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Epidemiological aspects of heart failure
1Section of Preventive Medicine and Epidemiology, Boston University School of Medicine, Evans Research Foundation, University Hospital, Massachusetts.
Cardiology Clinics
|February 1, 1989
Summary
Epidemiologic data on heart failure incidence and outcomes are limited. The Framingham Study reveals increasing heart failure rates with age, particularly in men, and highlights its poor prognosis, similar to cancer.
Area of Science:
- Cardiology
- Epidemiology
- Public Health
Background:
- Limited epidemiologic data exists on the prevalence, incidence, and prognosis of cardiac failure in the general population.
- The Framingham Study offers a unique, long-term cohort for examining heart failure trends.
Purpose of the Study:
- To investigate the incidence, risk factors, and outcomes of overt cardiac failure using data from the Framingham Study.
- To provide comprehensive epidemiologic insights into heart failure within a general population cohort.
Main Methods:
- Longitudinal cohort study (Framingham Study) with biennial follow-up over 30 years.
- Analysis of 485 first-time overt cardiac failure cases in men and women.
- Examination of associations with age, sex, hypertension, coronary heart disease, and valvular deformity.
Main Results:
- Annual heart failure incidence increased from 3/1000 (ages 35-64) to 10/1000 (ages 65-94).
- Coronary heart disease and hypertension were primary associated conditions; risk increased 2-6 fold with coronary heart disease.
- Cardiac failure demonstrated a poor prognosis, with 6-year mortality rates of 82% (men) and 67% (women), significantly elevated cardiovascular and stroke mortality.
Conclusions:
- Cardiac failure is a lethal condition with incidence rising sharply with age.
- Hypertension and coronary heart disease are major risk factors, with significant impact on mortality.
- The Framingham Study provides crucial epidemiologic data on heart failure, underscoring its severe public health implications.