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Heart to Heart: Discovery of a Novel Genetic Mutation Linked to Life-threatening Arrhythmias in Structurally Normal Hearts

There are arrhythmias, and then there are arrhythmias.  Dr. Jim W. Cheung is currently at the forefront of studying a serious arrhythmia known as short-coupled torsade de pointes or PMVT (polymorphic ventricular tachycardia), which can lead to sudden death.  Torsade de pointes is a French term that describes the characteristic appearance of the rapid rhythm as seen on EKG.   Most people who have life-threatening cardiac arrhythmias often have some type of structural heart disease. However,...

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3D View of Heart Tissue Opens New Window on Assessment and Treatment of Mitral Regurgitation

Mitral regurgitation (MR) is among the most common causes of valvular heart disease, affecting over 2 million people in the United States. Left untreated,  MR,  can cause serious consequences, including heart failure, arrhythmias, and even death.  MR involves leakiness of one of the heart’s critical valves, the mitral valve, which causes the blood to flow backwards rather than forward.  The good news is that there are effective treatments for MR, including valve replacement, angioplasty,...

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101 Year-Old Patient Among Many Benefiting from Minimally Invasive Procedure (TAVR) for Narrowed Aortic Valve

Dr. S. Chiu Wong has added an exciting new technology to his roster of minimally invasive tools. TAVR (Transcatheter Aortic-Valve Replacement) involves a balloon and a specially constructed stent (containing a tissue valve) to replace the aortic valve in the heart when it no longer functions properly due to narrowing.  This narrowing is known as aortic stenosis. The stent is made of a chromium-cobalt based alloy similar to the stents used for coronary arteries. However, the procedure is more...

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