title: [Association between stent fracture and restenosis after drug-eluting stent implantation].
abstract: OBJECTIVE
  This study was performed to evaluate the relationship between the stent fracture and restenosis after drug-eluting stent implantation.
  
  
  METHODS
  The study enrolled 536 patients with angiographies during stenting procedure and follow-up, the patients were divided into DES group (n=397) and BMS group (n=139). The coronary angiography images were analyzed to detect restenosis and stent fracture.
  
  
  RESULTS
  Restenosis rate was significantly lower in DES group (31/397, 7.8%) compared that in BMS group (30/139, 21.6%, P<0.05). Stent fracture (n=5) was found only in DES group and not in BMS group (P<0.05). Restenosis were found in all stent fracture segments. The stent fracture developed at the angulated tortuosity lesions.
  
  
  CONCLUSIONS
  Stent fracture is one of the causes of restenosis after drug-eluting stents implantation and related to implantation of long DES stent at the location of angulated tortuosity lesions.
authors: Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China.
authors: Feng
authors: F
authors: Tian
authors: Yun-dai
authors: YD
authors: Chen
authors: Zhi-jun
authors: ZJ
authors: Sun
authors: Chang-fu
authors: CF
authors: Liu
authors: Ting-shu
authors: TS
authors: Yang
authors: Xian-tao
authors: XT
authors: Song
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D023903:Coronary Restenosis / Q000000981:diagnostic imaging / Q000209:etiology*; D054855:Drug-Eluting Stents / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies; D014463:Ultrasonography