The move to stents
has paid dividends, but within a few months after they are implanted, about 20 percent of bare-metal stents
Altogether, the 12 patients received 21 stents
Curiously, 12 people getting an endarterectomy had subsequent heart attacks, compared with 4 in the group getting stents
, possibly because of greater physical stress during endarterectomy, comments Jack V.
Moses and his colleagues randomly assigned 1,058 heart patients to receive uncoated stents
or drag-coated devices after their artery-widening procedures.
trigger immune inflammation, and up to a third of them reclog--a process called restenosis--within a few months after their insertion.
A few years ago, physicians inserting stents
administered massive doses of heparin and other blood thinners to prevent blockages, but the drugs caused bleeding internally and at the entry site for the catheter carrying the stent