[Association between stent fracture and restenosis after drug-eluting stent implantation].
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.
Tian
Feng
F
Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China.
Chen
Yun-dai
YD
Sun
Zhi-jun
ZJ
Liu
Chang-fu
CF
Yang
Ting-shu
TS
Song
Xian-tao
XT
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