Major study casts doubt on need for many heart procedures
PHILADELPHIA — People with severe but stable heart disease from clogged arteries may have less chest pain if they get a procedure to improve blood flow rather than just giving medicines a chance to help, but it won't cut their risk of having a heart attack or dying over the following few years, a big federally funded study found.
There might even be harm: To doctors' surprise, study participants who had a procedure were more likely to suffer a heart problem or die over the next year than those treated with medicines alone. That's either a bypass — open-heart surgery to detour around blockages — or angioplasty, in which doctors push a tube through an artery to the clog, inflate a tiny balloon and place a stent, or mesh scaffold, to prop the artery open.
The others were treated as many people with abnormal stress tests are now: They were taken to cardiac catheterization labs for angiograms. The procedure involves placing a tube into a major artery and using special dyes to image the heart's blood vessels. Blockages were treated right away, with angioplasty in three-fourths of cases and a bypass in the rest.
Dr. Alice Jacobs, a Boston University cardiologist who led a treatment-guidelines panel a few years ago, said any placebo effect fades with time, and people with a lot of chest pain that's unrelieved by medicines still may want a procedure.
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