Dr. Shing-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...
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