Palmaz stent deployment for subclavian and brachiocephalic arterial occlusive disease. Factors predictive of restenosis

Results of Transradial Subclavian Artery Percutaneous Interventions After Bilateral or Single Access

Percutaneous treatment of subclavian artery stenosis or occlusion has become more popular compared with surgical correction. We compared the early and late results of subclavian artery stenting with bilateral or single transradial access. From 2010 to 2015, we recruited 54 consecutive patients. In 35 cases, we used bilateral access, and in 19 cases, ipsilateral single access was used. Left subclavian artery was the culprit vessel in 72% of cases. There were more chronic total occlusions in the bilateral group (77% vs 21%, p = 0.0001). Transradial-only approach was used in all cases, except in 2 cases in the bilateral group where crossover to femoral access was required. Stents were implanted in 94% in bilateral group and 84% in single group (p = 0.47). Procedure duration (40 [35 to 60] vs 20 [15 to 30] minutes), contrast volume (200 [200 to 350] vs 150 [100 to 200] ml and fluoroscopy time (20 [12 to 30] vs 8 [4 to 11] minutes) were higher in bilateral group (all p values <0.0001). Procedural success was 96%. Overall, we observed three <5-cm hematomas and 3 asymptomatic radial artery occlusions at hospital discharge. After successful procedure, blood pressure equalized in 94% in bilateral group and 100% in single group (p = 0.54). Major cardiovascular and cerebrovascular event-free survival up to 5 years was 97% in bilateral group compared with 84% in single group (p = 0.12). Subclavian artery patency at late follow-up was 91% in bilateral group and 95% in single group (p = 1.00). Using single or bilateral transradial approach, subclavian artery lesions or occlusions can be effectively and safely treated without the risks of femoral or brachial access.