Lindsay, Alistair, Pighi, Michele, Serdoz, Roberta, Sherif, Sara Abou   +5 more
core   +1 more source

Calcific aortic valve stenosis: hard disease in the heart

European Heart Journal, 2017
Calcific aortic valve stenosis (CAVS) is common in the ageing population and set to become an increasing economic and health burden. Once present, it inevitably progresses and has a poor prognosis in symptomatic patients.
F. Peeters, S. Meex, M. Dweck, E. Aikawa, H. Crijns, L. Schurgers, B. Kietselaer   +6 more
semanticscholar   +1 more source

Percutaneous dual-valve intervention in a high-risk patient with severe aortic and mitral stenosis

Heart Views, 2016
Aortic stenosis is the most frequent and mitral stenosis is the least frequent native single-sided valve disease in Europe. Patients with the combination of severe symptomatic degenerative aortic and mitral stenosis are very rare.
Blaz Mrevlje, Mohamad Aboukura, Christoph A Nienaber   +2 more
doaj   +1 more source

The Influence of the Aortic Root Geometry on Flow Characteristics of a Bileaflet Mechanical Heart Valve [PDF]

arXiv, 2018
Bileaflet mechanical heart valves have one of the most successful valve designs for more than 30 years. These valves are often used for aortic valve replacement, where the geometry of the aortic root sinuses may vary due to valvular disease and affect valve performance. Common geometrical sinus changes may be due to valve stenosis and insufficiency. In
arxiv  

Aortic valve sclerosis in rabbits [PDF]

, 2008
BACKGROUND AND AIM OF THE STUDY: Aortic valve sclerosis is fairly common and is currently seen as a marker of systemic atherosclerosis. For unclear reasons only a minority of those sclerotic valves will evolve to become stenotic suggesting that ...
Arsenault, Marie, Couët, Jacques, Drolet, Marie-Claude   +2 more
core  

Aortic valve stenosis-multimodality assessment with PET/CT and PET/MRI [PDF]

, 2019
Aortic valve disease is the most common form of heart valve disease in developed countries and a growing healthcare burden with an ageing population. Transthoracic and transoesophageal echocardiography remains central to the diagnosis and surveillance of
Dweck MR, Evangelos Tzolos, Jack PM Andrews, Marc R. Dweck, Marchesseau S, Pawade T, Rischpler C   +6 more
core   +1 more source

Automatic Time‐Resolved Cardiovascular Segmentation of 4D Flow MRI Using Deep Learning

Journal of Magnetic Resonance Imaging, Volume 57, Issue 1, Page 191-203, January 2023., 2023
Background Segmenting the whole heart over the cardiac cycle in 4D flow MRI is a challenging and time‐consuming process, as there is considerable motion and limited contrast between blood and tissue. Purpose To develop and evaluate a deep learning‐based segmentation method to automatically segment the cardiac chambers and great thoracic vessels from 4D
Mariana Bustamante, Federica Viola, Jan Engvall, Carl‐Johan Carlhäll, Tino Ebbers   +4 more
wiley   +1 more source

Immersed boundary-finite element model of fluid-structure interaction in the aortic root [PDF]

, 2015
It has long been recognized that aortic root elasticity helps to ensure efficient aortic valve closure, but our understanding of the functional importance of the elasticity and geometry of the aortic root continues to evolve as increasingly detailed in vivo imaging data become available.
arxiv   +1 more source