title: [Clinical and angiographical factors influencing improvement of left ventricular function after implantation of dare-metal stents in patients with chronic total occlusions of coronary arteries].
abstract: BACKGROUND
  Effect on left ventricular (LV) contractility of percutaneous coronary interventions (PCI) with implantation of bare-metal stents in patients with chronic total occlusions (CTO) of coronary arteries (CA) has not been completely studied. Aim of this study was to assess effect of PCI with implantation of bare-metal stents ("L+", Relisys, U) on LV ejection fraction (EF) and to investigate clinical and angiographical factors capable to affect restoration of LVEF.
  
  
  METHODS
  We included in this study 154 patients after successful implantation of bare-metal stents in CTO of main epicardial CA. For assessment of LV function we performed echocardiographical examination before and in 6 months after PCI.
  
  
  RESULTS
  Significant increase of LV EF (from 50.4 +/- 10.7 to 56.1+/-11.3%, p<0.0001), decreases of LV end diastolic (from 86.2+/-17.9 to 80,8+/-18,1 ml/m2, p<0.001) and end systolic (from 41.4+/-14.9 t 34.7+/-13.8 ml/m2 (p<0,001) volumes took place after implantation of stents. Multivariate analysis showed that initial LVEF <50%, duration of occlusion <2 months and absence of diabetes mellitus were independent predictors of improvement of LVEF.
  
  
  CONCLUSIONS
  Implantation of bare-metal stents in patients with CTO CA affects positively LVEF during first 6 months after PCI especially in patients with lowered LVEF, in patients without diabetes mellitus, and duration of occlusion less or equal 2 months.
authors.forename: D V
authors.initials: DV
authors.lastname: Fettser
authors.forename: T A
authors.initials: TA
authors.lastname: Batyraliev
authors.forename: Z A
authors.initials: ZA
authors.lastname: Niiazova-Karben
authors.forename: A
authors.initials: A
authors.lastname: Sercelik
authors.forename: K A
authors.initials: KA
authors.lastname: Abdramanov
authors.forename: Iu N
authors.initials: IuN
authors.lastname: Belenkov
mesh_terms: D001807:Blood Vessel Prosthesis; D002908:Chronic Disease; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D020127:Recovery of Function; D012720:Severity of Illness Index; D015607:Stents; D016896:Treatment Outcome; D016277:Ventricular Function, Left / Q000502:physiology*