Results 51 to 60 of about 364,169 (268)

Outcomes of valve-in-valve transcatheter aortic valve implantation with and without bioprosthetic valve fracture

EuroIntervention, 2021
Bioprosthetic valve fracture (BVF) is a technique to reduce gradients in valve-in-valve transcatheter aortic valve implantation (VIV-TAVI) procedures. The outcome of VIV-TAVI with BVF has not been compared with VIV-TAVI without BVF.The aim of this study was to evaluate the outcome of VIV-TAVI with BVF compared to VIV-TAVI without BVF.In total, 81 cases
Brinkmann, Christina, Abdel-Wahab, Mohamed, Bedogni, Francesco, Bhadra, Oliver D., Charbonnier, Gaetan, Conradi, Lenard, Hildick-Smith, David, Kargoli, Faraj, Latib, Azeem, Van Mieghem, Nicolas M., Mylotte, Darren, Landes, Uri, Pilgrim, Thomas, Stripling, Jan, Taramasso, Maurizio, Tchétché, Didier, Testa, Luca, Thiele, Holger, Webb, John, Windecker, Stephan, Witt, Julian, Wohlmuth, Peter, Schofer, Joachim   +22 more
openaire   +2 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

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

A meta‐analysis of valve‐in‐valve and valve‐in‐ring transcatheter mitral valve implantation [PDF]

Journal of Interventional Cardiology, 2018
ObjectivesWe performed a meta‐analysis of transcatheter mitral valve implantation (TMVI) for deteriorated bioprosthetic valves (valve‐in‐valve [VIV]‐TMVI) and/or failed annuloplasty rings (valve‐in‐ring [VIR]‐TMVI), comparing observed early (30‐day) mortality with predicted operative mortality.BackgroundIt remains unclear whether VIV/VIR‐TMVI reduces ...
Hisato, Takagi, Yosuke, Hari, Norikazu, Kawai, Tomo, Ando   +3 more
openaire   +2 more sources

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

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

JACC: 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, Matteo Saccocci, MD, Nicola Buzzatti, MD, Guido Ascione, MD, Davide Margonato, MD, Pamela Gatto, MD, Altin Palloshi, MD, Cristiano Sarais, MD, Matteo Longoni, RT, Francesco Maisano, MD   +9 more
doaj   +1 more source

Targeted alveo‐pleural fistula endobronchial valve treatment using ventilation scintigraphy

Respirology Case Reports, 2023
Persistent air‐leaks can be difficult to localize in radiology. Bronchoscopic management of air‐leaks requires identification of the leak's location to allow suitable targeted treatment.
Calvin Sidhu, Shoba Ratnagobal, Rajesh Thomas, Gary Y. C. Lee, Enya Drudy, Roslyn J. Francis   +5 more
doaj   +1 more source

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

Advanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki, Lea Holritz, Winnie E. Svendsen   +2 more
wiley   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

Versatile Pneumatic Twisted Coiled Actuators Enabled by Fiber‐Polymer Composite Fabrication

Advanced Functional Materials, EarlyView.
This work reports composite Pneumatic Twisted Coiled Actuators with embedded Kevlar fibers that convert pneumatic or hydraulic pressure into powerful linear motion. A novel precise manufacturing technique is used to systematically explore how design variables influence actuator mechanics and dynamics.
William J. Townsend, Jeongmin Kim, Samuel Tsai, Yichao Shi, Sameh Tawfick, James H. Pikul   +5 more
wiley   +1 more source