Results 261 to 270 of about 127,736 (302)

Calculation of the stresses in the cusp of a leaflet heart-valve prosthesis

Polymer Mechanics, 1976
The stresses occurring in the cusp of a leaflet heart-valve prosthesis, simulated by a quarter of a spherical shell with a semicircular base, have been calculated and analyzed with a view to identifying and strengthening the most vulnerable points of the prothesis. Expressions are obtained for calculating the tensile and shear stress in the cusp of the
B. B. Stroganov, K. K. Livanov, E. V. Smurova   +2 more
openaire   +2 more sources

Pregnancy and successful delivery in a patient with triple heart valve prosthesis

International Journal of Gynecology & Obstetrics, 1993
AbstractA 42‐year‐old patient had a history of rheumatic fever in childhood. At 37 years of age, she underwent a triple heart valve replacement; thereafter, she was followed with the administration of warfarin and methyldigoxin. Her third pregnancy occurred with the last menstruation on 12 March 1990.
T. Furui, Seiji Nomura, Osamu Kurauchi, Shigehiko Mizutani, H. Oguchi, Yutaka Tomoda   +5 more
openaire   +3 more sources

Experience with the St. Jude medical heart valve prosthesis

1987
During the past 25 years, numerous different technical conceptions for the development of a suitable artificial heart valve have been followed, only a few of which led to clinical applicability. Among those prostheses which reached the stage of clinical testing, only a small number have proved to be reliable for a certain space of time.
H. Dalichau, A. Schmitz-Köhler, J. Kalotai, H. Nigbur   +3 more
openaire   +2 more sources

Pregnancy and Triple Heart Valve Prosthesis

Obstetric Anesthesia Digest, 1983
Francis M. James, B. L. Duffy
openaire   +2 more sources

First percutaneous implantation of a completely tissue-engineered self-expanding pulmonary heart valve prosthesis using a newly developed delivery system: a feasibility study in sheep

Cardiovascular Intervention and Therapeutics, 2016
H. Spriestersbach, Antonia Prudlo, M. Bartosch, B. Sanders, T. Radtke, F. Baaijens, S. Hoerstrup, F. Berger, B. Schmitt   +8 more
semanticscholar   +1 more source

Biological versus mechanical heart valve prosthesis during pregnancy in women with congenital heart disease.

International Journal of Cardiology, 2018
H. Lameijer, Y. J. van Slooten, M. Jongbloed, M. Oudijk, M. A. Kampman, A. V. van Dijk, M. Post, B. Mulder, K. Sollie, D. V. van Veldhuisen, T. Ebels, J. V. van Melle, P. Pieper   +12 more
semanticscholar   +1 more source

On-X Heart Valve Prosthesis: Numerical Simulation of Hemodynamic Performance in Accelerating Systole

Cardiovascular Engineering and Technology, 2016
N. Mirkhani, Mohammad Reza Davoudi, P. Hanafizadeh, D. Javidi, N. Saffarian   +4 more
semanticscholar   +1 more source

Biomechanical properties of hybrid heart valve prosthesis utilizing the pigs that do not express the galactose-α-1,3-galactose (α-Gal) antigen derived tissue and tissue engineering technique

Journal of Materials Science: Materials in Medicine, 2015
P. Wilczek, A. Lesiak, A. Niemiec-Cyganek, B. Kubin, R. Słomski, J. Nozynski, G. Wilczek, A. Mzyk, Michalina Gramatyka   +8 more
semanticscholar   +1 more source

Investigation of the tubular leaflet geometry of an aortic heart valve prosthesis by finite-element analysis

Biofizika, 2015
E. Ovcharenko, K. Klyshnikov, D. V. Nushtaev, G. V. Savrasov, L. Barbarash   +4 more
semanticscholar   +1 more source

A systematic review of the cost-effectiveness of heart valve replacement with a mechanical versus biological prosthesis in patients with heart valvular disease

Heart Failure Reviews, 2019
S. Azari, A. Rezapour, N. Omidi, V. Alipour, M. Tajdini, S. Sadeghian, N. Bragazzi   +6 more
semanticscholar   +1 more source