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Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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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...
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Heart Failure VII: Nursing Interventions01:30

Heart Failure VII: Nursing Interventions

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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,...
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

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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...
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Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

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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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Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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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...
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Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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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...
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Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
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Exercise Intolerance In Heart Failure With Preserved Ejection Fraction.

Anisha A Gupte1, Dale J Hamilton2

  • 1Houston Methodist Research Institute, Houston, Texas.

Methodist Debakey Cardiovascular Journal
|August 4, 2016
PubMed
Summary

Heart failure with preserved ejection fraction (HFpEF) affects over half of Americans with heart failure. This review explores HFpEF mechanisms and supports exercise as a key management strategy.

Keywords:
diastolic dysfunctionexercise intoleranceexercise therapyheart failure with preserved ejection fractionimpaired diastolic functionmetabolic and bioenergetic factors

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Area of Science:

  • Cardiology
  • Exercise Physiology

Background:

  • Heart failure with preserved ejection fraction (HFpEF) is a prevalent condition affecting over 50% of Americans with heart failure.
  • Exercise intolerance is a primary symptom of HFpEF, yet its underlying pathophysiology remains poorly understood.
  • Current management strategies for HFpEF are often ineffective due to diverse etiologies and incomplete mechanistic insights.

Purpose of the Study:

  • To review the underlying mechanisms contributing to HFpEF.
  • To present evidence supporting exercise as a therapeutic intervention for HFpEF.
  • To highlight the limitations of traditional therapies in managing HFpEF.

Main Methods:

  • This is a review article.
  • It synthesizes current research on HFpEF pathophysiology.
  • It examines the role of exercise in managing HFpEF.

Main Results:

  • Neurohormonal blockade, effective in heart failure with reduced ejection fraction (HFrEF), has shown limited efficacy in HFpEF.
  • Diverse and complex mechanisms contribute to HFpEF development and progression.
  • Exercise demonstrates potential as a beneficial component of HFpEF management.

Conclusions:

  • Understanding HFpEF pathophysiology is crucial for developing effective treatments.
  • Exercise offers a promising avenue for improving outcomes in HFpEF patients.
  • Comprehensive management strategies for HFpEF should incorporate exercise interventions.