Long-term Clinical Outcomes of Single Long Coronary Stent

Lee, Seung Whan; Lee, Jae Hwan; Kim, Young Hak; Kim, Jun; Kim, June Hong; Lee, Cheol Whan; Hong, Myeong Ki; Kim, Jae Joong; Park, Seong Wook; Park, Seung Jung

Abstract

BACKGROUND AND OBJECTIVES: The aim of this study was to evaluate clinical outcomes following single long coronary stenting.
SUBJECTS AND METHODS
We evaluated the short- and long-term clinical outcomes in 935 consecutive patients with single long (>or=18 mm) coronary stents. The patients were divided into three groups according to the stent length : (1) Group A, 445 patients, 18 mmor=30 mm.
RESULTS
There were no significant differences in the baseline clinical characteristics between the 3 groups. Group A had larger reference vessel sizes (3.33+/-0.40 mm vs. 3.18+/-0.50 mm in the other groups, p<0.001) and stent diameters (3.46+/-0.40 mm vs. 3.27+/-0.42 mm in the other groups, p<0.001). One-year clinical follow-up and 6-month angiographic follow-up were possible in all patients, and for 578 of the lesions (62%), respectively. The longer the stent, the higher the in-stent restenosis (A : B : C=20.3% : 27.1% : 35.7%, respectively, p=0.008). For the cases where the stent diameter was >or=3.5 mm, the in-stent restenosis rates were similar between the 3 groups (16.2% : 23.0% : 21.1%, respectively, p=0.43). There were no significant differences in the 1-year cumulative TLR (8.3+/-1.4% : 11.1+/-1.9% : 12.8+/-2.8%, respectively, p=0.22) and the overall cardiac event (death, myocardial infarction, and TLR)-free survivals (89.9+/-1.5% : 88.1+/-1.9% : 85.3+/-2.9%, respectively, p=0.31) between the 3 groups.
CONCLUSION
The long-term clinical outcomes following single long coronary stenting are acceptable. The single long coronary stents of >or=3.5 mm could be a useful therapeutic option for diffuse coronary lesions.