Results 101 to 110 of about 260,960 (312)

On-pump fibrillating heart mitral valve replacement with the SAPIEN™ XT transcatheter heart valve [PDF]

, 2017
In some high-risk patients, standard mitral valve replacement can represent a challenging procedure, requiring a risky extensive decalcification of the annulus. In particular, high-risk redo patients and patients with a previously implanted transcatheter
Ferrari, Enrico, Locca, Didier, Marcucci, Carlo, Niclauss, Lars   +3 more
core  

Impact of the indexed effective orifice area on mid-term cardiac-related mortality after aortic valve replacement [PDF]

, 2010
Background There has been ongoing controversy as to whether prosthesis-patient mismatch (PPM, defined as indexed effective orifice area (EOAI)
Akdere, Deniz, Ali, Ayyaz, Bleiziffer, Sabine, Boehm, Johannes, Eichinger, Walter, Hettich, Ina M., Lange, Ruediger, Laubender, Rüdiger P., Ruzicka, Daniel   +8 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Modified ‘dumbbell' technique: a simple and intuitive method to position balloon-expandable stent valves [PDF]

, 2017
Intraoperative cardiac imaging plays a key role during transcatheter aortic valve replacement. In recent years, new techniques and new tools for improved image quality and virtual navigation have been proposed, in order to simplify and standardize stent ...
Berdajs, Denis, Ferrari, Enrico, Niclauss, Lars, von Segesser, Ludwig Karl   +3 more
core  

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Fusion Imaging Guidance for Coronary Reaccess After Valve-in-Valve Transcatheter Aortic Valve Replacement

JACC: Case Reports
Coronary reaccess can be difficult after valve-in-valve transcatheter aortic valve replacement. We present a case whereby prior valve-in-valve transcatheter aortic valve replacement created difficulty with coronary reaccess.
Craig Basman, MD, Ryan Kaple, MD, Sung-Han Yoon, MD, Vladimir Jelnin, MD, Haroon Faraz, MD   +4 more
doaj   +1 more source

Direct Access Valve Replacement (DAVR) — are we entering a new era in cardiac surgery? [PDF]

, 2017
Objective: This study validates the off-pump antegrade trans-ventricular route for ultrasound-guided direct access aortic valve replacement. Direct access aortic valve replacement using a transthoracic and valved stent-based approach offers numerous ...
Huber, Christoph H., von Segesser, Ludwig K.   +1 more
core  

Percutaneous pulmonary valve implantation alters electrophysiologic substrate [PDF]

, 2016
BACKGROUND: Percutaneous pulmonary valve implantation (PPVI) is first‐line therapy for some congenital heart disease patients with right ventricular outflow tract dysfunction.
Avari Silva, Jennifer N, Balzer, David T, Nguyen, Hoang H, Nicolas, Ramzi, Shahanavaz, Shabana, Van Hare, George F   +5 more
core   +2 more sources

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

Advanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song, Peiqi Niu, Wenxi Gu, Chun Lam Clement Chan, Jiuhong Yi, Xu Liu, Peng Tan, Chon In Haydn Cheong, Qingwen Guan, Dan Fang, Bingpu Zhou, Zi Liang Wu, Ji Liu, Yan Yan Shery Huang, Iek Man Lei   +14 more
wiley   +1 more source

Outcome of left heart mechanical valve replacement in West African children - A 15-year retrospective study

Journal of Cardiothoracic Surgery, 2011
Background The West African sub-region has poor health infrastructure. Mechanical valve replacement in children from such regions raises important postoperative concerns; among these, valve-related morbidity and complications of lifelong anticoagulation ...
Tamatey Martin, Tettey Mark, Aniteye Ernest, Edwin Frank, Frimpong-Boateng Kwabena   +4 more
doaj   +1 more source