Results 11 to 20 of about 55,893 (193)
Evolution of mechanical heart valves [PDF]
The Annals of Thoracic Surgery, 2000 The need for prosthetic heart valves was long recognized but seemed an impossible dream before 1952 when Dr Charles Hufnagel clinically introduced a ball valve that he placed into the descending thoracic aorta for treatment of aortic valvular insufficiency.
Richard A. DeWall +2 more
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Thrombus at the pivot of a mechanical heart valve [PDF]
The Annals of Thoracic Surgery, 2003 Yukio Okazaki +3 more
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Circulation, 2007 The report by Svennevig and colleagues in this issue of Circulation will stand as an important contribution to our knowledge of the outcomes after heart valve replacement.1 This article, along with other extensive published series of patients followed up for as many as 4 decades after mechanical heart valve replacement, now help form the basis on which
Gus J. Vlahakes
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A mechanical heart valve is the best choice. [PDF]
Heart Asia, 2016 The choice of prosthesis type in patients with valvular heart disease should always be individualised. The treating heart team must weigh the concerns surrounding durability of bioprosthetic valves compared with mechanical valves and the need for lifelong anticoagulation required with mechanical valves.
Jaffer IH, Whitlock RP.
europepmc +5 more sources
Mechanisms of heart valve development and disease [PDF]
Development, 2020 ABSTRACT The valves of the heart are crucial for ensuring that blood flows in one direction from the heart, through the lungs and back to the rest of the body. Heart valve development is regulated by complex interactions between different cardiac cell types and is subject to blood flow-driven forces.
Anna O'Donnell +3 more
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Cardiac forces regulate zebrafish heart valve delamination by modulating Nfat signaling.
PLoS Biology, 2022 In the clinic, most cases of congenital heart valve defects are thought to arise through errors that occur after the endothelial-mesenchymal transition (EndoMT) stage of valve development.
Renee Wei-Yan Chow +13 more
doaj +1 more source
FLUID MECHANICS OF ARTIFICIAL HEART VALVES [PDF]
Clinical and Experimental Pharmacology and Physiology, 2009 SUMMARY Artificial heart valves have been in use for over five decades to replace diseased heart valves. Since the first heart valve replacement performed with a caged‐ball valve, more than 50 valve designs have been developed, differing principally in valve geometry, number of leaflets and material.
Ajit P. Yoganathan +3 more
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Which Biological Properties of Heart Valves Are Relevant to Tissue Engineering?
Frontiers in Cardiovascular Medicine, 2020 Over the last 20 years, the designs of tissue engineered heart valves have evolved considerably. An initial focus on replicating the mechanical and structural features of semilunar valves has expanded to endeavors to mimic the biological behavior of ...
Adrian H. Chester, K. Jane Grande-Allen
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Dynamic Echocardiographic Imaging of a Valve-in-Valve Mitral Prosthesis
Case Reports in Radiology, 2022 Dynamic imaging of heart valves and specifically prosthetic valves is a central benefit of echocardiography. Most bioprosthetic heart valves degenerate over a given time and hence require repeat valve replacement which carries a significant risk of ...
Bishoy Wassef +4 more
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Heart India, 2017 Objective: The goal of this study is to evaluate and compare the midterm outcomes of bioprosthetic heart valve replacement in terms of survival, valve-related events, quality of life, and economic aspects of treatment in population age 45 years and above
Dheeraj Sharma +3 more
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