Results 81 to 90 of about 121,770 (258)

Trial‐Based Hemolysis Modeling to Investigate Operating Modes of Continuous‐Flow LVADs

Artificial Organs, EarlyView.
This work presents a methodology for determining online‐capable hemolysis models for continuous‐flow LVADs, derived from in vitro trials. The models are based on fitting a modified power law and applying the Lagrangian approach. They assist clinicians in selecting treatment strategies that minimize hemolysis, as demonstrated with the Sputnik1 LVAD ...
Patrick Borchers, Steffen Leonhardt, Marian Walter   +2 more
wiley   +1 more source

In Vitro Calcification Evaluation of Polycarbonate Urethane—Impact of Production Processes

Artificial Organs, EarlyView.
The study shows that hot pressing induces chemical changes in PCU, promoting calcification, while solution‐cast patches remain unaffected. ABSTRACT Background Heart valve diseases remain a leading cause of death in industrialized nations. Polycarbonate urethane (PCU) is a promising material for heart valve prostheses due to its biocompatibility and low
Jan Ritter, Christoph Schmitz, Stephan Rütten, Abdelhafid Aqil, Cécile Oury, Thomas Schmitz‐Rode, Willi Jahnen‐Dechent, Ulrich Steinseifer, Johanna C. Clauser   +8 more
wiley   +1 more source

Design, manufacturing and testing of a green non-isocyanate polyurethane prosthetic heart valve.

Biomaterials Science
The sole effective treatment for most patients with heart valve disease is valve replacement by implantation of mechanical or biological prostheses. However, mechanical valves represent high risk of thromboembolism, and biological prostheses are prone to
Sofia F Melo, Alicia Nondonfaz, A. Aqil, A. Pierrard, A. Hulin, C. Delierneux, Bartosz Ditkowski, Maxime Gustin, M. Legrand, B. Tullemans, S. Brouns, A. Nchimi, R. Carrus, Astrid Dejosé, Johan W. M. Heemskerk, Marijke J. E. Kuijpers, Jan Ritter, U. Steinseifer, J. Clauser, Christine Jérôme, Patrizio Lancellotti, C. Oury   +21 more
semanticscholar   +1 more source

The Immune Response in In Situ Tissue Engineering of Aortic Heart Valves

, 2013
The gold standard for treatment of advanced heart valve disease is surgical heart valve re‐ placement. None of the currently available mechanical and bioprosthetic heart valve substi‐ tutes resembles normal heart valve function.
S. Loon, A. Smits, A. Driessen-Mol, F. Baaijens, C. Bouten   +4 more
semanticscholar   +1 more source

Hydraulic In Vitro Characterization of MR‐Conditional Blood Pumps

Artificial Organs, EarlyView.
Cardiac surgery in neonates requires close placement of cardiopulmonary bypass machines due to limited blood volume, complicating MR compatibility. This study introduces three MR‐conditional blood pump prototypes. None interfered with MRI imaging, though RF‐related sensor effects remain untested.
Dominik T. Schulte, Marcel Renggli, Henning Richter, Francesca Del Chicca, Michael Hofmann, Martin O. Schmiady, Marianne Schmid Daners   +6 more
wiley   +1 more source

Antithrombotic therapy in patients with prosthetic heart valves

Revista Cubana de Cardiología y Cirugía Cardiovascular, 2014
The thromboembolic events are still an important complication in patients with substitution of any of the heart valves in spite of the advances obtained in the design of prostheses.
Fidel Manuel Cáceres Lóriga, Horacio Pérez López, Karel Morlans Hernández   +2 more
doaj  

Inflammatory Cytokines as Early Predictors of Weaning Failure From Extracorporeal Life Support

Artificial Organs, EarlyView.
Levels of IL‐8 and IL‐6 and their dynamics are reliable early predictors of ECLS weaning failure. ABSTRACT Background Weaning from extracorporeal life support (ECLS) in patients with refractory shock still remains a complex decision. Despite considerable advances in ECLS management, reliable biomarkers to predict weaning success are still not available.
Kostiantyn Kozakov, Alois Philipp, Maik Foltan, Anton Heller, Dzmitry Turtsevich, Christian Schach, Peter‐Paul Ellmauer, Walter Petermichl, Bernhard Flörchinger, Christof Schmid, Simon Schopka, Zdenek Provaznik   +11 more
wiley   +1 more source

Hemocompatibility Outcomes After Aspirin Withdrawal in Long‐Term HeartMate 3 Left Ventricular Assist Device Patients on Vitamin K Antagonists

Artificial Organs, EarlyView.
Aspirin discontinuation in long‐term, stable Heart Mate 3 LVAD patients maintained on Vitamin K antagonists did not increase hemocompatibility‐related adverse events. These findings support the safety of simplified antithrombotic therapy and extend randomized evidence for aspirin avoidance to the long‐term management of Heart Mate 3 recipients ...
Melanie Arnreiter, Barbara Karner, Hebe Al Asadi, Christina Abd El‐Malak, Christiane Marko, Daniel Zimpfer, Julia Riebandt, Roxana Moayedifar, Thomas Schlöglhofer   +8 more
wiley   +1 more source

Percutaneous Versus Surgical Cannulation for Femoro‐Femoral Venoarterial Extracorporeal Membrane Oxygenation: A Retrospective Cohort Study on Cannulation‐Related Complications

Artificial Organs, EarlyView.
Percutaneous femoro‐femoral V‐A ECMO cannulation was associated with more than a two‐fold lower risk of site bleeding and nearly a six‐fold lower risk of infection compared with surgical cut‐down, with no difference in limb ischemia. Absence of distal perfusion catheterization and larger arterial cannula size were additional modifiable ischemia risk ...
Axel Dimberg, Magnus Dalén, Anders Franco‐Cereceda, Thomas Fux   +3 more
wiley   +1 more source

Avaliação clínica e ecocardiográfica de pacientes submetidos a implante de bioprótese mitral com preservação da valva natural Clinical and echocardiography evaluation of patients submitted to mitral bioprosthesis implantations with preservation of their native valves

Brazilian Journal of Cardiovascular Surgery, 1990
O objetivo deste trabalho é apresentar os resultados pós-operatórios preliminares de 16 pacientes submetidos a implante de bioprótese valvular de pericárdio bovino com preservação de suas valvas naturais, operados seqüencialmente no período de março a ...
Altamiro Ribeiro Dias, Luiz F. P Assumpção, Volnei Castanho, Sérgio Mattos Lomelino, Luiz Abba Brito, Osmar Samuel, Caio Cesar J Medeiros, Cesar A. M Catani, José R Parga Filho, José Antônio Chinelato, Adib D Jatene   +10 more
doaj