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ǥ : 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.

 

 

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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