Results 141 to 150 of about 1,453,502 (192)

Valve-Related Outcomes up to Six Years of a Next-Generation Bovine Pericardial Bioprosthesis Compared with Its Predecessor: A Propensity-Matched Analysis. [PDF]

Med Sci (Basel)
Francica A, Perrone F, Maffei I, Denora MT, Luciani GB.   +4 more
europepmc   +1 more source

Innovation and Challenges in Materials for Transcatheter Aortic Valves. [PDF]

J Cardiovasc Transl Res
Dorishetty P, Carlton A, Neethling L, Valente F.   +3 more
europepmc   +1 more source

Transcatheter Valve-in-Valve Implantation for Failed Bioprosthetic Heart Valves [PDF]

Circulation, 2010
Background— The majority of prosthetic heart valves currently implanted are tissue valves that can be expected to degenerate with time and eventually fail. Repeat cardiac surgery to replace these valves is associated with significant morbidity and mortality ...
John Webb, Josep Rodes-Cabau, Namal Wijesinghe   +2 more
exaly   +3 more sources

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Bioprosthetic heart valves: modes of failure

Histopathology, 2009
Valve replacement started in 1960, with the surgeon now having a significant variety of prosthetic heart valves from which to choose. These valves are broadly divided into mechanical heart valves (MHV) and bioprosthetic heart valves (BHV). Improvements in the performance and ease of usage of BHV without the need for anticoagulant therapy are among the ...

exaly   +3 more sources

Computer modelling of bioprosthetic heart valves

European Journal of Cardio-thoracic Surgery, 1992
The underlying assumptions and principles of a computer-based model for tissue heart valves are described. The model is used to relate observations of leaflet morphology to the requirements of proper valve function. Stress is the fundamental mechanical factor that limits the longevity of bioprosthetic heart valves--the higher the stress levels in the ...
G W Christie
exaly   +3 more sources

Deterioration of Bioprosthetic Heart Valves

ASAIO Journal, 1994
The aim of this study was to detect biologic factors in the structural deterioration of bioprosthetic heart valves. Prostheses were removed from patients after 4-8 years of implantation and submitted to biochemical and morphologic assays. Successive staining of biologic sections revealed colocalization of lipids and glycosaminoglycans underneath ...
M, Moczar, J P, Mazzucotelli, P, Bertrand, M, Ginat, J, Leandri, D, Loisance   +5 more
openaire   +2 more sources

Functional analysis of bioprosthetic heart valves

Journal of Biomechanics, 2005
Glutaraldehyde-treated bovine pericardium is used successfully as bioprosthetic material in the manufacturing of heart valves leaflets. The mechanical properties of bovine pericardial aortic valve leaflets seem to influence its mechanical behaviour and the failure mechanisms.
CORVI, ANDREA, T. SEVERI, ARCIDIACONO G.
openaire   +3 more sources

Flow Characteristics of Bioprosthetic Heart Valves

Chest, 1990
A review of the in vivo and in vitro fluid dynamic performance of three bioprosthetic heart valves is presented. Data on Hancock porcine valves (standard models 242 aortic and 342 mitral and modified orifice model 250 aortic), Carpentier-Edwards porcine valves (model 2625 aortic and 6625 mitral), and the Ionescu-Shiley pericardial valve are reviewed ...
M Y, Rashtian, D M, Stevenson, D T, Allen, A P, Yoganathan, E C, Harrison, W A, Edmiston, S H, Rahimtoola   +6 more
openaire   +2 more sources