Results 61 to 70 of about 114,439,094 (292)

Case Report: Stretching the limits—late valvuloplasty for THV dysfunction following redo mitral valve-in-valve implantation

Frontiers in Cardiovascular Medicine, 2023
Late balloon valvuloplasty can be used to treat under-expansion-related transcatheter heart valve (THV) dysfunction. Whether this can be performed following redo-THV implantation is unknown.
David Meier, David Meier, David Meier, David Meier, Georgios Tzimas, Mariama Akodad, Ali Husain, Ali Husain, Ali Husain, James Dundas, James Dundas, James Dundas, Julius Jelisejevas, Julius Jelisejevas, Julius Jelisejevas, Anson Cheung, Anson Cheung, Anson Cheung, Stephanie L. Sellers, Stephanie L. Sellers, Stephanie L. Sellers, Jonathon A. Leipsic, Jonathon A. Leipsic, Jonathon A. Leipsic, Philipp Blanke, Philipp Blanke, Philipp Blanke, David A. Wood, David A. Wood, David A. Wood, Janarthanan Sathananthan, Janarthanan Sathananthan, Janarthanan Sathananthan, John G. Webb, John G. Webb, John G. Webb   +35 more
doaj   +1 more source

The Dos and Don’ts of Mitral Valve-in-Valve and Valve-in-Ring [PDF]

Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery, 2021
Matheus, Simonato, John K, Forrest, Danny, Dvir   +2 more
openaire   +2 more sources

Acute coronary artery occlusions complicating a valve-in-valve-in-valve procedure

Heart, 2013
An 83-year-old female with prior 23-mm Mitroflow biological prosthetic aortic valve replacement (Sorin Group Inc, Mitroflow Division, Vancouver, Canada), symptomatic severe periprosthetic regurgitation and preserved left ventricular ejection fraction was referred for transcatheter aortic valve implantation (TAVI).
Vázquez González, Nicolás, Salgado Fernández, Jorge, Barge Caballero, Gonzalo   +2 more
openaire   +3 more sources

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Comparative evaluation of left ventricular mass regression after aortic valve replacement: a prospective randomized analysis [PDF]

, 2011
Background: We assessed the hemodynamic performance of various prostheses and the clinical outcomes after aortic valve replacement, in different age groups.
Wood Jeffrey P, Doss, Mirko, Moritz Anton, Arndt H Kiessling, Mirko Doss, Kiessling, Arndt Holger, Anton Moritz, Jeffrey P Wood, Wood, Jeffrey P., Moritz, Anton, Doss Mirko, Kiessling Arndt H   +11 more
core   +2 more sources

A Digital Hydraulic Valve, Actuated Using a Piezoelectric Linear Motor [PDF]

, 2011
Proportional control in hydraulics is widely utilized. The most widely used current types of proportional valves utilize solenoid technology. While this technology has been around for decades and has been proven an effective means of control, there is ...
Bevill, Brian C
core   +1 more source

“TAVI: Valve in valve. A new field for structuralists? Literature review”

Hellenic Journal of Cardiology, 2020
Transcatheter aortic valve implantation (TAVI) led to the foundation of the subspecialty of structural heart interventions and created an emerging area of clinical and technical issues. Soon after TAVI introduction into clinical practice, boundaries were
Dimitrios A. Vrachatis, Michail Vavuranakis, Styliani Tsoukala, Sotiria Giotaki, Theodore G. Papaioannou, Gerasimos Siasos, Gerasimos Deftereos, Georgios Giannopoulos, Konstantinos Raisakis, Dimitrios Tousoulis, Spyridon Deftereos, Manolis Vavuranakis   +11 more
doaj   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Valve in Valve [PDF]

Circulation, 2012
The first mechanical heart valve prosthesis, designed by Dr Charles Hufnagel, was implanted to the descending aorta of a 30-year-old woman with severe aortic regurgitation in 1952.1 Eight years after the initial successful prosthetic valve implantation, Dr Harken sutured a prosthetic valve (Starr Edwards Valve) to the aortic annulus after removing the ...
E Murat, Tuzcu, Samir R, Kapadia, Lars G, Svensson   +2 more
openaire   +2 more sources