Abstract
Percutaneous balloon angioplasty for subclavian stenosis achieves satisfactory procedural success rates except for total occlusion. Seven lesions in six consecutive patients who underwent stenting for subclavian total occlusion were reviewed to evaluate the feasibility and efficacy of endovascular stenting. Six lesions were treated using Palmaz stents, and one with the combination of a Palmaz and a SMART stent. Procedural success (residual stenosis < 30%) was achieved for all lesions. The only neurological complication was an embolism in a branch of the posterior cerebral artery, which resulted in homonymous hemianopsia. Follow-up angiography over 6 months after the stenting for five lesions found one in-stent re-occlusion and one ostial restenosis due to elastic recoil. No patient had any new or recurrent symptoms except for recurrent upper limb ischemia due to the case of in-stent re-occlusion during the clinical follow-up period of 1 to 52 months (mean 16.6 months). This complication was resolved by a second treatment. Our limited experience suggests that stenting can redilate even cases of angiographical total occlusion of the proximal segment of the subclavian artery.
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