Results 1 to 10 of about 13,046 (309)

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

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   +5 more sources

Mechanotransduction of autotransplants: remodeling potential of heart valves from autologous pericardial tissue [PDF]

Frontiers in Bioengineering and Biotechnology
Current commercial heart valve prostheses are non-living structures, either derived from artificial materials (mechanical valves) or foreign biological materials (xeno- or homo-graft).
Marvin Steitz, Marvin Steitz, Marvin Steitz, Mahamuda Badhon Khan, Alexander Breitenstein-Attach, Alexander Breitenstein-Attach, Alexander Breitenstein-Attach, Boris Warnack, Frank Edelmann, Frank Edelmann, Felix Berger, Felix Berger, Felix Berger, Boris Schmitt, Boris Schmitt, Boris Schmitt   +15 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, Lauro Mello Vieira, Luci Maria Sant'Ana Dusse, Carlos Faria Santos Amaral, William Antônio de Magalhães Esteves, Lúcia Maria Amorim Fenelon, Maria das Graças Carvalho   +6 more
doaj   +2 more sources

Advancements and Perspectives in the Bioprosthetic Heart Valve: A Comprehensive Review on Biomaterial Processing and Emerging Polymeric Materials [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Heart valve disease contributes to cardiovascular disease–associated death. Bioprosthetic heart valves have emerged as a preferred option for heart valve replacement due to their superior hemodynamic performance and reduced need for lifelong ...
Hanluo Li, Shenghua Li, Yalan Lei, Ming Sun, Chunlin Wu, Xueli Wang, Shiwen Xiong, Qing Wang, Sini Kang, Song Chen, Xiaoke Shang   +10 more
doaj   +2 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, K. Yu. Klyshnikov, М. А. Резвова, Е. А. Овчаренко   +3 more
openalex   +4 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

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, Е. А. Овчаренко   +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, B N Datta, Malcolm D. Silver, John A. Minielly   +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, Algert, Charles S, Ford, Jane B, Nippita, Tanya A, Figtree, Gemma A, Roberts, Christine L.   +5 more
  +10 more sources

The Closing Behavior of Mechanical Aortic Heart Valve Prostheses

ASAIO Journal, 2004
Mechanical artificial heart valves rely on reverse flow to close their leaflets. This mechanism creates regurgitation and water hammer effects that may form cavitations, damage blood cells, and cause thromboembolism. This study analyzes closing mechanisms of monoleaflet (Medtronic Hall 27), bileaflet (Carbo-Medics 27; St. Jude Medical 27; Duromedics 29)
Po‐Chien Lu, Jia-Shing Liu, Renhong Huang, Chi‐Wen Lo, Ho-Cheng Lai, Ned H. C. Hwang   +5 more
openalex   +4 more sources