Results 1 to 10 of about 106,958 (298)
Comparative study of wall shear stress at the ascending aorta for different mechanical heart valve prostheses [PDF]
arXiv, 2018 An experimental study is reported which investigates the wall shear stress (WSS) distribution in a transparent model of the human aorta comparing a bileaflet mechanical heart valve (BMHV) with a trileaflet mechanical heart valve (TMHV) in physiological pulsatile flow.
Qianhui Li, F. Hegner, C. Bruecker
arxiv +5 more sources
Hemodynamic evaluation of heart valve prostheses paradigm shift for transcatheter valves?
Journal of the American College of Cardiology, 2009 The treatment of aortic valve disease is undergoing rapid changes. In addition to conventional valve replacement that has evolved as the gold standard over several decades, transcatheter techniques have been introduced into clinical practice.
T. Walther, V. Falk
semanticscholar +6 more sources
Tissue Engineering Heart Valves – a Review of More than Two Decades into Preclinical and Clinical Testing for Obtaining the Next Generation of Heart Valve Substitutes [PDF]
Romanian Journal of Cardiology, 2021 Well documented shortcomings of current heart valve substitutes – biological and mechanical prostheses make them imperfect choices for patients diagnosed with heart valve disease, in need for a cardiac valve replacement.
Dan SIMIONESCU +4 more
doaj +2 more sources
Communications Biology, 2023 Pliable microfibrous, bioresorbable elastomeric heart valve prostheses are investigated in search of sustainable heart valve replacement. These cell-free implants recruit cells and trigger tissue formation on the valves in situ. Our aim is to investigate
Annemijn Vis +14 more
doaj +2 more sources
Journal of Cardiothoracic Surgery, 2020 Background Valve replacement surgery is the definitive management strategy for patients with severe valvular disease. However, valvular conduits currently in clinical use are associated with significant limitations.
Steve W. F. R. Waqanivavalagi +4 more
doaj +2 more sources
Evaluation of the marker of hypercoagulability prothrombin fragment F 1+2 in patients with mechanical or biological heart valve prostheses [PDF]
Arquivos Brasileiros de Cardiologia, 2002 OBJECTIVE: To investigate whether patients with heart valve prostheses and similar International Normalized Ratios (INR) have the same level of protection against thromboembolic events, that is, whether the anticoagulation intensity is related to the ...
Claudia Natália Ferreira +6 more
doaj +2 more sources
Polyurethane: material for the next generation of heart valve prostheses? [PDF]
European Journal of Cardio-Thoracic Surgery, 2000 The prospects for a durable, athrombogenic, synthetic, flexible leaflet heart valve are enhanced by the recent availability of novel, biostable polyurethanes. As a forerunner to evaluation of such biostable valves, a prototype trileaflet polyurethane valve (utilising conventional material of known in vitro behaviour) was compared with mechanical and ...
D.J. Wheatley
openalex +4 more sources
The concept of automated functional design of heart valve prostheses
Complex Issues of Cardiovascular Diseases, 2021 Aim. To develop an algorithm for the automated functional design of the heart valve leaflet apparatus.Methods. The geometry of the aortic valve leaflet was designed in the Matlab programming environment (MathWorks, Massachusetts, USA). Numerical modeling of the opening process was performed using Abaqus/CAE (Dassault Systemes, France).Results.
P. S. Onishchenko +3 more
openalex +4 more sources
POLYMERIC HEART VALVE PROSTHESES: CONDITION AND PERSPECTIVES
Russian Journal of Transplantology and Artificial Organs, 2018 The idea of creating a polymer heart valve, which has high strength and biocompatibility, occurs in the 60’s. Since then, many polymer compounds have been investigated, but no solution has been found for this problem. In recent years, in connection with the development of technologies for the synthesis of high-molecular compounds, new polymers have ...
М. А. Резвова +1 more
openalex +5 more sources
Annular injuries following the insertion of heart valve prostheses [PDF]
Thorax, 1974 Bowes, V. F., Datta, B. N., Silver, M. D. and Minielly, J. A. (1974). Thorax , 29 , 530-533. Annular injuries following the insertion of heart valve prostheses. The clinical presentation and morphological findings in eight cases of annular injury associated with the insertion of prosthetic heart valves are discussed.
V. F. Bowes +3 more
openalex +5 more sources