[The epidemiology of heart failure in Japan]

Hiroshi Okamoto1, Akira Kitabatake

  • 1Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine.

Insights

Heart failure survival in Japan has improved over 27 years, with ten-year survival rates exceeding 90% in patients treated with ACE inhibitors and beta blockers. This progress is partly due to older, less severely affected patients and better treatments.

Area of Science:

  • Cardiology
  • Epidemiology
  • Public Health

Context:

  • Heart failure (HF) poses a significant public health challenge in Japan, with an estimated one million individuals affected.
  • Limited epidemiological data exist on HF prognosis and survival trends in a Japanese population-based setting.
  • Dilated cardiomyopathy (DCM) is a primary cause of severe heart failure.

Purpose:

  • To investigate temporal changes in heart failure prognosis and survival over 27 years in Japan.
  • To analyze survival rates across three distinct 9-year periods.
  • To identify factors influencing survival improvements in heart failure patients.

Summary:

  • A 27-year study analyzed three cohorts, revealing progressive improvements in 10-year heart failure survival rates.
  • Patients in later cohorts were older and less severely affected, contributing to improved survival.
  • Subgroup analysis showed that 10-year survival rates exceeded 90% for patients treated with ACE inhibitors and beta blockers.

Impact:

  • Demonstrates significant advancements in heart failure management and patient outcomes in Japan.
  • Highlights the effectiveness of ACE inhibitors and beta blockers in improving long-term survival.
  • Provides crucial epidemiological insights for public health strategies and future research in heart failure.

Related Concept Videos

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 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...
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...
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 VII: Nursing Interventions01:30

Heart Failure VII: Nursing Interventions

The first step in nursing management of a patient with heart failure involves thoroughly assessing the patient's medical history.Subjective Data: Obtain the patient's medical history of coronary artery disease, hypertension, myocardial infarction, and symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea.Objective Data: Conduct a physical examination to identify findings such as jugular vein distention, pulmonary crackles, tachycardia, murmurs, peripheral edema, and vital signs,...