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ȣ - 530393 178 |
Angiographic Outcomes of Zotarolimus-, Sirolimus-, and Paclitaxel-Eluting Stent for Native Coronary Arteries: Angiographic Study of the ZEST Trial |
ZEST Trial Investigators |
김영학, 박덕우, 윤성철, 강수진, 이승환, 이철환, 박성욱, 성인환, 이재환, 탁승제, 정명호, 장양수, 정상식, 양주영, 임도선, 승기배, 채제건, 허승호, 이상곤, 윤정한, 이내희, 최영진, 김현숙, 김기식, 김효수, 홍택종, 박헌식, 박승정 |
Background: Differential angiographic outcomes in the currently available drug-eluting stents remain uncertain.
Methods: Form the ZEST trial, which was a randomized multicenter trial comparing the outcomes of zotarolimus- (ZES), sirolimus- (SES) and paclitaxel-eluting stent (PES) for 3613 native coronary lesions, this angiographic substudy included lesions having serial coronary angiographies before and after procedure, and at 9 months. Lesions having angiographic surveillance before 4 months or after 12 months were excluded for analysis. The primary end point was angiographic restenosis rate with more than 50% of stenosis in analysis segment. All analyses were performed by intention-to-treat principle per lesion basis.
Results: This angiographic cohort included 2032 lesions (56.2%) comprising 682 (33.6%) ZES, 684 (33.7%) SES, and 666 (32.8%) PES lesions. Angiographic outcomes are listed in the Table. Kaplan-Meier incidence of target lesion revascularization (TLR) at 13 months was 6.1% in ZES, 1.8% in SES, and 9.7% in PES (p<0.001 in 3 groups, SES vs. PES, and SES vs. ZES; p=0.018 between ZES vs. PES). However, in restenotic lesions, proliferative or total pattern were more common in ZES than PES (18.2% vs. 3.9%, p=0.008)
Conclusion: In the systemic angiographic analysis of ZEST trial, SES was more effective in reducing restenosis and subsequent TLR than ZES or PES. In post-hoc analysis, although ZES had lower TLR rate than PES, angiographic restenosis rate did not differ between ZES and PES.
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ZES |
SES |
PES |
In-segment restenosis |
77 (11.3%) |
12 (1.8%) |
77 (11.6%) |
In-stent restenosis |
51 (7.5%) |
8 (1.2%) |
65 (9.8%) |
Proximal edge restenosis |
17 (2.5%) |
3 (0.4%) |
9 (1.4%) |
Distal edge restenosis |
12 (1.8%) |
1 (0.1%) |
8 (1.2%) |
In-segment late loss (mm) |
0.32±0.52 |
0.11±0.34 |
0.33±0.51 |
In-stent late loss (mm) |
0.54±0.53 |
0.16±0.34 |
0.46±0.53 |
All p<0.005 in 3 groups
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