title: Impact of J-CTO score on procedural outcome and target lesion revascularisation after percutaneous coronary intervention for chronic total occlusion: a substudy of the J-CTO Registry (Multicentre CTO Registry in Japan).
abstract: OBJECTIVE
  We investigated the impact of the J-CTO score, a pre-procedural risk score for successful guidewire crossing within 30 minutes through chronic total occlusion (CTO) lesions, on procedural and midterm clinical outcomes in terms of target lesion revascularisation (TLR) after CTO recanalisation.
  
  
  RESULTS
  The primary endpoint of this substudy was midterm TLR. The net midterm success rate was calculated by multiplying the lesion success rate by the TLR-free survival rate. The initial lesion success rates according to the J-CTO score categories of 0, 1, 2, and ≥3 were 97.0%, 92.1%, 86.5%, and 73.6%, respectively (p<0.001). The TLR rates at one year according to the J-CTO score categories of 0, 1, 2, and ≥3 were 5.3%, 11.1%, 16.7%, and 13.4%, respectively (p=0.082). The net midterm success rates according to the J-CTO score categories of 0, 1, 2, and ≥3 were 91.9%, 81.9%, 72.1%, and 63.7%, respectively (p<0.001).
  
  
  CONCLUSIONS
  Patients with CTO lesions with lower J-CTO scores are expected to achieve a high procedural success rate and an increased TLR-free survival rate. Patients with high J-CTO scores still remain an issue.
authors.affiliation: Kurashiki Central Hospital, Kurashiki, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Morino
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Abe
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kimura
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Toshiya
authors.initials: T
authors.lastname: Muramatsu
authors.forename: Masahiko
authors.initials: M
authors.lastname: Ochiai
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Noguchi
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kato
authors.forename: Yoshisato
authors.initials: Y
authors.lastname: Shibata
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Hiasa
authors.forename: Osamu
authors.initials: O
authors.lastname: Doi
authors.forename: Takehiro
authors.initials: T
authors.lastname: Yamashita
authors.forename: Takeshi
authors.initials: T
authors.lastname: Morimoto
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Hinohara
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Fujii
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Mitsudo
mesh_terms: D000368:Aged; D006328:Cardiac Catheterization / Q000009:adverse effects; D016009:Chi-Square Distribution; D002908:Chronic Disease; D017023:Coronary Angiography / Q000379:methods; D054059:Coronary Occlusion / Q000000981:diagnostic imaging / Q000628:therapy*; D003661:Decision Support Techniques; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D007564:Japan; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D016017:Odds Ratio; D062645:Percutaneous Coronary Intervention / Q000009:adverse effects; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012042:Registries; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome