Abstract
Stent placement for treating superficial femoral artery (SFA) lesions has been approved. The Zilver PTX stent, a drug-eluting stent (DES) for treating SFA lesions, has been available in Japan since 2012. However, the penetration rate of this DES has not yet been reported. This prospective multicenter registry study enrolled 314 patients (354 limbs) to be treated by stent placement in 2014 (UMIN000011551). The primary endpoint was the measurement of the penetration rate of the DES. The secondary endpoints were measuring the freedom from restenosis, freedom from target lesion revascularization (TLR), freedom from major adverse limb event (MALE), and the survival rate at 12 months postoperatively. Female patients comprised 28% participants. The mean age was 73.1 ± 9.2 years. A total of 56% patients had diabetes mellitus (DM), 36% patients were receiving hemodialysis, and 30% used cilostazol at baseline. The mean lesion length was 156 ± 101 mm, and the percentage of TASC II C/D lesions was 58%. Critical limb ischemia (CLI) was observed in 32% limbs. The penetration rates of the Zilver PTX stent were only 8%. The primary patency rate was similar between DES and bare-metal stents (BMS) at 12 months postoperatively (77 vs. 84%, p = 0.52). In this study, the rates of freedom from restenosis, freedom from TLR, freedom from MALE, and the survival rate at 12 months postoperatively were 83, 86, 85, and 89%, respectively. The penetration rate of a first-generation DES placement for treating SFA lesions is low in Japan. On the other hand, BMS is well utilized and its primary patency is acceptable.
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Mori, S., Hirano, K., Yamauchi, Y. et al. Penetration rate of the placement of a drug-eluting stent for the treatment of superficial femoral artery lesions in Japan. Heart Vessels 32, 1093–1098 (2017). https://doi.org/10.1007/s00380-017-0982-7
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DOI: https://doi.org/10.1007/s00380-017-0982-7