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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...
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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...

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Related Experiment Video

Updated: Jul 26, 2026

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
07:11

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Published on: October 28, 2020

Racial differences in the outcome of left ventricular dysfunction.

D L Dries1, D V Exner, B J Gersh

  • 1Clinical Trials Scientific Research Group, Division of Epidemiology and Clinical Application, National Heart, Lung, and Blood Institute, Bethesda, MD 20892-7936, USA. ddries@aol.com

The New England Journal of Medicine
|February 25, 1999
PubMed
Summary

Black patients with left ventricular dysfunction face higher mortality and heart failure progression risks than white patients. This suggests potential racial disparities in the condition's natural history and outcomes.

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Area of Science:

  • Cardiology
  • Clinical Research
  • Health Disparities

Background:

  • Population studies indicate higher mortality rates for Black patients with congestive heart failure compared to white patients.
  • Attributed factors include differences in heart failure severity, causes, management, comorbidities, and socioeconomic status.
  • This study investigates potential racial differences in the natural history of left ventricular dysfunction.

Purpose of the Study:

  • To retrospectively analyze outcomes of left ventricular systolic dysfunction in Black and white participants within the Studies of Left Ventricular Dysfunction (SOLVD) trials.
  • To determine if racial differences persist in outcomes despite standardized therapy and follow-up.

Main Methods:

  • Retrospective analysis of data from the SOLVD prevention and treatment trials.
  • Inclusion of both asymptomatic and symptomatic patients with left ventricular systolic dysfunction.
  • Standardized therapy and follow-up protocols were applied to all participants.

Main Results:

  • Black patients exhibited higher overall mortality rates in both the SOLVD prevention and treatment trials compared to white patients.
  • After adjusting for covariates, Black patients consistently showed a higher risk of all-cause mortality in both trials.
  • Black patients also faced a higher risk of death due to pump failure and the combined endpoint of death or hospitalization for heart failure.

Conclusions:

  • Black individuals with mild-to-moderate left ventricular systolic dysfunction appear to have a greater risk of heart failure progression and all-cause mortality compared to similarly treated white individuals.
  • These findings suggest potential racial variations in the outcomes of both asymptomatic and symptomatic left ventricular systolic dysfunction.