Millennium Pharmaceuticals Incorporated
Not right for everyone

WHEN coronary arteries grow dangerously narrow, the solution — increasingly — is to prop open the walls with a device called a drug-eluting stent. Now two new studies are adding fuel to a growing debate about whether these stents are being overused, with ill consequences for patients. The studies, both published in the May 9 issue of the Journal of the American Medical Assn., included large groups of patients who were treated for narrowing in their coronary arteries with the stents, which are tiny drug-coated cylinders used to prop open blocked arteries. The drugs are released over time and help prevent blockages from scarring that occurred in 20% of patients following...