Results 31 to 40 of about 55,893 (193)

Comparison of mechanical and bioprosthesis valve in over 70-year-old patients with aortic valve replacement: mechanical & bioprosthesis valve

Van Tıp Dergisi, 2018
INTRODUCTION: Postoperative early and midterm results of mechanical valve were compared with bioprosthetic valve in patients over 70 years old who underwent aortic valve replacement (AVR) and/or coronary artery bypass graft (CABG).
Safa Gode, Ozan Onur Balkanay, Deniz Göksedef, Suat Nail Ömeroğlu, Gökhan İpek   +4 more
doaj   +1 more source

Mitral valve thrombosis in term pregnancy: A case report and review of the literature

Taiwanese Journal of Obstetrics & Gynecology, 2021
Objective: With this case report would like to emphasize the complexity that involves the management of pregnant women with mechanical heart valves. In that sense, an adequate interdisciplinary management of this potentially serious pathology is required
Andrea Espiau Romera, Javier Jimeno Sánchez, Javier Navarro Sierra, Teresa Simón Paracuellos, Francisco Javier Villalobos Salguero, Belén Rodríguez Solanilla   +5 more
doaj  

Smoothed particle hydrodynamics based FSI simulation of the native and mechanical heart valves in a patient-specific aortic model

Scientific Reports
The failure of the aortic heart valve is common, resulting in deterioration of the pumping function of the heart. For the end stage valve failure, bi-leaflet mechanical valve (most popular artificial valve) is implanted.
Sumanta Laha, Georgios Fourtakas, Prasanta K. Das, Amir Keshmiri   +3 more
doaj   +1 more source

Aortic valve replacement in sheep with a novel trileaflet mechanical heart valve prosthesis without anticoagulationCentral MessagePerspective

JTCVS Open, 2021
Background: Even after decades of intensive research, an ideal heart valve prosthesis remains elusive. Shortcomings of conventional devices include reduced durability of bioprostheses and the thrombogenicity of mechanical substitutes, necessitating ...
Tim Schaller, MSc, Michael Scharfschwerdt, PhD, Kathrin Schubert, MSc, Cornelia Prinz, PhD, Ulrich Lembke, PhD, Hans-Hinrich Sievers, MD   +5 more
doaj  

Successful management of left main coronary artery thrombus with intracoronary thrombolysis

Türk Kardiyoloji Derneği Arşivi, 2014
The management of valvular heart diseases with mechanical valves has been performed for several years. Warfarin has been used in patients with mechanical heart valves to protect against thromboembolic complications; nevertheless, in these patients ...
Ufuk Gürkan, Mustafa Adem Tatlısu, Emre Aruğaslan, Osman Bolca   +3 more
doaj   +1 more source

Biaxial Mechanical Characterizations of Atrioventricular Heart Valves

Journal of Visualized Experiments, 2019
Extensive biaxial mechanical testing of the atrioventricular heart valve leaflets can be utilized to derive optimal parameters used in constitutive models, which provide a mathematical representation of the mechanical function of those structures. This presented biaxial mechanical testing protocol involves (i) tissue acquisition, (ii) the preparation ...
Ross, Colton, Laurence, Devin, Wu, Yi, Lee, Chung-Hao   +3 more
openaire   +5 more sources

A chronological history of heart valve prostheses to offer perspectives of their limitations

Frontiers in Bioengineering and Biotechnology
Prosthetic heart valves (PHV) have been studied for around 70 years. They are the best alternative to save the life of patients with cardiac valve diseases. However, current PHVs may still cause significant disadvantages to patients.
Raquel Ahnert Aguiar Evangelista, Ana Luiza Resende Pires, Breno Valentim Nogueira, Breno Valentim Nogueira   +3 more
doaj   +1 more source

Squeeze Flow Measurements in Mechanical Heart Valves

ASAIO Journal, 2008
High-speed squeeze flow during mechanical valve closure is often thought to cause cavitation, either between the leaflet tip and flat contact area in the valve housing, seating lip, or strut flat seat stop, depending on design. These sites have been difficult to measure within the housing, limiting earlier research to study of squeeze flow outside the ...
Chi‐Wen Lo, Po‐Chien Lu, Jia-Shing Liu, Chi-Pei Li, Ned H. C. Hwang   +4 more
openalex   +5 more sources

Functional mechanical behavior of the murine pulmonary heart valve

Scientific Reports, 2023
Genetically modified mouse models provide a versatile and efficient platform to extend our understanding of the underlying disease processes and evaluate potential treatments for congenital heart valve diseases. However, applications have been limited to
Xinzeng Feng, Yifei Liu, David Kamensky, David W. McComb, Christopher K. Breuer, Michael S. Sacks   +5 more
doaj   +1 more source

Bioprosthetic Aortic Valve Degeneration: a Review from a Basic Science Perspective

Brazilian Journal of Cardiovascular Surgery, 2021
Introduction: The increase in the prevalence of aortic stenosis due to an aging population has led to an increasing number of surgical aortic valve replacements.
Tiago R Velho, Rafael Maniés Pereira, Frederico Fernandes, Nuno Carvalho Guerra, Ricardo Ferreira, Ângelo Nobre   +5 more
doaj   +1 more source