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Sustained safety and effectiveness of paclitaxel-eluting stents for femoropopliteal lesions: 2-year follow-up from the zilver PTX randomized and single-arm clinical studies

  • Michael D. Dake
  • , Gary M. Ansel
  • , Michael R. Jaff
  • , Takao Ohki
  • , Richard R. Saxon
  • , H. Bob Smouse
  • , Scott A. Snyder
  • , Erin E. O'Leary
  • , Gunnar Tepe
  • , Dierk Scheinert
  • , Thomas Zeller

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives A prospective, multinational randomized controlled trial (RCT) and a complementary single-arm study evaluated the 2-year safety and effectiveness of a paclitaxel-coated drug-eluting stent (DES) in patients with superficial femoral artery lesions. The RCT compared the DES with percutaneous transluminal angioplasty (PTA) and provisional bare-metal stent (BMS) placement. Background Local drug delivery for superficial femoral artery lesions has been investigated with the intent of limiting restenosis similarly to DES for the coronary arteries. One-year outcomes of DES in the superficial femoral artery are promising, but longer-term benefits have not been established. Methods In the RCT, patients were randomly assigned to primary DES implantation (n = 236) or PTA (n = 238). Acute PTA failure occurred in 120 patients, who underwent secondary randomization to DES (n = 61) or BMS (n = 59) placement. The single-arm study enrolled 787 patients with DES treatment. Results Compared with the control group, the primary DES group demonstrated significantly superior 2-year event-free survival (86.6% vs. 77.9%, p = 0.02) and primary patency (74.8% vs. 26.5%, p < 0.01). In addition, the provisional DES group exhibited superior 2-year primary patency compared with the provisional BMS group (83.4% vs. 64.1%, p < 0.01) and achieved higher sustained clinical benefit (83.9% vs. 68.4%, p = 0.05). Two-year freedom from target lesion revascularization with primary DES placement was 80.5% in the single-arm study and 86.6% in the RCT. Conclusions Two-year outcomes with the paclitaxel-eluting stent support its sustained safety and effectiveness in patients with femoropopliteal artery disease, including the long-term superiority of the DES to PTA and to provisional BMS placement. (Evaluation of the Zilver PTX Drug-Eluting Stent in the Above-the-Knee Femoropopliteal Artery; NCT00120406; Zilver® PTX™ Global Registry; NCT01094678).

Original languageEnglish (US)
Pages (from-to)2417-2427
Number of pages11
JournalJournal of the American College of Cardiology
Volume61
Issue number24
DOIs
StatePublished - Jun 18 2013
Externally publishedYes

Keywords

  • angioplasty
  • drug-eluting stent(s)
  • paclitaxel-eluting stent(s)
  • peripheral arterial disease

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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