Results 241 to 250 of about 122,838 (298)

Outcomes after implantation of right-sided mechanical valve prostheses in congenital heart disease

Heart, 2023
Background Bioprosthetic valves are often used for pulmonary valve replacement (PVR) and tricuspid valve replacement (TVR) because of concerns about mechanical valve thrombosis in the right heart.
Omar Abozied, William R. Miranda, Ahmed Younis, Luke J. Burchill, C. Jain, H. Connolly, J. Dearani, Elizabeth H. Stephens, A. Egbe   +8 more
semanticscholar   +1 more source

In Vivo Evaluation of the Lillehei-Kaster Heart Valve Prosthesis

The Annals of Thoracic Surgery, 1976
In vivo evaluation of the Lillehei-Kaster heart valve prosthesis was performed in 28 patients; 22 had undergone aortic valve replacement and 6 had had mitral valve replacement. Mean pressure gradients ranged from 6 to 53 mm Hg in aortic prostheses; valve area varied from 0.83 to 2.9 cm2. The maximum opening angle of 80 degrees was never reached in this
U. Sigwart, H. Schmidt, U. Gleichmann, Hans-Georg Borst   +3 more
openaire   +3 more sources

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.
Christian Pidancier, Nabil Chakfe, Antoine Vaesken, Frederic Heim   +3 more
openaire   +3 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

Performance and outcomes of the SAPIEN 3 Ultra RESILIA transcatheter heart valve in the OCEAN-TAVI registry.

EuroIntervention
BACKGROUND Data on the performance of the latest-generation SAPIEN 3 Ultra RESILIA (S3UR) valve in patients who undergo transcatheter aortic valve replacement (TAVR) are scarce. AIMS We aimed to assess the clinical outcomes, including valve performance,
M. Yamamoto, Fumiaki Yashima, Shinichi Shirai, N. Tada, T. Naganuma, M. Yamawaki, F. Yamanaka, K. Mizutani, Masahiko Noguchi, Hiroshi Ueno, K. Takagi, Yohei Ohno, M. Izumo, H. Nishina, H. Suzuyama, Kazumasa Yamasaki, Kenji Nishioka, D. Hachinohe, Y. Fuku, Toshiaki Otsuka, M. Asami, Yusuke Watanabe, Kentaro Hayashida, on behalf of the OCEAN-TAVI investigators   +23 more
semanticscholar   +1 more source

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