Results 111 to 120 of about 40,848 (268)

End stage cardiomyopathy and secondary mitral insufficiency: surgical alternative with prostesis implant and left ventricular remodelling [PDF]

, 2006
OBJECTIVE: To present a new surgical approach that consists of the implantation of a mitral prosthesis smaller than the annulus with traction of the papillary muscles to reduce the sphericalness of the left ventricle.
Branco, João Nelson Rodrigues, Breda, João Roberto, Buffolo, Enio, Catani, Roberto, Fonseca, José Honório de Almeida Palma da, Teles, Carlos Alberto   +5 more
core   +3 more sources

Mono‐ and Bivalent Poly(iso‐butylene)‐Alanines for Drug‐Delivery of Nimodipine and Triamcinolone Acetonide

Macromolecular Rapid Communications, EarlyView.
Mono‐ and bivalent‐, alanine‐modified poly‐iso‐butylenes, folding into beta‐sheets, were prepared by living carbocationic polymerization and subsequent endgroup modification. These PIB‐conjugates are useful as solid polymers for the drug release of triamcinolone and nimodipine. ABSTRACT Poly‐iso‐butylene (PIB) is a well known biocompatible polymer with
Philipp S. Hilgeroth, Julius F. Butter, Wolfgang H. Binder   +2 more
wiley   +1 more source

Engineering stimuli‐responsive shape‐morphing through high‐resolution 4D printing

Responsive Materials, EarlyView.
This review summarizes recent progress in high‐resolution 4D printing with smart materials and micro/nanoscale techniques. It covers actuation strategies, key applications, and future challenges for scalable, precise shape‐morphing systems. Abstract 4D printing extends conventional additive manufacturing (AM) by enabling dynamic shape‐morphing ...
Shuheng Li, Ming Gao, Wenwan Shi, Xiaolu Sun, Yuning Zhou, Lihao Liu, Ji Qiu, Xiaoxiang Gao, Jing Sun, Xiaojiang Liu, Zhongze Gu   +10 more
wiley   +1 more source

Replacement of pulmonary artery trunk in sheep using tubular valved heterograft in non-aldehydic preservation [PDF]

, 2012
INTRODUCTION: The cardiac bioprostheses are related to thromboembolic events, infectious and degenerative diseases. Wear is mainly attributed to the denaturation of collagen. Glutaraldehyde, the predominant method of preservation of bioprostheses, favors
Almeida, Marco Antônio Cardoso de, Alves-Silva, Luiz Sérgio, Buffolo, Enio, Casagrande, Ivan Sergio Joviano, Christo, Sérgio Campos, Fonseca, José Honório de Almeida Palma da, Gaia, Diego Felipe, Souza, Helmgton José Brito de   +7 more
core   +3 more sources

In Vitro Calcification of Bioprosthetic Heart Valves: Method Validation by Comparative Heart Valve Calcification Testing

Artificial Organs, EarlyView.
We have developed a unique method for pre‐clinical heart valve prostheses evaluation of calcification propensity. Results from the test can directly be translated into improvements of prostheses design, materials, and anti‐calcification treatments, and therefore have a significant impact on heart valve prostheses quality and patient care in the future.
Nicole Kiesendahl, Christoph Schmitz, Lars Peters, Marek Weiler, Thomas Schmitz‐Rode, Ulrich Steinseifer, Johanna C. Clauser   +6 more
wiley   +1 more source

Mitral regurgitation in patients with severe aortic stenosis: Diagnosis and management [PDF]

, 2018
Severe aortic stenosis (AS) and mitral regurgitation (MR) frequently coexist. Although some observational studies have reported that moderate or severe MR is associated with higher mortality, the optimal management of such patients is still unclear ...
Grayburn, P. A., Sannino, A.
core   +1 more source

Surgical aortic valve replacement due to infective endocarditis after transcatheter aortic valve implantation with the self-expanding Portico valve prosthesis.

Annals of Cardiothoracic Surgery, 2019
An 83-year-old man with coronary heart disease, previous pacemaker implantation due to Mobitz II atrioventricular block, hypertension, hyperuricemia and dementia, presented with dyspnea NYHA III+.
Y. Sugimura, S. Katahira, Rene Lopez Lopez, P. Rellecke, A. Lichtenberg, P. Akhyari   +5 more
semanticscholar   +1 more source

Trial‐Based Hemolysis Modeling to Investigate Operating Modes of Continuous‐Flow LVADs

Artificial Organs, EarlyView.
This work presents a methodology for determining online‐capable hemolysis models for continuous‐flow LVADs, derived from in vitro trials. The models are based on fitting a modified power law and applying the Lagrangian approach. They assist clinicians in selecting treatment strategies that minimize hemolysis, as demonstrated with the Sputnik1 LVAD ...
Patrick Borchers, Steffen Leonhardt, Marian Walter   +2 more
wiley   +1 more source

Detection of fiber structure and calcification in xenogeneic pericardium by OCT

Current Directions in Biomedical Engineering
Aortic valve (AV) stenosis is the most treated heart valve disease and the only curative treatment is the surgical AV replacement or the transcatheter prosthesis implantation.
Golde Jonas, Schreiber Luise, Gerstner Patricia, Jannasch Anett, Schallert Ralf, Opitz Jörg, Sonntag Frank, Kopycinska-Müller Malgorzata, Tugtekin Sems-Malte, Dittfeld Claudia   +9 more
doaj   +1 more source

Transcranial Doppler-detected cerebral embolic load during transcatheter aortic valve implantation† [PDF]

, 2017
OBJECTIVES Transcatheter aortic valve implantation (TAVI) is an alternative to surgery for high-risk patients with severe aortic valve stenosis. Periprocedural stroke is reported at an incidence up to 10%.
Basciani, Reto, Carrel, Thierry, Eberle, Balthasar, Erdoes, Gabor, Huber, Christoph, Stortecky, Stefan, Wenaweser, Peter, Windecker, Stephan   +7 more
core