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Vascular and Endovascular Surgery
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Current Status of Intravascular Stents as Delivery Devices to Prevent Restenosis

Benjamin J. Pearce, MD

Section of vascular Surgery, University of Chicago Hospitals, Chicago, IL

James F. McKinsey, MD

Section of vascular Surgery, University of Chicago Hospitals, Chicago, IL; Department of Surgery, Director of Endovascular Services, University of Chicago Hospitals, 5841 S. Maryland Ave. MC 5028, Chicago, IL 60637

The acute technical success of percutaneous transluminal angioplasty (PTA) has been improved with the use of intravascular stents. However, stent placement has led to the development of an increased myointimal hyperplastic response leading to late reduction in vessel lumen. Restenosis (≥50% reduction in reference lumen diameter) rates for coronary angioplasty and stenting are reported between 20% and 50% at 1 year. Several studies are currently evaluating novel delivery of antiproliferative agents to prevent neointimal hyperplasia. The authors review the mechanism of neointimal hyperplasia as it relates to stent placement and discuss recent and ongoing trials evaluating intravascular brachytherapy and drug-eluting stent technology in the inhibition of restenotic lesions.

Vascular and Endovascular Surgery, Vol. 37, No. 4, 231-237 (2003)
DOI: 10.1177/153857440303700401
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