Results 51 to 60 of about 133,854 (326)

Annular and supra-annular structure assessments for transcatheter aortic valve replacement in patients with bicuspid aortic stenosis

open access: yesReviews in Cardiovascular Medicine, 2021
The clinical use indications for transcatheter aortic valve replacement (TAVR) for the treatment of severe symptomatic aortic stenosis (AS) have expanded from patients at high surgical risk to those at low risk based on the results of multiple large ...
Jian-Di Liu   +4 more
doaj   +1 more source

Interdisciplinary three-step strategy to treat aortic stenosis and coronary artery disease in a patient with end-stage chronic obstructive pulmonary disease [PDF]

open access: yes, 2012
Background: Valvular aortic stenosis is a common disease in the elderly, often in multimorbid patients. It is often associated with coronary artery disease and peripheral artery disease.
Beiras Fernández, Andrés   +6 more
core   +2 more sources

THE DESIGN AND DEVELOPMENT OF A CARDIAC SIMULATOR FOR THE EVALUATION OF HEART-VALVE PROSTHESIS

open access: bronzeThe Journal of Thoracic and Cardiovascular Surgery, 1963
Walter L. Starkey   +3 more
openaire   +4 more sources

An echocardiographic comparison of sutureless and conventional aortic valve replacement : a matched case-control study [PDF]

open access: yes, 2018
Background: Patients at a high operative risk for conventional aortic valve replacement (AVR) may be offered sutureless valve implantation. Sutureless valves resemble conventional valves but incorporate an anchoring mechanism without using annular ...
Camilleri, Liberato   +6 more
core   +1 more source

Prosthesis-Patient Mismatch Predicts Structural Valve Degeneration in Bioprosthetic Heart Valves [PDF]

open access: yesCirculation, 2010
Background— Prosthesis-patient mismatch (P-PtM) after aortic valve replacement results in disturbed valve performance associated with increased pressure gradients. However, it is unknown whether this can be related to future structural valve deterioration (SVD) of the bioprosthesis.
Kris Bogaerts   +5 more
openaire   +3 more sources

Analysis of left ventricular behaviour in diastole by means of finite element method [PDF]

open access: yes, 1979
The human left ventricle in diastole can be modelled as a passive structure with incremental internal pressure change being considered as the load. Recent developments in engineering stress analysis provide techniques for predicting the behaviour of ...
Gibson, DG, Vinson, CA, Yettram, AL
core   +2 more sources

“Valve-On-Valve” — an alternative method of surgical treatment of tissue valve dysfunctions

open access: yesРоссийский кардиологический журнал, 2019
Every year, the frequency of use of biological prostheses for treatment of valvular heart disease increases.The implantation of a biological prosthesis allows avoiding lifelong anticoagulant therapy, but at the same time it may require further ...
N. V. Rogulina, I. K. Khalivopulo
doaj   +1 more source

Experience in the development of a system for repeated prosthetic heart valves

open access: yesСибирский научный медицинский журнал, 2023
The failure of heart valve bioprostheses, requiring repeated intervention to replace them, is a serious drawback that narrows the scope of such devices.
E. A. Ovcharenko   +12 more
doaj   +1 more source

Prediction of Turbulent Shear Stresses through Dysfunctional Bileaflet Mechanical Heart Valves using Computational Fluid Dynamics

open access: yes, 2018
There are more than 300,000 heart valves implanted annually worldwide with about 50% of them being mechanical valves. The heart valve replacement is often a common treatment for severe valvular disease.
Gamage, Peshala T.   +2 more
core   +1 more source

Assessment of heart valve performance by finite-element design studies of polymeric leaflet-structures

open access: yesCurrent Directions in Biomedical Engineering, 2017
For the treatment of severe symptomatic aortic valve stenosis, minimally invasive heart valve prostheses are increasingly used, especially for elderly patients.
Pfensig Sylvia   +6 more
doaj   +1 more source

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