Results 11 to 20 of about 107,940 (326)
A chronological history of heart valve prostheses to offer perspectives of their limitations [PDF]
Frontiers in Bioengineering and BiotechnologyProsthetic 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 +3 more
doaj +5 more sources
Comparative study of wall shear stress at the ascending aorta for different mechanical heart valve prostheses [PDF]
Journal of Biomechanical Engineering, 2018 An experimental study is reported which investigates the wall shear stress (WSS) distribution in a transparent model of the human aorta comparing a SJM Regent bileaflet mechanical heart valve (BMHV) with the Lapeyre-Triflo FURTIVA trileaflet mechanical ...
Qianhui Li, Christoph Bruecker
semanticscholar +6 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
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
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
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Frontiers in Cardiovascular Medicine, 2021 Introduction: Pediatric patients with cardiac congenital diseases require heart valve implants that can grow with their natural somatic increase in size. Current artificial valves perform poorly in children and cannot grow; thus, living-tissue-engineered
Ionela Movileanu +28 more
doaj +2 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
Heart Valve Prostheses in Pregnancy: Outcomes for Women and Their Infants [PDF]
Journal of the American Heart Association, 2014 Background As the prognosis of women with prosthetic heart valves improves, and increasing number are contemplating and undertaking pregnancy. Accurate knowledge of perinatal outcomes is essential, assisting counseling and guiding care.
Lawley, Claire M +5 more
+10 more sources