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(Circulation. 2007;116:285-292.)
© 2007 American Heart Association, Inc.
Interventional Cardiology |
From the Hamburg University Cardiovascular Center, Prof Mathey, Prof Schofer, & Partners, Hamburg, Germany (H.K., M.S., T.T.); DRK-Kliniken Berlin Westend, Institut für Klinische Radiologie, Berlin, Germany (H.J.S.); University of Leipzig Heart Center, Leipzig, Germany (D.S.); Vascular Center Berlin, Evangelisches Krankenhaus Königin Elisabeth Herzberge, Berlin, Germany (K.-L.S.); Department of Angiology, Vienna Medical University, Vienna, Austria (E.M.); Department of Cardiovascular and Thoracic Surgery, Imelda Hospital, Bonheiden, Belgium (P.P.); Department of Vascular Surgery, AZ Sint-Blasius, Dendermonde, Belgium (M.B.); Department of Diagnostic Radiology, University of Tübingen, Tübingen, Germany (G.T.); Department of Cardiology, Ospedale di Mirano, Mirano, Italy (B.R.); Inselspital, University of Bern, Bern, Switzerland (F.M.); and Department of Angiology, Herz-Zentrum Bad Krozingen, Bad Krozingen, Germany (K.B., T.Z.).
Correspondence to Hans Krankenberg, MD, Hamburg University Cardiovascular Center, Prof Mathey, Prof Schofer, & Partners, Wördemanns Weg 25-27, D-22527 Hamburg, Germany. E-mail krankenberg{at}herz-hh.de
Received January 9, 2007; accepted May 11, 2007.
Background Endoluminal treatment of superficial femoral artery lesions is a matter of controversy. The present study was designed to investigate the impact of nitinol stenting of superficial femoral artery lesions with a maximum length of 10 cm on restenosis and clinical outcomes at 1 year.
Methods and Results Two hundred forty-four patients (168 men; 66±9 years) with a single superficial femoral artery lesion and chronic limb ischemia were randomized to implantation of a single Bard Luminexx 3 stent (123 patients) or stand-alone percutaneous transluminal angioplasty (PTA) (121 patients). Mean lesion length was 45 mm. Technical success (residual stenosis <50% for PTA, <30% for stenting) was achieved in 96 patients assigned to PTA (79%) and 117 patients assigned to stenting (95%); 13 PTA group patients (11%) "crossed over" to stenting. At 1 year, the primary end point of ultrasound-assessed binary restenosis was reached in 39 of 101 PTA group patients (38.6%) and 32 of 101 stent group patients (31.7%; absolute treatment difference, 6.9%; 95% CI, 19.7% to 6.2%; P=0.377). Target lesion revascularization rates at 1 year were 18.3% and 14.9%, respectively (absolute treatment difference, 3.3%; 95% CI, 13.0% to 6.4%; P=0.595). No statistically significant difference between treatment groups was observed at 12 months in the improvement by at least 1 Rutherford category of peripheral arterial disease.
Conclusions In the present study of patients with short superficial femoral artery lesions, the hypothesized absolute difference of 20% in binary restenosis at 1 year between the implantation of a single Luminexx nitinol stent and stand-alone PTA could not be demonstrated. A smaller difference requiring a larger trial might have been missed.
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