Results 21 to 30 of about 107,940 (326)

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

Hemodynamic Evaluation of Heart Valve Prostheses

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.
Thomas Walther, Volkmar Falk
openalex   +5 more sources

Fifteen years of experience with ATS mechanical heart valve prostheses [PDF]

The Journal of Thoracic and Cardiovascular Surgery, 2009
ATS Medical, Inc, developed a mechanical heart valve that has been in use since 1992. In this article, we present the results of 15 years of follow-up of patients who have undergone ATS heart valve replacement at our hospital.We performed ATS heart valve replacements on 231 patients between September 1993 and March 2008.
Akira Sezai, Mitsumasa Hata, Tetsuya Niino, Isamu Yoshitake, Yuji Kasamaki, Atsushi Hirayama, Kazutomo Minami   +6 more
openalex   +3 more sources

Facile engineering of interactive double network hydrogels for heart valve regeneration

Nature Communications
Regenerative heart valve prostheses are essential for treating valvular heart disease, which requested interactive materials that can adapt to the tissue remodeling process.
Jinsheng Li, Weihua Qiao, Yuqi Liu, Huiling Lei, Shuangshuang Wang, Yin Xu, Ying Zhou, Shuyu Wen, Zhuoran Yang, Wenyi Wan, Jiawei Shi, Nianguo Dong, Yuzhou Wu   +12 more
doaj   +2 more sources

Biodegradable Poly-ε-Caprolactone Scaffolds with ECFCs and iMSCs for Tissue-Engineered Heart Valves

International Journal of Molecular Sciences, 2022
Clinically used heart valve prostheses, despite their progress, are still associated with limitations. Biodegradable poly-ε-caprolactone (PCL) nanofiber scaffolds, as a matrix, were seeded with human endothelial colony-forming cells (ECFCs) and human ...
G. Lutter, T. Puehler, Lukas Cyganek, Jette Seiler, Anita Rogler, Tanja Herberth, Philipp Knueppel, S. Gorb, J. Sathananthan, S. Sellers, Oliver J. Müller, D. Frank, Irma Haben   +12 more
semanticscholar   +1 more source

Management of Life-Threatening Bleeding in Patients With Mechanical Heart Valves

Cureus, 2021
Valvular heart disease is common in the United States, with a number of patients undergoing valve replacement procedures every year. The two types of valve prostheses include mechanical and bioprosthetic valves.
S. Huda, S. Kahlown, M. Jilani, D. Chaudhuri   +3 more
semanticscholar   +1 more source

Fluid-structure interaction simulation of prosthetic aortic valves : comparison between immersed boundary and arbitrary Lagrangian-Eulerian techniques for the mesh representation [PDF]

, 2016
In recent years the role of FSI (fluid-structure interaction) simulations in the analysis of the fluid-mechanics of heart valves is becoming more and more important, being able to capture the interaction between the blood and both the surrounding ...
AJ Gravel, Alessandra M. Bavo, AM Bavo, BE Griffith, BF Stewart, CS Peskin, CT Otto, F Bakhtiary, F Sturla, Francesco Iannaccone, G Marom, GA Holzapfel, Giorgia Rocatello, H Kim, H Mohammadi, H Reul, I Borazjani, Iman Borazjani, J De Hart, J De Hart, J Degroote, JA Stella, Jan Vierendeels, Joris Degroote, KD Lau, KS Kunzelman, L Ge, L Taelman, M Astorino, ND Dos Santos, P Kleine, P Segers, Patrick Segers, PN Jermihov, R Gnyaneshwar, R Lohner, R Van Loon, RG Leyh, S Annerel, S Chandra, S Nobari, W Wu   +41 more
core   +12 more sources

Computational Fluid Dynamics Assessment Associated with Transcatheter Heart Valve Prostheses: A Position Paper of the ISO Working Group

Cardiovascular Engineering and Technology, 2018
Zhenglun Alan Wei, Simon J. Sonntag, Milan Toma, Shelly Singh-Gryzbon, Wei Sun   +4 more
openalex   +3 more sources

A New Nanocomposite Copolymer Based On Functionalised Graphene Oxide for Development of Heart Valves

Scientific Reports, 2020
Polymeric heart valves seem to be an attractive alternative to mechanical and biological prostheses as they are more durable, due to the superior properties of novel polymers, and have the biocompatibility and hemodynamics comparable to tissue ...
E. Ovcharenko, A. Seifalian, M. Rezvova, K. Klyshnikov, T. Glushkova, T. N. Akenteva, L. Antonova, E. Velikanova, V. Chernonosova, G. Y. Shevelev, D. Shishkova, E. Krivkina, Yuliya A. Kudryavceva, A. Seifalian, L. Barbarash   +14 more
semanticscholar   +1 more source

Incidence and risk factors for thromboembolism and major bleeding in patients with mechanical heart valves: a tertiary hospital-based study in Botswana.

Cardiovascular Journal of Africa, 2020
INTRODUCTION Mechanical heart valve (MHV) prostheses increase the risk of thromboembolic complications. While warfarin anticoagulation reduces this risk, its use increases the risk of bleeding.
E. Botsile, J. Mwita
semanticscholar   +1 more source