Results 51 to 60 of about 13,196 (308)

The choosing of optimal cell parameters of transcatheter aortic valve prosthesis [PDF]

Компьютерные исследования и моделирование, 2014
This paper presents the analysis of dependences between frame basic cell geometry parameters and function via finite element analysis. The simplified models of frame cell with varied strut width, thickness and quantity in a circle was researched to ...
Evgeny Andreevich Ovcharenko, Kirill Urievitch Klyshnikov, Gennady Victorovich Savrasov, Dmitry Vladimirovich Nyshtaev, Tatiana Vladimirovna Glushkova   +4 more
doaj   +1 more source

Meshalkin National Medical Research Center

Российский кардиологический журнал, 2021
We present three cases of successful transatrial transcatheter valve-in-valve implantation in patients with bioprosthetic mitral valve dysfunction.
A. V. Bogachev-Prokofiev, R. M. Sharifulin, D. A. Astapov, M. A. Ovcharov, M. A. Ovchinnikova, S. O. Lavinyukov, A. V. Sapegin, A. V. Afanasyev, S. I. Zheleznev, V. M. Nazarov, A. M. Chernyavsky   +10 more
doaj   +1 more source

Electropermanent Magnetic Muscles: Power‐Efficient, Low‐Voltage, Compact Magnetic Actuators to Power Wearables and Untethered Robots

Advanced Intelligent Systems, EarlyView.
This work presents compact, low‐voltage actuators based on electropermanent magnetic interactions. The actuators show good overall performance across key metrics and are implemented in wearable devices and untethered robots. Their ability to operate in different configurations and hold positions without energy input highlights their potential for ...
Arturo Castillo Ugalde, Carina Carrasco, Brijesh Chavda, Thileepan Stalin, Pablo Valdivia y Alvarado   +4 more
wiley   +1 more source

Retroca valvular Replacement of heart valves prostheses

Brazilian Journal of Cardiovascular Surgery, 1987
A reoperação de próteses valvulares tem sido realizada, com freqüência cada vez maior, nos vários Serviços de cirurgia cardíaca. Os detalhes do tratamento, a indicação e a técnica operatória melhoraram os resultados. No período de janeiro de 1984 a junho
Pablo M. A Pomerantzeff, Mário César S. de Abreu, Marisa Amato, Miguel Moretti, José Otávio C Auler Júnior, Max Grinberg, Flávio Tarasoutchi, Alfredo Mansur, Altamiro Ribeiro Dias, Delmont Bittencourt, Noedir A. G Stolf, Geraldo Verginelli, Adib D Jatene   +12 more
doaj  

The use of transgenic animals for xenotransplantation: An update

Animal Models and Experimental Medicine, EarlyView.
One way to produce genetically modified pigs is to use somatic cell nuclear transfer (SCNT). This procedure involves removing the metaphase plate from a mature oocyte using micromanipulation and then transferring the modified nucleus from the donor somatic cell to the oocyte.
Julia Motławska, Ana Amaral, Marta Cerveira‐Pinto, Paweł Kordowitzki   +3 more
wiley   +1 more source

Reconstituição da valva pulmonar e via de saída do ventrículo direito, com prótese bivalvular e prótese tubular valvada de tronco pulmonar de porco: estudo experimental e aplicação clínica Pulmonary valve and right ventricular oulet tract reconstruction with biovalvular prostheses and valved tubular prostheses of the pig pulmonary artery: experimental study and clinical application

Brazilian Journal of Cardiovascular Surgery, 1993
A obstrução da via de saída do ventrículo direito (VSVD) tem gerado muita polêmica em torno da técnica da sua correção cirúrgica, sendo a reconstituição ainda motivo de controvérsias.
Miguel A Maluf, José L Verde, João Carlos Leal, Roberto Catani, Herminio Vega Garcia Jr, Rubens Thevenard, Antonio C Carvalho, José L Andrade, José Carlos S Andrade, Domingo M Braile, Luiz Eduardo V Leão, Ênio Buffolo   +11 more
doaj  

Long-term survival following aortic valve replacement : the influence of age, prosthesis-patient mismatch and indexed effective orifice area [PDF]

, 2017
Background: Prosthesis-patient mismatch (PPM) has been linked to reduced long-term survival after aortic valve replacement. We studied the influence of age, PPM and indexed effective orifice area (iEOA) in this setting. Methods Patients (n=586) subjected
Camilleri, Liberato, Casha, Aaron, Manche, Alexander   +2 more
core   +3 more sources

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

The Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira, Victoria Brondani de Oliveira, Carlos Eduardo Seyfert, Luciano de Morais‐Pinto   +3 more
wiley   +1 more source

A Streamline Strategy for Indication and Length of Telemetry Monitoring After TAVR

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Both indication and length of ECG telemetry monitoring (TM) after transcatheter aortic valve replacement (TAVR) are not well defined. Aims We hypothesize that a targeted strategy for monitoring conductive disorders (CD) post‐TAVR can reduce the need and duration of in‐hospital TM without compromising safety. Methods We prospectively
Antonin Fournier, Pierre Robert, Benoit Lattuca, Claire Duflos, Maël‐Morvan Duroyon, Jean‐Christophe Macia, Laurent Schmutz, Matthieu Steinecker, Jean‐Michel Berdeu, Thomas Gandet, Jean Luc Pasquie, François Roubille, Guillaume Cayla, Florence Leclercq   +13 more
wiley   +1 more source

Fluid dynamics of aortic root dilation in Marfan syndrome

, 2014
Aortic root dilation and propensity to dissection are typical manifestations of the Marfan Syndrome (MS), a genetic defect leading to the degeneration of the elastic fibres. Dilation affects the structure of the flow and, in turn, altered flow may play a
Costantini, Martina, Espa, Stefania, Fortini, Stefania, Querzoli, Giorgio, Sorgini, Francesca   +4 more
core   +1 more source