Results 101 to 110 of about 49,590 (306)

Hemodynamics of a Bileaflet Mechanical Heart Valve with Different Levels of Dysfunction [PDF]

Volume 2 Issue 5 - 2017, 2017
Heart disease is one of leading causes of mortality worldwide. Healthy heart valves are key for proper heart function. When these valves dysfunction, a replacement is often necessary in severe cases. The current study presents an investigation of the pulsatile blood flow through a bileaflet mechanical heart valve (BMHV) where one leaflet is healthy and
arxiv   +1 more source

Clinical results with the 31 mm CoreValve™ in large aortic annuli: The importance of implantation technique [PDF]

, 2015
The CoreValve Revalving System (CRS) (Medtronic Inc., Minneapolis, MN, USA) is currently available in four sizes: 23 mm, 26 mm, 29 mm and 31 mm.
Cammalleri, V, De Persis, F, De Vico, P, Macrini, M, Marchei, M, Muscoli, S, Romeo, F, Rubino, D, Sarkar, K, Ussia, GP   +9 more
core   +1 more source

Impact of Elevated Preprocedural Left Ventricular Filling Pressure on Prognosis of Mild Paravalvular Regurgitation Following Transcatheter Aortic Valve Replacement

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Paravalvular regurgitation (PVR) following transcatheter aortic valve replacement (TAVR) is a complication linked to poor outcomes. The prognostic impact of mild PVR, particularly in patients with elevated preprocedural left ventricular (LV) filling pressure, remains uncertain.
Shumpei Kosugi, Isamu Mizote, Daisuke Nakamura, Hiroki Sugae, Yutaka Matsuhiro, Shota Okuno, Ai Kawamura, Kizuku Yamashita, Koichi Maeda, Kazuo Shimamura, Tomoharu Dohi, Yasuharu Takeda, Yasushi Sakata   +12 more
wiley   +1 more source

Detecting total hip replacement prosthesis design on preoperative radiographs using deep convolutional neural network [PDF]

, 2019
Identifying the design of a failed implant is a key step in preoperative planning of revision total joint arthroplasty. Manual identification of the implant design from radiographic images is time consuming and prone to error. Failure to identify the implant design preoperatively can lead to increased operating room time, more complex surgery ...
arxiv   +1 more source

Two-Stream Regression Network for Dental Implant Position Prediction [PDF]

Expert Systems With Applications 2023, 2023
In implant prosthesis treatment, the design of the surgical guide heavily relies on the manual location of the implant position, which is subjective and prone to doctor's experiences. When deep learning based methods has started to be applied to address this problem, the space between teeth are various and some of them might present similar texture ...
arxiv  

Early Outcomes of Percutaneous Pulmonary Valve Implantation Using the Edwards Sapien 3 Transcatheter Heart Valve System—German Experience

The thoracic and cardiovascular surgeon, 2018
AIMS Multiple surgical revisions are often necessary in individuals with congenital heart defects affecting the RVOT or pulmonary valve. There are no multicentre data on the feasibility and safety of percutaneous pulmonary valve implantation (PPVI) using
A. Lehner, T. Daskalova, M. Ulrich, S. Fernandez, H. Schneider, G. Tarusinov, C. Kampmann, M. Fischer, A. Jakob, M. Kantzis, M. Kanaan, R. Dalla-Pozza, A. Haas   +12 more
semanticscholar   +1 more source

Restoration of a Stuck Leaflet

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Severe aortic regurgitation (AR) for a leaflet malfunction after transcatheter aortic valve implantation (TAVI) is a dreadful complication that can lead even to cardiogenic shock. New valve's design has reduced the rate of paravalvular regurgitation, however central regurgitation is still a challenging complication.
Elisa Tomarelli, Gianluca Di Pietro, Gennaro Sardella, Massimo Mancone   +3 more
wiley   +1 more source

Aortic Valve Replacement with a Conventional Stented Bioprosthesis versus Sutureless Bioprosthesis: a Study of 763 Patients

Brazilian Journal of Cardiovascular Surgery
Objective: The aim of this retrospective study was to compare early postoperative outcomes after aortic valve replacement (AVR) with sutureless bioprostheses and conventional stented bioprostheses implanted through median sternotomy.
Syed Saleem Mujtaba, Simon M. Ledingham, Asif Raza Shah, Thasee Pillay, Stephan Schueler, Stephen Clark   +5 more
doaj   +1 more source

Surgical Bailout Therapy after Implantation of a Medtronic CoreValve Bioprosthesis

Case Reports in Cardiology, 2012
Moderate-to-severe paraprosthesic leak causing hemodynamic deterioration and left ventricular remodeling can occur after transcatheter aortic valve implantation (TAVI).
Rita Calé, José Neves, Rui Teles, João Brito, Miguel Abecasis, Manuel Almeida, Tiago Nolasco, Miguel Mendes   +7 more
doaj   +1 more source

Prediction of Turbulent Shear Stresses through Dysfunctional Bileaflet Mechanical Heart Valves using Computational Fluid Dynamics [PDF]

arXiv, 2018
There are more than 300,000 heart valves implanted annually worldwide with about 50% of them being mechanical valves. The heart valve replacement is often a common treatment for severe valvular disease. However, valves may dysfunction leading to adverse hemodynamic conditions.
arxiv