title: Prevalence of impaired left ventricular systolic function and heart failure in a middle aged and elderly urban population segment of Copenhagen.
abstract: OBJECTIVE
  To assess the prevalence of impaired left ventricular systolic function and manifest heart failure in a general population aged 50-89 years.
  
  
  METHODS
  In this cross sectional survey, participants filled in a heart failure questionnaire. ECG, blood tests, and echocardiography were performed.
  
  
  METHODS
  The study population was recruited from general practitioners situated in the same urban area and examined in a university hospital in Copenhagen, Denmark.
  
  
  METHODS
  764 participants (432 women and 332 men, median (SD) age 66 (11) years) participated. The study population was stratified to include a minimum of 150 persons in each age decade.
  
  
  METHODS
  Prevalence of impaired systolic function and manifest heart failure.
  
  
  RESULTS
  The prevalence of systolic dysfunction (left ventricular ejection fraction < or = 40%) was more than twice as high among men (7.6%) as among women (2.6%). In the male population systolic heart failure (left ventricular ejection fraction < or = 40% and symptoms) was found in 1.8% of the 50-59 years age group and approximately doubled for each age decade to reach 13.9% in octogenarians. Among women systolic dysfunction increased from 0.8% to 4.3% in the same age groups. Asymptomatic cases accounted for 44.0% of all cases of systolic dysfunction in the male population and only 9.1% in the female population.
  
  
  CONCLUSIONS
  In this age controlled population study impaired left ventricular systolic function and heart failure increased substantially with age and was more than twice as frequent among men as among women. Asymptomatic left ventricular dysfunction occurred more frequently in men than in women and was less prevalent with increasing age.
authors: Department of Cardiology and Endocrinology E, H:S Frederiksberg University Hospital, Copenhagen, Denmark. ilan.raymond@dadlnet.dk
authors: I
authors: I
authors: Raymond
authors: F
authors: F
authors: Pedersen
authors: F
authors: F
authors: Steensgaard-Hansen
authors: A
authors: A
authors: Green
authors: M
authors: M
authors: Busch-Sorensen
authors: C
authors: C
authors: Tuxen
authors: J
authors: J
authors: Appel
authors: J
authors: J
authors: Jacobsen
authors: D
authors: D
authors: Atar
authors: P
authors: P
authors: Hildebrandt
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology; D002303:Cardiac Output, Low / Q000453:epidemiology* / Q000503:physiopathology; D003718:Denmark / Q000453:epidemiology; D004452:Echocardiography; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D013318:Stroke Volume / Q000502:physiology; D014505:Urban Population; D018487:Ventricular Dysfunction, Left / Q000453:epidemiology* / Q000503:physiopathology