1.   Heart valves are vital for transplantation into children born with valve defects and adults with diseased or worn valves.

2.   A recent study found no evidence that Redux is a cause of valve defects.

3.   Doctors discovered a heart valve defect and called the pregnancy high-risk.

4.   If that proportion holds up in larger studies, it could translate to hundreds of thousands of unsuspecting patients with valve defects of unknown significance.

5.   Last summer, the first hints of a new danger arose when doctors at the Mayo Clinic reported that the drugs might cause heart valve defects.

6.   The agency is asking doctors to look for and report any patients who are taking the drug combination and who develop the valve defects or primary pulmonary hypertension.

7.   The government then asked doctors to report other cases of heart valve defects in people taking diet pills.

8.   The Food and Drug Administration sent out a letter to thousands of doctors advising them of the valve defects but not telling doctors to take patients off the drugs.

9.   Unlike those drugs, Meridia has not been associated with either valve defects or a fatal heart condition.