Safety of Slender 5Fr Transradial Approach for Carotid Artery Stenting With a Novel Nitinol Double-Layer Micromesh Stent.

We aimed to evaluate the feasibility and safety of performing percutaneous carotid stent implantation with a newly designed double-layer stent using transradial slender 5Fr techniques. We recruited 10 consecutive patients who underwent percutaneous carotid stenting using nitinol double-layer micromesh (Roadsaver) stents. Mean age of patients was 66 years. Seven patients had ≥2 high-risk criteria according to SAPPHIRE classification. Indication was neurologic symptoms in 7 and severe lesion without symptoms in 3 cases. Type 2 aortic arch was present in 8 patients and type 1 in 2 patients. Access was right radial artery in 9 cases and right ulnar artery in 1 case. Right carotid artery was stented in 4 cases and left carotid artery in 6 cases. Embolic protection device (EPD) was used in 6 cases. Nine stents were successfully delivered using 5Fr destination sheath (n = 7) or shuttle sheath (n = 2), and 1 was implanted using Mo-Ma 8Fr proximal EPD. Procedural success was obtained in all cases with only 1 case of temporary vasospasm due to distal EPD. Total procedural time was 21 minutes (13 to 30 minutes) with filter time of 5 ± 1 minutes. Fluoroscopy time was 8 minutes (5 to 12 minutes) and contrast volume was 150 ml (100 to 200 ml). Hospital stay was 1 ± 1 day with 4 patients discharged on the same day of the procedure. Using right transradial approach and slender 5Fr techniques, this new double-layer micromesh stent can be implanted in left and right carotid arteries with promising results.