Results 71 to 80 of about 768,171 (308)

Handmade Trileaflet Valve Design and Validation for Pulmonary Valved Conduit Reconstruction Using Taguchi Method and Cascade Correlation Machine Learning Model

IEEE Access, 2018
Pulmonary valve diseases in children and adults include different degrees of stenosis, regurgitation, or congenital defects. Valve repair or replacement surgery is used to treat valvular dysfunction and to improve regurgitations flow for pulmonary valve ...
Chung-Dann Kan, Wei-Ling Chen, Chia-Hung Lin, Jieh-Neng Wang, Pong-Jeu Lu, Ming-Yao Chan, Jui-Te Wu   +6 more
doaj   +1 more source

Pathophysiology of Degenerative Mitral Regurgitation: New 3-Dimensional Imaging Insights

Circulation Cardiovascular Imaging, 2018
Despite its high prevalence, little is known about mechanisms of mitral regurgitation in degenerative mitral valve disease apart from the leaflet prolapse itself.
C. Antoine, F. Mantovani, G. Benfari, S. Mankad, J. Maalouf, H. Michelena, M. Enriquez-Sarano   +6 more
semanticscholar   +1 more source

State-of-the-Art Review: Technical and Imaging Considerations in Novel Transapical and Port-Access Mitral Valve Chordal Repair for Degenerative Mitral Regurgitation

Frontiers in Cardiovascular Medicine, 2022
Degenerative mitral regurgitation (DMR) based on posterior leaflet prolapse is the most frequent type of organic mitral valve disease and has proven to be durably repairable in most cases by chordal repair techniques either by conventional median ...
Romy M. J. J. Hegeman, Livia L. Gheorghe, Thomas L. de Kroon, Bart P. van Putte, Martin J. Swaans, Patrick Klein   +5 more
doaj   +1 more source

Prognostic Implications of Diffuse Interstitial Fibrosis in Asymptomatic Primary Mitral Regurgitation.

Circulation, 2019
Circulation. 2019;140:2122–2124.
D. Kitkungvan, Eric Y. Yang, K. C. El Tallawi, S. Nagueh, F. Nabi, Mohammad A. Khan, D. Nguyen, E. Graviss, G. Lawrie, W. Zoghbi, R. Bonow, M. Quiñones, D. Shah   +12 more
semanticscholar   +1 more source

The right ventricle under pressure: Anatomy and imaging in sickness and health

Journal of Anatomy, Volume 242, Issue 1, Page 17-28, January 2023., 2023
The RV is essential to the homeostasis of normal physiology and disturbances in RV structure and function has a substantial effect on patient outcomes. This review sets out to describe the developmental and anatomical complexities of the right ventricle while exploring the modern techniques employed to image and understand its function from a clinical ...
Harrison Stubbs, Alexander MacLellan, Stephanie Lua, Helen Dormand, Colin Church   +4 more
wiley   +1 more source

Computational analysis for competition flows in arteriovenous fistulas based on non-contrast magnetic resonance imaging [PDF]

arXiv, 2023
Introduction: Characteristics of hemodynamics strongly affect the patency of arteriovenous fistula (AVF) in hemodialysis patients. Because of pressure balance changes among arteries after AVF construction, regurgitating flow occurs in some patients.
arxiv  

Advancements in left ventricular assist devices to prevent pump thrombosis and blood coagulopathy

Journal of Anatomy, Volume 242, Issue 1, Page 29-49, January 2023., 2023
Left ventricular assist device (LVAD)‐related blood coagulopathy: Pump thrombosis is one of the most severe adverse events caused by LVADs. The contact of blood with artificial materials of LVAD pumps and cannulas triggers the coagulation cascade. Abstract Mechanical circulatory support (MCS) devices, such as left ventricular assist devices (LVADs) are
Grainne Malone, Gerges Abdelsayed, Fianait Bligh, Fatma Al Qattan, Saifullah Syed, Prateepan Varatharajullu, Augustin Msellati, Daniela Mwipatayi, Maimoona Azhar, Andrew Malone, Saulat H. Fatimi, Claire Conway, Aamir Hameed   +12 more
wiley   +1 more source

Exercise Dynamics in Secondary Mitral Regurgitation: Pathophysiology and Therapeutic Implications.

Circulation, 2017
Secondary mitral valve regurgitation (MR) remains a challenging problem in the diagnostic workup and treatment of patients with heart failure. Although secondary MR is characteristically dynamic in nature and sensitive to changes in ventricular geometry ...
P. Bertrand, E. Schwammenthal, R. Levine, P. Vandervoort   +3 more
semanticscholar   +1 more source

A European update on transcatheter aortic valve implantation (TAVI) in the COVID era

Journal of Anatomy, Volume 242, Issue 1, Page 50-63, January 2023., 2023
A timely review of key Transcatheter Aortic Valve Implantation (TAVI) device trials delineated by surgical risk. Abstract Minimally invasive approaches for aortic valve replacement are now at the forefront of pathological aortic valve treatment. New trials show comparability of these devices to existing therapies, not only in high‐risk surgical cohorts
Ishan Antony, Hyab Mehari Abraha, Aamir Hameed, Claire Conway   +3 more
wiley   +1 more source

Revealing unforeseen diagnostic image features with deep learning by detecting cardiovascular diseases from apical four-chamber ultrasounds [PDF]

arXiv, 2021
Background. With the rise of highly portable, wireless, and low-cost ultrasound devices and automatic ultrasound acquisition techniques, an automated interpretation method requiring only a limited set of views as input could make preliminary cardiovascular disease diagnoses more accessible.
arxiv