title: Effects of nebivolol on left ventricular function in elderly patients with chronic heart failure: results of the ENECA study.
abstract: OBJECTIVE
  To examine the effect of the beta(1)-selective beta-blocker nebivolol, administered as add-on therapy, on left ventricular function in 260 elderly patients (>65 years) with chronic heart failure (CHF).
  
  
  METHODS
  The principal inclusion criteria were (1) NYHA class II-IV CHF and (2) a left ventricular ejection fraction (LVEF) <= 35%. The primary end-point was the change in LVEF in response to nebivolol treatment for 8 months.
  
  
  RESULTS
  Baseline LVEF values in the two groups were as follows: nebivolol 25.41+/-7.09% and control 26.41+/-5.55%. LVEF improved significantly (p=0.027) more in the nebivolol group (6.51+/-9.15%) than in the control group (3.97+/-9.20%), the relative improvement (percentage increase in the initial value) being 35.70+/-57.62% in the nebivolol group and 19.19+/-40.96% (p=0.008) in the placebo group. Examination of different subgroups did not reveal any heterogeneity in the effects of nebivolol treatment vs. placebo treatment. There were no significant differences between the nebivolol and placebo groups as concerns the changes in clinical status, quality of life, or safety parameters.
  
  
  CONCLUSIONS
  The findings of the ENECA study confirmed that nebivolol significantly improved cardiac function and proved to be safe and well tolerated in elderly patients with signs of CHF and an impaired LVEF.
authors.affiliation: Institute of Cardiology, University of Debrecen, 4004 Debrecen, P.O.B.: 1, Hungary. edes@jaguar.unideb.hu
authors.forename: Istvan
authors.initials: I
authors.lastname: Edes
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Gasior
authors.forename: Krystian
authors.initials: K
authors.lastname: Wita
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D000368:Aged; D001578:Benzopyrans / Q000494:pharmacology*; D004311:Double-Blind Method; D004983:Ethanolamines / Q000494:pharmacology*; D005260:Female; D006333:Heart Failure / Q000188:drug therapy / Q000503:physiopathology*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D000068577:Nebivolol; D011788:Quality of Life; D013318:Stroke Volume; D018487:Ventricular Dysfunction, Left / Q000188:drug therapy; D016277:Ventricular Function, Left / Q000187:drug effects*
chemical_list: D000319:Adrenergic beta-Antagonists; D001578:Benzopyrans; D004983:Ethanolamines; D000068577:Nebivolol