Harvard Heart Letter

Breakthrough in mitral valve treatment

When the structures surrounding the mitral valve deteriorate and loosen, the valve is no longer able to open and close properly. As a result, blood backs up in the heart and lungs, causing severe fatigue with minimal activity. New devices are enabling doctors to repair the mitral valve structures without the need for open- heart surgery. One of the many devices in development, MitraClip, is now being tested in clinical trials in the United States.  
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