Bare Stents + Drug-Coated Balloons = Clotting and Restenosis Solution?
German researchers have found that inflating drug-coated balloons inside arteries to medicate blood vessels affected by restenosis may be a more safe and effective method that implanting drug-eluting stents, Bloomberg News reports.
November 14, 2006
The study, published in the New England Journal of Medicine and presented at the American Heart Association meeting yesterday, found that only 5% of patients treated with drug-coated balloons showed excessive scarring afterwards, compared with 43% of patients treated with uncoated balloons. The balloons were coated with paclitaxel and were threaded into reblocked coronary arteries with a bare-metal stent present. The balloons were then expanded and pressed against the vessel wall for one minute to apply the drug. Though about 90% of the drug was washed downstream by blood, it was still a stronger and more evenly-distributed dose than what can be given by drug-eluting stents, the researchers said. If these initial findings are confirmed in larger studies, bare-metal stents might come back in favor.
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