title: Renal dysfunction and anemia in patients with heart failure with reduced versus normal ejection fraction.
abstract: BACKGROUND
  The presence of anemia and renal dysfunction grants a bad prognosis for patients with heart failure and reduced ejection fraction (HFREF). The impact on patients with heart failure and normal ejection fraction (HFNEF) is not widely studied.
  
  
  OBJECTIVE
  To study the prevalence and the prognosis of anemia and renal dysfunction (RD) in patients with heart failure according to the type of ventricular dysfunction.
  
  
  METHODS
  A total of 209 patients with chronic and stable heart failure were prospectively studied. Individuals with ejection fraction <50% were considered as HFREF patients. Anemia was defined, based on WHO criteria, as hemoglobin <13 g/dl for men and <12 g/dl for women. Renal function was calculated by means of the Simplified Modified Diet Renal Disease (sMDRD) formula. Hospitalizations, emergency admittances and obit by cardiac causes were considered as cardiac events.
  
  
  RESULTS
  Ninety patients had HFREF and 119 had HFNEF. The glomerular filtration rate (GFR) was smaller in HFREF group (57.6 +/- 66.2 versus 94.8 +/- 36.6 ml/min/1.73m(2); p=0.01). There was no difference in the prevalence of anemia between groups (23.3% versus 18.5%; p=0.34). Moderate to severe RD prevalence was higher in HFREF group (32.2% versus 16.8%; p=0.01). RD was the only factor associated with anemia that was independently associated with cardiac events (HR 2.52; 95%CI=1.27-5.2; p=0.01).
  
  
  CONCLUSIONS
  RD was less prevalent in HFNEF, while the prevalence of anemia did not differ between groups. RD was predictor of cardiac events independently on ejection fraction.
authors: Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, RJ, Brasil.
authors: Humberto
authors: H
authors: Villacorta
authors: Bolivar F
authors: BF
authors: Saenz-Tello
authors: Eduarda Barcellos dos
authors: EB
authors: Santos
authors: Ricardo
authors: R
authors: Steffen
authors: Christiane
authors: C
authors: Wiefels
authors: Luiz Costa
authors: LC
authors: Lima
authors: Ana Luíza F
authors: AL
authors: Sales
authors: Pedro
authors: P
authors: Soares
authors: Evandro Tinoco
authors: ET
authors: Mesquita
mesh_terms: D000368:Aged; D000740:Anemia / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006333:Heart Failure / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011379:Prognosis; D011446:Prospective Studies; D051437:Renal Insufficiency / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D012737:Sex Factors; D013318:Stroke Volume / Q000502:physiology*