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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

100
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

138
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

182
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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Related Experiment Video

Updated: Nov 4, 2025

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.

Andrea Salzano1, Mariarosaria De Luca2, Muhammad Zubair Israr3

  • 1IRCCS SDN Nuclear and Diagnostic Research Institute, Naples, Italy.

Heart Failure Clinics
|May 30, 2021
PubMed
Summary
This summary is machine-generated.

Exercise intolerance in heart failure with preserved ejection fraction (HFpEF) impacts quality of life and survival. Cardiopulmonary exercise testing aids diagnosis, while exercise training shows promise for improving tolerance in HFpEF patients.

Keywords:
Aerobic capacityCardiac functionExercise toleranceExercise trainingHeart failure with preserved ejection fractionSkeletal muscle function

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Area of Science:

  • Cardiology
  • Exercise Physiology

Background:

  • Exercise intolerance is a key symptom in heart failure with preserved ejection fraction (HFpEF).
  • This condition significantly reduces quality of life, increases hospitalizations, and elevates mortality rates.
  • Identifying the mechanisms of exercise limitation is crucial for managing HFpEF.

Purpose of the Study:

  • To discuss the pathophysiology of exercise limitation in HFpEF.
  • To describe methods for assessing exercise tolerance.
  • To evaluate the prognostic implications and therapeutic strategies for HFpEF.

Main Methods:

  • Utilizing cardiopulmonary exercise testing (CPET) to quantify exercise intolerance.
  • Analyzing CPET data to identify the primary mechanisms of exercise limitation.
  • Reviewing existing literature on exercise training interventions for HFpEF.

Main Results:

  • CPET is the optimal method for assessing exercise intolerance in HFpEF.
  • Exercise training programs have demonstrated benefits in improving exercise tolerance.
  • Further research is required to determine optimal exercise training protocols (type and duration).

Conclusions:

  • Exercise intolerance in HFpEF has significant clinical implications.
  • CPET is essential for guiding treatment and prognosis.
  • Exercise training represents a promising therapeutic avenue, warranting further investigation into optimal parameters.