Results 71 to 80 of about 423,998 (313)

Transseptal BATMAN for High-Risk Valve-in-Ring Procedures

open access: yesJACC: Case Reports
Valve-in-ring procedures represent a feasible solution for high-risk patients with surgical repair failure. The risk of left ventricular outflow tract obstruction increases the challenge, and transcatheter approaches to prevent it are technically ...
Paolo Denti, MD   +9 more
doaj   +1 more source

A coupled mitral valve -- left ventricle model with fluid-structure interaction

open access: yes, 2017
Understanding the interaction between the valves and walls of the heart is important in assessing and subsequently treating heart dysfunction. With advancements in cardiac imaging, nonlinear mechanics and computational techniques, it is now possible to ...
Brown, André EX   +11 more
core   +3 more sources

Carcinoid Heart Disease: Early Outcomes after Surgical Valve Replacement in Nine Patients [PDF]

open access: yes, 2018
Aim: To describe the early outcomes of carcinoid patients undergoing surgical heart valve replacement. Methods: In a retrospective study, records of patients with symptomatic carcinoid heart disease referred for valve surgery between 2012 and 2016 ...
Clark, Stephen, Mujtaba, Syed Saleem
core   +2 more sources

Artificial Heart Valves [PDF]

open access: yesJAMA, 2021
William C, Frankel, Tom C, Nguyen
openaire   +2 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

Joint Modelling of Longitudinal and Survival Data with Applications in Heart Valve Data [PDF]

open access: yes, 2014
__Abstract__ The heart is one of the most important organs in the entire human body. Specifically, it is a pump composed of muscle which pumps blood throughout the blood vessels to various parts of the body by repeated rhythmic contractions.
Andrinopoulou, E-R. (Eleni-Rosalina)
core   +1 more source

Prediction of Turbulent Shear Stresses through Dysfunctional Bileaflet Mechanical Heart Valves using Computational Fluid Dynamics

open access: yes, 2018
There are more than 300,000 heart valves implanted annually worldwide with about 50% of them being mechanical valves. The heart valve replacement is often a common treatment for severe valvular disease.
Gamage, Peshala T.   +2 more
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

open access: yesAdvanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Figure-8 Tachycardia Confined to the Anterior Wall of the Left Atrium [PDF]

open access: yes, 2004
Incisional atrial tachycardias have been described most frequently in patients with previous corrective surgery for congenital heart defects and mitral valve disease.
Liuba, Ioan   +2 more
core  

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