Status of Drug-Eluting Coronary Stents

摘要

The introduction of percutaneous transluminal coronary angioplasty (PTCA) in the late1970s provided a new, non-surgical approach to the treatment of selected patients with symptomatic coronary artery disease. Throughout the next decade, adjunctive technologies, in- cluding rotational and directional atherectomy, expanded the range of coronary lesions which could be ap- proached percutaneously. PTCA con- tinued to be limited, however, by the problems of abrupt vessel closure and late restenosis.