title: Drug-eluting stent for the treatment of small coronary lesion: comparison between sirolimus- and paclitaxel-eluting stent.
abstract: BACKGROUND
  Patients with small coronary lesions are at increased risk for repeat interventions after coronary angioplasty and stenting. The efficacy of drug-eluting stents (DES) has been demonstrated to improve the outcomes of these patients and is a focus of interest. Currently, two platforms of DES are available (sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES)). However, it has less been known that DES, SES vs PES, is superior for the treatment of small coronary lesions.
  
  
  METHODS
  In this retrospective study, 87 consecutive patients with 151 lesions underwent implantation of coronary SES (n = 68) and PES (n = 83). Quantitative coronary angiography (QCA) was performed at the time of stent implantation and subsequently at 8 months post-stenting. Small vessel disease was defined as lesions in vessels with diameter 2.5 mm measured by QCA. Major adverse cardiac events (MACE) including death, thrombosis, nonfatal myocardial infarction and target lesion revascularization (TLR) were compared between the two groups.
  
  
  RESULTS
  Baseline clinical characteristics and angiographic parameters were similar between the two groups. At clinical and angiographic follow-up, overall thrombosis rates were similar in both groups (0 vs 1.2%, P > 0.05). The TLR and in-segment restenosis were not significantly different (19.1% vs 25.3%; 10.3% vs 10.8%, P = 0.365 and P = 0.913 respectively) between the two groups. The in-stent restenosis rate, however, was significantly higher in the PES group (4.4% vs 21.7%; P = 0.002). Similarly, the late loss was significantly higher in the PES group ((0.140.38) mm vs (0.490.61) mm; P < 0.001).
  
  
  CONCLUSIONS
  In this small sample-size, non-randomized study, the data indicated that implantation of SES for the treatment of patients with small coronary lesion showed more favorable results in respect of restenosis compared with PES implantation.
authors: Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China. lijnjn@yahoo.com.cn
authors: Jian-jun
authors: JJ
authors: Li
authors: Bo
authors: B
authors: Xu
authors: Yue-jin
authors: YJ
authors: Yang
authors: Ji-lin
authors: JL
authors: Chen
authors: Shu-bin
authors: SB
authors: Qiao
authors: Wei-Hua
authors: WH
authors: Ma
authors: Xue-wen
authors: XW
authors: Qin
authors: Min
authors: M
authors: Yao
authors: Hai-bo
authors: HB
authors: Liu
authors: Yong-jian
authors: YJ
authors: Wu
authors: Jin-qing
authors: JQ
authors: Yuan
authors: Jue
authors: J
authors: Chen
authors: Shi-jie
authors: SJ
authors: You
authors: Jun
authors: J
authors: Dai
authors: Ran
authors: R
authors: Xia
authors: Run-lin
authors: RL
authors: Gao
mesh_terms: D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000628:therapy*; D023903:Coronary Restenosis / Q000517:prevention & control; D016503:Drug Delivery Systems; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017239:Paclitaxel / Q000008:administration & dosage*; D012189:Retrospective Studies; D020123:Sirolimus / Q000008:administration & dosage*; D015607:Stents
chemical_list: D017239:Paclitaxel; D020123:Sirolimus