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Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

2.1K
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...
2.1K
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

111
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...
111
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

189
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...
189
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

154
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...
154
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

180
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
180
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

128
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...
128

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Related Experiment Video

Updated: Nov 9, 2025

A Surgical Model of Heart Failure with Preserved Ejection Fraction in Tibetan Minipigs
07:09

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

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Heart failure subtypes: Pathophysiology and definitions.

Karl Swedberg1

  • 1Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden.

Diabetes Research and Clinical Practice
|April 16, 2021
PubMed
Summary
This summary is machine-generated.

Heart failure is diagnosed in two types based on ejection fraction, impacting treatment. Type 2 diabetes worsens heart failure prognosis and influences diabetes treatment choices.

Keywords:
DiabetesEpidemiologyHeart failurePathophysiologyPrognosis

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Induction and Phenotyping of Acute Right Heart Failure in a Large Animal Model of Chronic Thromboembolic Pulmonary Hypertension
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Induction and Phenotyping of Acute Right Heart Failure in a Large Animal Model of Chronic Thromboembolic Pulmonary Hypertension
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Area of Science:

  • Cardiology
  • Endocrinology
  • Internal Medicine

Background:

  • Heart failure (HF) diagnosis is categorized by left ventricular ejection fraction (LVEF) into two primary types.
  • LVEF classification significantly influences therapeutic strategies for heart failure.
  • Type 2 diabetes (T2DM) is a prevalent comorbidity in patients with chronic heart failure.

Purpose of the Study:

  • To highlight the clinical significance of HF classification based on LVEF.
  • To underscore the bidirectional impact of T2DM on chronic HF.
  • To inform treatment decisions in patients with coexisting HF and T2DM.

Main Methods:

  • Review of current diagnostic criteria for heart failure based on LVEF.
  • Analysis of the prognostic implications of HF subtypes.
  • Examination of the influence of chronic HF on T2DM management.

Main Results:

  • Heart failure is primarily classified as HF with preserved ejection fraction (HFpEF) or HF with reduced ejection fraction (HFrEF).
  • The presence of T2DM is associated with a poorer prognosis in patients with chronic heart failure.
  • Chronic heart failure necessitates adjustments in the management of type 2 diabetes.

Conclusions:

  • Accurate HF classification is crucial for guiding appropriate treatment.
  • The interplay between HF and T2DM requires careful consideration for optimal patient outcomes.
  • Integrated management strategies are essential for patients with both conditions.