In a substudy of CREST trial data presented at the SCAI 2013 Scientific Sessions, researchers found that carotid artery stenting followed by balloon angioplasty cut restenosis risk by 64% but carried a higher risk for periprocedural stroke. Patients who had post-stent deployment angioplasty faced a 3.7% chance of restenosis at two years compared with the group that received balloon angioplasty ahead of stenting. However, 19 of 20 patients who had periprocedural strokes were in the post-stent angioplasty group.

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