Abstract
Purpose: Anemia is an important comorbidity in heart failure and has been associated with increased mortality. The goals of this study were to define the prevalence of anemia in a community population with heart failure, examine trends in prevalence over time, and evaluate the role of anemia in patients with heart failure with preserved and reduced ejection fraction. Methods: Two cohorts of Olmsted County residents with heart failure were examined. The retrospective cohort included incident heart failure cases from 1979 to 2002 (n = 1063). The prospective cohort included active heart failure cases from 2003 to 2006 (n = 677). Clinical characteristics were collected. Anemia was defined by World Health Organization criteria. Results: The prevalence of anemia was 40% in the retrospective cohort and 53% in the prospective cohort. Anemia prevalence increased by an estimated 16% between 1979 and 2002 (P = .008) and was higher in those with preserved (≥50%) versus reduced (<50%) ejection fraction (58% vs 48%, respectively, P < .001) from 2003 to 2006. Anemia was associated with a large increase in the risk of death (P < .001 both cohorts). The relationship between mortality and hemoglobin followed a J-shaped curve, with increased mortality with hemoglobin levels less than 14 mg/dL and greater than 16 mg/dL. In the prospective cohort, after adjustment for clinical characteristics, the hazard ratios (95% confidence interval) for death were 3.07 (1.26-6.82) in those with a hemoglobin level of 16 mg/dL or more and 2.39 (1.37-4.27) in those with a hemoglobin level less than 10 mg/dL, using hemoglobin 14 to 16 mg/dL as the referent. Conclusion: In the community, half of patients with heart failure are anemic, and the prevalence of anemia has increased over time. Anemia is more prevalent in heart failure with preserved ejection fraction and is associated with a large increase in mortality.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 726-732 |
| Number of pages | 7 |
| Journal | American Journal of Medicine |
| Volume | 121 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2008 |
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Keywords
- Anemia
- Epidemiology
- Heart failure
- Hemoglobin
- Mortality
- Prevalence
ASJC Scopus subject areas
- Nursing(all)
Cite this
Anemia and Heart Failure : A Community Study. / Dunlay, Shannon M; Weston, Susan A.; Redfield, Margaret May; Killian, Jill M.; Roger, Veronique Lee.
In: American Journal of Medicine, Vol. 121, No. 8, 08.2008, p. 726-732.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anemia and Heart Failure
T2 - A Community Study
AU - Dunlay, Shannon M
AU - Weston, Susan A.
AU - Redfield, Margaret May
AU - Killian, Jill M.
AU - Roger, Veronique Lee
PY - 2008/8
Y1 - 2008/8
N2 - Purpose: Anemia is an important comorbidity in heart failure and has been associated with increased mortality. The goals of this study were to define the prevalence of anemia in a community population with heart failure, examine trends in prevalence over time, and evaluate the role of anemia in patients with heart failure with preserved and reduced ejection fraction. Methods: Two cohorts of Olmsted County residents with heart failure were examined. The retrospective cohort included incident heart failure cases from 1979 to 2002 (n = 1063). The prospective cohort included active heart failure cases from 2003 to 2006 (n = 677). Clinical characteristics were collected. Anemia was defined by World Health Organization criteria. Results: The prevalence of anemia was 40% in the retrospective cohort and 53% in the prospective cohort. Anemia prevalence increased by an estimated 16% between 1979 and 2002 (P = .008) and was higher in those with preserved (≥50%) versus reduced (<50%) ejection fraction (58% vs 48%, respectively, P < .001) from 2003 to 2006. Anemia was associated with a large increase in the risk of death (P < .001 both cohorts). The relationship between mortality and hemoglobin followed a J-shaped curve, with increased mortality with hemoglobin levels less than 14 mg/dL and greater than 16 mg/dL. In the prospective cohort, after adjustment for clinical characteristics, the hazard ratios (95% confidence interval) for death were 3.07 (1.26-6.82) in those with a hemoglobin level of 16 mg/dL or more and 2.39 (1.37-4.27) in those with a hemoglobin level less than 10 mg/dL, using hemoglobin 14 to 16 mg/dL as the referent. Conclusion: In the community, half of patients with heart failure are anemic, and the prevalence of anemia has increased over time. Anemia is more prevalent in heart failure with preserved ejection fraction and is associated with a large increase in mortality.
AB - Purpose: Anemia is an important comorbidity in heart failure and has been associated with increased mortality. The goals of this study were to define the prevalence of anemia in a community population with heart failure, examine trends in prevalence over time, and evaluate the role of anemia in patients with heart failure with preserved and reduced ejection fraction. Methods: Two cohorts of Olmsted County residents with heart failure were examined. The retrospective cohort included incident heart failure cases from 1979 to 2002 (n = 1063). The prospective cohort included active heart failure cases from 2003 to 2006 (n = 677). Clinical characteristics were collected. Anemia was defined by World Health Organization criteria. Results: The prevalence of anemia was 40% in the retrospective cohort and 53% in the prospective cohort. Anemia prevalence increased by an estimated 16% between 1979 and 2002 (P = .008) and was higher in those with preserved (≥50%) versus reduced (<50%) ejection fraction (58% vs 48%, respectively, P < .001) from 2003 to 2006. Anemia was associated with a large increase in the risk of death (P < .001 both cohorts). The relationship between mortality and hemoglobin followed a J-shaped curve, with increased mortality with hemoglobin levels less than 14 mg/dL and greater than 16 mg/dL. In the prospective cohort, after adjustment for clinical characteristics, the hazard ratios (95% confidence interval) for death were 3.07 (1.26-6.82) in those with a hemoglobin level of 16 mg/dL or more and 2.39 (1.37-4.27) in those with a hemoglobin level less than 10 mg/dL, using hemoglobin 14 to 16 mg/dL as the referent. Conclusion: In the community, half of patients with heart failure are anemic, and the prevalence of anemia has increased over time. Anemia is more prevalent in heart failure with preserved ejection fraction and is associated with a large increase in mortality.
KW - Anemia
KW - Epidemiology
KW - Heart failure
KW - Hemoglobin
KW - Mortality
KW - Prevalence
UR - http://www.scopus.com/inward/record.url?scp=48549103362&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=48549103362&partnerID=8YFLogxK
U2 - 10.1016/j.amjmed.2008.03.039
DO - 10.1016/j.amjmed.2008.03.039
M3 - Article
C2 - 18691487
AN - SCOPUS:48549103362
VL - 121
SP - 726
EP - 732
JO - American Journal of Medicine
JF - American Journal of Medicine
SN - 0002-9343
IS - 8
ER -