In this Monday, March 11, 2013 photo, Atlanta cardiologist Dr. Spencer King 

In this Monday, March 11, 2013 photo, Atlanta cardiologist Dr. Spencer King demonstrates how a catheter is used to repair a diseased heart valve, at an American College of Cardiology conference in San Francisco. Many problems that used to require open-heart surgery now can be treated with minimally invasive procedures. (AP Photo/Jeff Chiu)
Associated Press
In this Monday, March 11, 2013 photo, Atlanta cardiologist Dr. Spencer King demonstrates how a catheter is used to repair a diseased heart valve, at an American College of Cardiology conference in San Francisco. Many problems that used to require open-heart surgery now can be treated with minimally invasive procedures. (AP Photo/Jeff Chiu)
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