Acute biological mitral valve thrombosis after the left atrial venting in a patient with a venoarterial extracorporeal membrane oxygenator

2021 ◽  
Author(s):  
Kyo S. Lee ◽  
Yochun Jung ◽  
In S. Jeong ◽  
Sang Y. Song ◽  
Kook J. Na ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Left Atrial ◽  
Membrane Oxygenator ◽  
Extracorporeal Membrane Oxygenator ◽  
Valve Thrombosis

An infrequent complication of a not so infrequent disease. Hit by HIT

2018 ◽  
Vol 27 (2) ◽  
pp. 124-126 ◽  
Author(s):  
Elena Sandoval ◽  
María Ascaso ◽  
Eduard Quintana ◽  
Daniel Pereda
Keyword(s):  
Membrane Oxygenator ◽  
Heparin Induced Thrombocytopenia ◽  
Vascular Thrombosis ◽  
Sudden Drop ◽  
Coronary Syndrome ◽  
Extracorporeal Membrane Oxygenator ◽  
Tissue Valve ◽  
Valve Thrombosis ◽  
Heparin Exposure ◽  
Uncommon Complication

Heparin-induced thrombocytopenia is not uncommon in cardiac surgery. Thrombosis is the most frequent complication. A 77-year-old man suffered cardiac arrest due to right coronary emboli. Transesophageal echocardiography revealed tissue valve thrombosis. He required support with an extracorporeal membrane oxygenator that also thrombosed. Heparin-induced thrombocytopenia was diagnosed, and anticoagulation was switched to argatroban. Heparin- induced thrombocytopenia normally presents as vascular thrombosis. In this case, the first symptom was tissue valve thrombosis causing an acute coronary syndrome. It is not an uncommon complication and should be considered if unexpected thrombosis and a sudden drop in platelet count develops after heparin exposure.

How to Do It: Importance of Left Atrial Side Retraction in Robotic and Minimally Invasive Mitral Valve Surgery

2008 ◽  
Vol 11 (5) ◽  
pp. E270-E271 ◽  
Author(s):  
Norihiko Ishikawa ◽  
You Su Sun ◽  
L. Wiley Nifong ◽  
Go Watanabe ◽  
W. Randolph Chitwood
Keyword(s):  
Mitral Valve ◽  
Minimally Invasive ◽  
Left Atrial ◽  
Mitral Valve Surgery ◽  
Valve Surgery

scholarly journals Fluid–structure interaction in a fully coupled three-dimensional mitral–atrium–pulmonary model

2021 ◽  
Author(s):  
Liuyang Feng ◽  
Hao Gao ◽  
Nan Qi ◽  
Mark Danton ◽  
Nicholas A. Hill ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Left Atrium ◽  
Left Atrial ◽  
Left Atrial Appendage ◽  
Pulmonary Veins ◽  
Three Dimensional ◽  
Left Heart ◽  
Structure Interaction ◽  
Acute Mitral Regurgitation ◽  
Reversal Flow

AbstractThis paper aims to investigate detailed mechanical interactions between the pulmonary haemodynamics and left heart function in pathophysiological situations (e.g. atrial fibrillation and acute mitral regurgitation). This is achieved by developing a complex computational framework for a coupled pulmonary circulation, left atrium and mitral valve model. The left atrium and mitral valve are modelled with physiologically realistic three-dimensional geometries, fibre-reinforced hyperelastic materials and fluid–structure interaction, and the pulmonary vessels are modelled as one-dimensional network ended with structured trees, with specified vessel geometries and wall material properties. This new coupled model reveals some interesting results which could be of diagnostic values. For example, the wave propagation through the pulmonary vasculature can lead to different arrival times for the second systolic flow wave (S2 wave) among the pulmonary veins, forming vortex rings inside the left atrium. In the case of acute mitral regurgitation, the left atrium experiences an increased energy dissipation and pressure elevation. The pulmonary veins can experience increased wave intensities, reversal flow during systole and increased early-diastolic flow wave (D wave), which in turn causes an additional flow wave across the mitral valve (L wave), as well as a reversal flow at the left atrial appendage orifice. In the case of atrial fibrillation, we show that the loss of active contraction is associated with a slower flow inside the left atrial appendage and disappearances of the late-diastole atrial reversal wave (AR wave) and the first systolic wave (S1 wave) in pulmonary veins. The haemodynamic changes along the pulmonary vessel trees on different scales from microscopic vessels to the main pulmonary artery can all be captured in this model. The work promises a potential in quantifying disease progression and medical treatments of various pulmonary diseases such as the pulmonary hypertension due to a left heart dysfunction.

scholarly journals EFFECT OF TRANSCATHETER MITRAL VALVE REPAIR ON LEFT ATRIAL KINETIC ENERGY IN CHRONIC MITRAL REGURGITATION

2021 ◽  
Vol 77 (18) ◽  
pp. 1756
Author(s):  
Michael Biersmith ◽  
Thura Harfi ◽  
David Orsinelli ◽  
Scott Lilly ◽  
Konstantinos Boudoulas
Keyword(s):  
Mitral Valve ◽  
Kinetic Energy ◽  
Mitral Regurgitation ◽  
Mitral Valve Repair ◽  
Left Atrial ◽  
Valve Repair ◽  
Transcatheter Mitral Valve Repair
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