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Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.8K
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...
1.8K
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

46
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...
46
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

27
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...
27
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

31
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...
31
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

39
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...
39
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

23
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
23

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Related Experiment Video

Updated: Sep 1, 2025

A Surgical Model of Heart Failure with Preserved Ejection Fraction in Tibetan Minipigs
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A Surgical Model of Heart Failure with Preserved Ejection Fraction in Tibetan Minipigs

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Aging and Heart Failure with Preserved Ejection Fraction.

Kathryn F Larson1, Awais Malik1, Frank V Brozovich1,2

  • 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.

Comprehensive Physiology
|August 11, 2022
PubMed
Summary
This summary is machine-generated.

Heart failure with preserved ejection fraction (HFpEF) is a growing condition, particularly in older adults. Aging accelerates HFpEF development, suggesting it may be a form of "presbycardia," or age-related heart dysfunction.

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Area of Science:

  • Cardiovascular Physiology
  • Geriatric Medicine
  • Pathophysiology

Background:

  • Heart failure with preserved ejection fraction (HFpEF) is a clinical syndrome marked by the heart's inability to pump sufficient blood at normal pressures.
  • HFpEF is increasingly prevalent, with incidence rising significantly with age.
  • Comorbidities like hypertension, diabetes, and obesity contribute to HFpEF's complex and heterogeneous nature.

Purpose of the Study:

  • To review the critical role of aging in the development of HFpEF.
  • To examine the biochemical and physiological mechanisms underlying HFpEF, with a focus on aging's impact.
  • To explore the hypothesis that HFpEF represents a manifestation of presbycardia.

Main Methods:

  • Review of existing literature on HFpEF pathophysiology.
  • Analysis of biochemical and cellular signaling pathways involved in HFpEF.
  • Examination of physiological changes associated with aging and their contribution to HFpEF.

Main Results:

  • HFpEF is characterized by vascular stiffness, elevated cardiac filling pressures, pulmonary hypertension, and impaired fluid balance.
  • Aging processes act as accelerators for HFpEF development.
  • Phenotypic heterogeneity in HFpEF arises from comorbid conditions affecting cellular and biochemical levels.

Conclusions:

  • Aging is a significant factor in the pathogenesis of HFpEF.
  • HFpEF may be understood as a form of presbycardia, linking age-related cardiovascular changes to the disease.
  • Understanding aging's role is crucial for addressing the complexity and heterogeneity of HFpEF.