Drug-eluting stents and drug-coated balloons in peripheral artery disease.

Restenosis remains a major problem after angioplasty in peripheral artery disease despite stenting. It occurs in 30 - 50% / year depending on lesion localization and characteristics. One main reason for restenosis is neointimal hyperplasia, which can be suppressed by the topical administration of antiproliferative drugs. In percutaneous coronary intervention the concept of "local drug delivery" has been used for almost a decade with great success. In recent years, drug-eluting stents and drug coated balloons have also been increasingly used in the treatment of peripheral arterial disease as a consequence of positive results of clinical trails. The following article is an overview of the currently available data of completed trials, ongoing and planned studies. Evidence suggests that "drug-coating technology" is reliable, safe and efficient in reducing the target lesion revascularization and binary restenosis rate significantly. With regard to limb salvage and mortality in critical limb ischemia, there is no benefit shown in current published studies.