title: Intravascular ultrasound predictors of side branch occlusion in bifurcation lesions after percutaneous coronary intervention.
abstract: BACKGROUND
  Percutaneous coronary intervention (PCI) of bifurcation lesion has been associated with a low success rate and a high incidence of procedural complications, including side branch occlusion and myocardial infarction. It remains controversial whether preintervention intravascular ultrasound (IVUS) findings can help to identify side branches likely to occlude after PCI of bifurcation lesions.
  
  
  RESULTS
  From our IVUS database we identified 81 bifurcation lesions in 72 patients. Side branches were classified into 2 groups: group 1 had ostial side branch stenosis due to atherosclerotic plaque only in the main vessel (n=61), and group 2 had plaque truly involved in the side branch ostium (n=20). There was no significant difference between the 2 groups in the extent of ostial stenosis as assessed by angiography. After PCI, 7 side branches occluded in group 2, compared with 5 side branches occluded in group 1 (35% vs 8%, p=0.003).
  
  
  CONCLUSIONS
  Ostial plaque distribution as assessed by IVUS may be one of the consistent predictors of side branch occlusion after PCI.
authors.affiliation: Cardiovascular Division, Yokohama City University Medical Center, Yokohama, Japan.
authors.forename: Eri
authors.initials: E
authors.lastname: Furukawa
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Hibi
authors.forename: Masami
authors.initials: M
authors.lastname: Kosuge
authors.forename: Tomoyori
authors.initials: T
authors.lastname: Nakatogawa
authors.forename: Noritaka
authors.initials: N
authors.lastname: Toda
authors.forename: Takeshi
authors.initials: T
authors.lastname: Takamura
authors.forename: Kengo
authors.initials: K
authors.lastname: Tsukahara
authors.forename: Jun
authors.initials: J
authors.lastname: Okuda
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Ootsuka
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Tahara
authors.forename: Teruyasu
authors.initials: T
authors.lastname: Sugano
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Endo
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kimura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Umemura
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D001158:Arteries / Q000000981:diagnostic imaging; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging*; D017023:Coronary Angiography; D016208:Databases, Factual; D003936:Diagnosis, Computer-Assisted; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D012984:Software; D018084:Ultrasonography, Interventional / Q000379:methods*