Prevalence and clinical implication of metabolic syndrome in chronic heart failure
Yutaka Miura1, Yoshihiro Fukumoto, Nobuyuki Shiba
1Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Insights
Metabolic syndrome (MetS) prevalence is double in chronic heart failure (CHF) patients compared to the general population. Metabolic components significantly impact both ischemic and non-ischemic CHF development.
Area of Science:
- Cardiology
- Metabolic Diseases
- Public Health
Background:
- Metabolic syndrome (MetS) is linked to ischemic heart disease (IHD).
- Its prevalence and significance in chronic heart failure (CHF) require further investigation.
Purpose of the Study:
- To determine the prevalence of MetS in Japanese patients with stage C/D CHF.
- To analyze the clinical characteristics and contributing metabolic factors in CHF patients with MetS.
Main Methods:
- A nationwide, large-scale clinical study involving 3,603 CHF patients from 6 Japanese institutes.
- Analysis of demographic data, lifestyle factors, comorbidities, and metabolic components.
Main Results:
- MetS prevalence in CHF patients was 45% in males and 19% in females, exceeding double that of the general population.
- CHF patients with MetS were younger, more likely to smoke/drink, and had higher rates of IHD and hypertensive heart disease.
- Elderly females with CHF showed a higher prevalence of heart failure with preserved ejection fraction and MetS.
- Metabolic components contributed similarly to both ischemic and non-ischemic CHF.
Conclusions:
- MetS is highly prevalent in Japanese CHF patients, significantly higher than in the general population.
- Metabolic components play a substantial role in the development of both ischemic and non-ischemic CHF.
Background:
Metabolic syndrome (MetS) is a pathological condition with a clustering of metabolic components and is a well-known risk and prognostic factor for ischemic heart disease (IHD). However, the prevalence and clinical significance of MetS remain to be fully elucidated in chronic heart failure (CHF), an important clinical syndrome caused by various cardiac abnormalities.
Methods And Results:
The present nationwide, large-scale clinical study enrolled 3,603 patients with stage C/D CHF from 6 institutes in Japan. First, the prevalence of MetS in CHF patients was demonstrated to be 45% in males and 19% in females, which is more than double compared with the general population in Japan. The CHF patients with MetS were characterized by younger age, higher prevalence of current smoking and drinking, IHD, and hypertensive heart disease, whereas the prevalence of HF with preserved ejection fraction and MetS was higher in elderly female patients. Next, the contribution of the metabolic components (waist circumference, hypertension, glucose intolerance/diabetes mellitus and dyslipidemia) was found to be comparable between the ischemic and the non-ischemic CHF patients.
Conclusions:
The prevalence of MetS in CHF patients is more than double compared with the general population in Japan and suggest that the metabolic components may have a substantial effect on the development of both ischemic and non-ischemic CHF.
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