Results 251 to 260 of about 127,736 (302)

Anticoagulant therapy and heart valve prosthesis

1994
The success of current heart valve surgery is largely due to the development of valve prostheses to replace damaged native valves. Since 1960, when Starr performed the first successful mitral valve replacement with a caged ball prostheses [2], some 60 different prosthesis have been developed in 30 years. Most prostheses fall within two broad categories:
C. Doutremepuich, C. Deville, F. Madonna, S. A. M. Nashef   +3 more
openaire   +2 more sources

The Edwards MIRAtm Heart Valve Prosthesis:. A 2-Year Study

Journal of Cardiac Surgery, 2004
The Edwards MIRA mechanical heart valve is designed to optimize hemodynamics, reduce thrombogenicity, and avoid mechanical failure with a special hinge mechanism. The purpose of the study was to investigate the clinical performance and postoperative hemodynamic results of the first European patients receiving Edwards MIRA mechanical heart valves.From ...
E Schmitz, Rudolf Driever, Stefan Fuchs, H. O. Vetter, Markus Meissner   +4 more
openaire   +3 more sources

Hybrid textile heart valve prosthesis: preliminary in vitro evaluation

Biomedical Engineering / Biomedizinische Technik, 2018
Abstract Transcatheter aortic valve implantation (TAVI) is nowadays a popular alternative technique to surgical valve replacement for critical patients. Biological valve tissue has been used in these devices for over a decade now with over 100,000 implantations.
Vaesken, Antoine, Pidancier, Christian, Chafke, Nabil, Heim, Frederic   +3 more
openaire   +4 more sources

Use of enoxaparin in a pregnant woman with a mechanical heart valve prosthesis

British Journal of Obstetrics and Gynaecology, 2001
A 28 year old parous woman with a mechanical aortic valve prosthesis conceived following an episode of vomiting while on the combined oral contraceptive pill. At 7 weeks of gestation, when her pregnancy was ®rst con®rmed, she was instructed to stop taking warfarin and started self-administered subcutaneous enoxaparin at a dose of 80 mg (1 mg/kg body ...
J. Ellison, Isobel D. Walker, A J Thomson, Ian A. Greer   +3 more
openaire   +3 more sources

Textile transcatheter heart valve prosthesis: state of the art

Emerging Materials Research, 2015
Today, transcatheter aortic valve replacement (TAVR) has become a largely considered alternative technique to surgical valve replacement in patients who are not operable or patients with high risk for open chest surgery. However, the biological valve tissue used in the devices implanted clinically appears to be a fragile material when folded for low ...
Frederic Heim, Antoine Vaesken
openaire   +2 more sources

New polyurethane heart valve prosthesis: design, manufacture and evaluation

Biomaterials, 1996
In light of the thrombogenicity of mechanical valves and the limited durability of bioprosthetic valves, alternative designs and materials are being considered for prosthetic heart valves. A new tri-leaflet valve, made entirely from polyurethane, has been developed.
C.S. Hindle, Tom G. Mackay, A.C. Fisher, David J. Wheatley, Bernacca Gm   +4 more
openaire   +3 more sources

Sarcoma associated with silver coated mechanical heart valve prosthesis

The Annals of Thoracic Surgery, 2001
Sarcomas can develop in association with foreign material (eg, from Dacron vascular prostheses). We report on a left atrial rhabdomyosarcoma that developed within 1 year of mitral valve replacement by a Silzone-coated St. Jude Medical mechanical heart valve. Tumor resection and redo valve replacement were done.
Lothar Eckel, Hans-Georg Wollert, Herko Grubitzsch   +2 more
openaire   +3 more sources

[Heart valve prosthesis, pregnancy and anticoagulant therapy].

Minerva ginecologica, 1991
The reproductive possibilities of cardiopathic patients with cardiac valvular prostheses have greatly improved in the past forty years. The correct management of this risk pregnancies remains a problem, however, especially as regards the chronic anticoagulant treatment to which these patients are subjected.
CASTINO PM, ACTIS DATO A., REVELLI, Alberto, PORRO MC, ACTIS DATO G.   +4 more
openaire   +2 more sources

Characterization of a Novel Polymeric Trileaflet Heart Valve Prosthesis

ASME 2009 Summer Bioengineering Conference, Parts A and B, 2009
While heart valve prostheses have been used successfully since 1960, 10-year survival rates still range from 37–58% [1]. The underlying problem with bioprostheses is a limited life from structural changes such as calcification and leaflet wear, leading to valve failure [2]. Biological tissue fixation and methods used to mount the tissue to a supporting
Scott C. Corbett, Ahmet U. Coskun, Neil Verma, H. N. Hashemi, Parnian Boloori Zadeh   +4 more
openaire   +2 more sources

A study of the stability of orientation in the CarboMedics bileaflet heart valve prosthesis

European Journal of Cardio-Thoracic Surgery, 1992
A total of 25 CarboMedics bileaflet prostheses was studied in the immediate postoperative period and at 1 week, 1 month and 3 months after surgery. No evidence of rotation was found on visual comparison of valve orientation and there were no significant differences between successive studies for the distance between the septum and either the anterior ...
P.B. Deverall, John C. Chambers
openaire   +3 more sources