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Heart Disease Health Center

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Prompt Surgery May Be Best for Heart Valve Leak

Study findings challenge policy of 'watchful waiting' for people with mitral valve regurgitation

WebMD News from HealthDay

By Dennis Thompson

HealthDay Reporter

TUESDAY, Aug. 13 (HealthDay News) -- People with a leaky heart valve will live longer if surgeons repair the leak promptly, even if the patient isn't feeling any symptoms, a new study finds.

Doctors usually employ a strategy of "watchful waiting" when treating healthy people who have mitral valve regurgitation, which is backflow leakage through the valve that separates the two chambers on the left side of the heart.

"Traditionally, physicians are very reluctant to send patients for surgery, particularly for major operations like open heart surgery," said Dr. Robert Boova, chief of cardiovascular surgery at Jeanes Hospital in Philadelphia. "If they have minimal or no symptoms, physicians don't recommend surgery for them."

However, a 25-year Mayo Clinic study of more than 1,000 heart valve patients has determined that prompt repair of the heart valve can drastically improve survival rates. The findings are published Aug. 14 in the Journal of the American Medical Association.

Patients without symptoms who received early repair of their leaking heart valve had a 60 percent reduced risk of heart failure, and their five-year mortality rate improved by about half, the researchers found.

"We didn't expect the differences to be that striking," said Dr. Rakesh Suri of the Mayo Clinic College of Medicine in Rochester, Minn. "We were rather shocked to see they were."

The study followed 1,021 patients with mitral regurgitation who did not have symptoms of heart failure. Doctors placed 575 patients on "watchful waiting," while 446 underwent mitral valve surgery within three months of detection.

The 10-year survival rate of people who had surgery was 86 percent, compared to 69 percent for people who did not get immediate surgery. The risk of heart failure also was lower -- a 7 percent risk for those with early surgery versus 23 percent for those placed on observation.

The mitral valve leak is doing damage to the heart even if patients aren't showing typical symptoms such as fatigue or shortness of breath, Suri said. The leak forces the heart to pump harder to circulate blood throughout the body, setting the stage for heart disease and high blood pressure.

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