Cardiac Catheterizations: Too Many Performed?
A large percentage of patients without known heart disease who undergo invasive cardiac catheterization to check for dangerous artery blockages do not have them, a new study suggests

New Plavix Warning: Lack of Effect in Many People
The anti-clotting drug Plavix will get a new "black box" label warning that normal doses don't work for 2% to 14% of patients.