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.
Abstract

Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...