抄録
Twenty-five lesions of 21 patients with atherosclerotic vertebrobasilar artery stenosis were treated with percutaneous transluminal angioplasty (PTA). These lesions included the vertebral artery ostium (VAO) in 13 lesions, the first portion of vertebral artery (V1) in 1, second portion (V2) in 1, forth portion (V4) in 8, and basilar artery in 2. Patients were followed angiographically at 3-6 and 12 months after PTA. The initial success rate was 92%, but restenosis occurred in 38% (8/21) of lesions successfully treated with first PTA. Six lesions with restenosis (2 VAO and 4 V4 lesions) were treated with second PTA, and the restenosis was recognized in 1. In total, 86% (18/21) of lesions were free of restenosis after the first or second PTA. Wall dissections were observed in 5 lesions (3 small intimal flaps and 2 pseudolumens). Based on our results, indications of PTA for vertebrobasilar artery stenosis are discussed.
