Results 111 to 120 of about 115,388 (336)

The Influence of the Aortic Root Geometry on Flow Characteristics of a Bileaflet Mechanical Heart Valve [PDF]

arXiv, 2018
Bileaflet mechanical heart valves have one of the most successful valve designs for more than 30 years. These valves are often used for aortic valve replacement, where the geometry of the aortic root sinuses may vary due to valvular disease and affect valve performance. Common geometrical sinus changes may be due to valve stenosis and insufficiency. In
arxiv  

Relevance of residual tricuspid regurgitation for right ventricular reverse remodelling after tricuspid valve intervention in patients with severe tricuspid regurgitation and right‐sided heart failure

European Journal of Heart Failure, EarlyView.
Right ventricular reverse remodelling after transcatheter tricuspid valve intervention (TTVI). Optimal tricuspid regurgitation (TR) reduction is critical for right ventricular reverse remodelling. CMR, cardiac magnetic resonance; echo, echocardiography; RV EDV, right ventricular end‐diastolic volume. Abstract Aims Right ventricular reverse remodelling (
Ludwig T. Weckbach, Lukas Stolz, Philipp M. Doldi, Hannah Glaser, Cecilia Ennin, Michael Kothieringer, Thomas J. Stocker, Michael Näbauer, Mohammad Kassar, Sara Bombace, Karl‐Patrik Kresoja, Philipp Lurz, Fabien Praz, Holger Thiele, Volker Rudolph, Steffen Massberg, Jörg Hausleiter   +16 more
wiley   +1 more source

Desempenho tardio das biopróteses valvulares porcinas Late performance of porcine valvular bioprostheses

Brazilian Journal of Cardiovascular Surgery, 1992
O objetivo deste trabalho foi o de estudar o desempenho tardio das biopróteses porcinas, modelo Carpentier-Edwards, com ênfase a todos os eventos mórbidos e/ou letais que pudessem estar relacionados à presença da bioprótese. Foram estudados 100 pacientes
Marcos Vinícius H. de Carvalho, Reinaldo W Vieira, Januário M Souza, Sérgio Almeida de Oliveira   +3 more
doaj  

A novel mathematical technique to assess of the mitral valve dynamics based on echocardiography [PDF]

arXiv, 2015
Purpose: The mechanics of the mitral valve leaflet as a nonlinear, inelastic and anisotropic soft tissue results from an integrated response of many mathematical/physical indexes' that illustrate the tissue. In the past decade, finite element modeling of complete heart valves has greatly aided evaluation of heart valve surgery, design of bioprosthetic ...
arxiv  

Construction strategies for 3D printed cardiac tissue repair materials and their application potential

Interdisciplinary Medicine, EarlyView.
This article provides an overview of the construction strategies of 3D printing materials in cardiac tissue repair, focusing on personalized design, advanced printing technologies, and multi‐material integration. It showcases the application of carbon‐based, biomass‐based, and bio‐based composites.
Mingru Kong, Zhen Wu, Zeliang Zheng, Binrui Zhang, Yuting Zeng, Hao Deng, Dongyi Feng, Wenjun Zhang, Congru Li, Xiaodong Fu, Leyu Wang   +10 more
wiley   +1 more source

Heart valve replacement with the Björk-Shiley and St Jude Medical prostheses: A randomized comparison in 178 patients [PDF]

, 2017
In 178 patients, a randomized prospective comparison between the 60° spherical disc Björk-Shiley (BS) and the St Jude Medical (SJM) heart valve prostheses was performed.
BERTSCHMANN, W., BURCKHARDT, D., DUBACH, P., GRÄDEL, E., HASSE, J., HOFFMANN, A., ROTH, J., STULZ, P., VOGT, S.   +8 more
core  

Full‐Field Assessment of Geometry and Collagenous Architecture of Porcine Valve Leaflets via Laser Micrometry and Quantitative Polarized Light Imaging

Journal of Biophotonics, EarlyView.
Despite the frequent failure of aortic valves and pediatric usage of pulmonary valves as a replacement, comparative studies on their collagenous architecture and macroscale geometries are limited. We non‐destructively compared thickness and anisotropy in aortic and pulmonary valve leaflets to better understand the differences between valve types ...
Shreya Sreedhar, Daniel P. Pearce, Colleen M. Witzenburg   +2 more
wiley   +1 more source

Estudo multicêntrico dos resultados das trocas valvares com o uso da bioprótese Biocor no Estado de Minas Gerais Multicentric study of the results with implanted bioprosthesis Biocor in the state of Minas Gerais

Brazilian Journal of Cardiovascular Surgery, 1988
No período de março de 1981 a março de 1988, foram implantadas 2324 biopróteses, em 2016 pacientes, em 5 Centros do Estado de Minas Gerais. Este estudo inclui somente a análise dos pacientes submetidos a troca valvar aórtica (n = 603) e mitral ( n = 1110)
Mário Osvaldo Vrandecic, Bayard Gontijo Filho, João Alfredo Paula e Silva, Fernando Antônio Fantini, Juscelino Teixeira Barbosa, Márcio C São José, Carlos Álvaro dos Santos Pinto, Gilberto Lino Vieira, Homero Geraldo Oliveira, Renato R Rabelo, Sebastião Correa Rabello, Alexandre V Brick, Eduardo Peredo, Adelson A Pedrosa, Antônio Luiz O Azevedo Sobrinho, Maurício Barbosa, Heberth César Miotto, Maria Aparecida Braga, Marco Antônio Salum, Júnia F Braga, Guilherme H Moreira, Osvald Hely Moreira, Carlos Alberto de Oliveira, Flávio Justo Maciel   +23 more
doaj  

Clinical outcome and hemodynamic behavior of the Labcor Dokimos Plus aortic valve [PDF]

, 2018
Die Labcor Dokimos Plus Bioprothese zeigte intraoperativ keine Komplikationen und postoperativ zufriedenstellende klinische Ergebnisse mit niedriger Morbidität und Mortalität.
Zhigalov, Konstantin
core   +1 more source

Advancements in Magnesium Applications, Biocompatible Implants to Nanoparticles in Medicine and Biomedical Innovations

MetalMat, EarlyView.
Magnesium (Mg) and its alloys are identified as prospective materials for orthopedic and cardiovascular applications because of their bio‐corrosiveness and ability to stimulate tissue reparative processes. Although compared with traditional metals, Mg is biocompatible; however, it has various problems that stem from its biodegradation nature, for ...
Muhammad Mubeen, Salman Khalid, Mohammad Tabish, Mubashar Mahmood, Muhammad Jawad, Muhammad Uzair Malik, Ghulam Yasin   +6 more
wiley   +1 more source