Long-term angiographic outcomes of post-sirolimus-eluting stent restenosis in Japanese patients.
Though restenosis after drug-eluting stent implantation is still observed, the factors affecting post-sirolimus-eluting stent restenosis (re-restenosis) have not been fully determined. We evaluated the long-term angiographic outcomes and examined background factors affecting re-restenosis. We enrolled 51 patients with 68 sirolimus-eluting stent (SES) restenosis lesions who underwent target lesion revascularization (TLR) and angiographic follow-up studies. Re-restenosis was observed in 29 of 68 restenosis lesions, and the rate was 42.6%. Study subjects were divided into two groups: a re-restenosis (Re-R) group (20 patients) with 29 lesions and a restenosis (R) group (31 patients) with 39 lesions with no re-restenosis. There were no differences in age, sex, coronary risk factors, past history, or medications between the two groups. Re-restenosis was observed more frequently in the right coronary artery (Re-R group vs. R group; 65.5 vs. 33.3%, P = 0.009). The incidence of stent fracture was higher in the Re-R group (Re-R group vs. R group; 48.3 vs. 12.8%, P = 0.003). QCA results showed that the initial lesion length at the time of first coronary intervention was significantly longer in the Re-R group (Re-R group vs. R group; 21.6 ± 3.37 vs. 12.6 ± 4.98 mm, P = 0.049). The rate of re-restenosis was 47.1% when treated with POBA alone, while it was 36.7% with SES treatment. In multivariate analysis, the initial lesion length at the time of first coronary intervention (odds ratio = 1.64, 95% CI 1.29-2.06, P < 0.001) and stent fracture (odds ratio = 12.42, 95% CI 1.89-81.4, P = 0.009) were independent predictors of re-restenosis. This study demonstrates that recurrent restenosis with SES treatment is associated with lesion length and stent fracture, a finding that is beneficial in the management of restenosis after SES implantation.
Department of Cardiology, Kouseikai Takeda Hospital, 841-5 Higashishiokoji-cho, Shimogyo-ku, Kyoto, Kyoto, 600-8558, Japan. flower_bird_wind_moon@hotmail.co.jp
Nobuyuki
N
Miyai
Noriyuki
N
Kinoshita
Keisuke
K
Oota
Takeshi
T
Yamada
Reo
R
Nakamura
Hidekazu
H
Irie
Tetsuo
T
Hashimoto
Shyunichi
S
Tamaki
Hiroaki
H
Matsubara
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation*; D044466:Asian People; D002317:Cardiovascular Agents / Q000008:administration & dosage*; D016009:Chi-Square Distribution; D017023:Coronary Angiography; D023903:Coronary Restenosis / Q000000981:diagnostic imaging* / Q000208:ethnology / Q000209:etiology / Q000628:therapy; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000208:ethnology / Q000628:therapy*; D054855:Drug-Eluting Stents; D005260:Female; D006801:Humans; D007564:Japan; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D020123:Sirolimus / Q000008:administration & dosage*; D013997:Time Factors; D016896:Treatment Outcome
D002317:Cardiovascular Agents; D020123:Sirolimus