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Table 2: Review of previous studies on stent angioplasty of stenotic lesions of the vertebral artery ostium
Author No. Patients No. Treated Stenoses Rate of Complication (%) Follow-Up Morbidity/Mortality Related to the Treated Stenosis in the Follow-Up Period (%)
Technical Clinical Period (months) No. Stenoses Rate of Significant Restenosis (%) Rate of Stent Occlusion (%)
Bare metal stents 
    Chastain et al⁵ 50 55 2 0 6 49 10 0 4/0
    Albuquerque et al⁷ 33 33 3 0 16 30 43 0 0/0
    Lin et al²² 58 67 0 7 11 32 25 1 3/0
    Weber et al¹⁰ 38 38 5 2 11 26 36 0 2/0
    SSYLVIA Study¹¹ 6 6 – –^* 6 6 67 0 –^*
    Cloud et al²³ 14 14 0 0 20 11 9 0 0/0
    Lin et al²⁴ 80 90 0 0 12 40 21 (short stenoses)29 (medium length) 50 (long stenoses) 0 0/0
    Akins et al¹² 7 7 0 0 36 7 43 1 0/0
    Taylor et al²⁵ 44 48 0 0 7 48 48 0 0/0
Drug-eluting stents 
    Lin et al¹³ 11 11 0 0 4 and 8 2 0 0 0/0
    Lugmayr et al¹⁴ 7 8 0 0 6 8 63 0 28/0
    Gupta et al¹⁵ 27 27 0 2 4 27 7 0 0/0
    Akins et al¹² 5 5 0 0 17 5 0 0 0/0
    Edgell et al¹⁶ 5 5 0 0 15 5 0 0 1/0
    Our data 48 52 0 0 7 52 12 0 0/0
Note:—SSYLVIA indicates Stenting of Symptomatic Atherosclerotic Lesions in the Vertebral or Intracranial Arteries.
* The exact location of the treated stenoses responsible for the clinical complications is not given specifically in the article.