Angiographic results of the cobalt chromium Vision and Mini-Vision stents.

BACKGROUND: Drug-eluting stents (DES) have been shown to reduce repeat revascularizations compared with their bare-metal stent (BMS) platforms. Modern BMS may be associated with better angiographic results compared with the older BMS platforms. In the Basel Stent Kosten Effektivitats Trial (BASKET), target vessel revascularization after six months was nonsignificantly different between DES and BMS with clinical follow-up.
OBJECTIVES: To evaluate angiographic results of the cobalt chromium Vision and Mini-Vision stents (Abbott Vascular, USA).
METHODS: A total of 247 consecutive patients with 293 de novo lesions in native coronary arteries were treated with cobalt chromium Vision (n=184; stent diameter 2.75 mm to 4.0 mm) or Mini-Vision stents (n=109; stent diameter 2.0 mm to 2.5 mm), and scheduled for six months of angiographic follow-up. The primary end point was in-stent late loss after six months.
RESULTS: Acute coronary syndromes were present in 83.4% (n=206) of patients. The preinterventional reference diameter of Vision stents was 2.70+/-0.34 mm and for Mini-Vision stents, it was 2.13+/-0.27 mm (P<0.001). Clinical and angiographic follow-up was 98.0% and 51.2%, respectively. In the Vision group, in-stent late loss was 0.64+/-0.67 mm and the binary restenosis rate was 17.9%. In the Mini-Vision group, in-stent late loss was 0.82+/-0.71 mm and the restenosis rate was 45.4%. No difference in occurrence of restenosis within the segments proximal or distal to the stent was observed. The restenotic pattern was predominantly focal with a short length of 7.9+/-4.4 mm.
CONCLUSIONS: The use of the cobalt chromium Vision stent for the treatment of de novo lesions was associated with a low late loss and binary angiographic restenosis rate.