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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 II: Pathophysiology01:29

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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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Super-resolution Fluorescence Microscopy01:37

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Related Experiment Video

Updated: Dec 30, 2025

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
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Cellular and Molecular Differences between HFpEF and HFrEF: A Step Ahead in an Improved Pathological Understanding.

Steven J Simmonds1, Ilona Cuijpers1,2, Stephane Heymans1,2,3,4

  • 1Center for Molecular and Vascular Biology, KU Leuven, Herestraat 49, bus 911, 3000 Leuven, Belgium.

Cells
|January 23, 2020
PubMed
Summary

Heart failure with preserved ejection fraction (HFpEF) and reduced ejection fraction (HFrEF) have distinct pathological pathways. Understanding these differences is crucial for developing targeted treatments for both heart failure conditions.

Keywords:
cardiomyocyte alterationsendothelial dysfunctionheart failure with preserved ejection fractionheart failure with reduced ejection fractioninflammation

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Area of Science:

  • Cardiology
  • Pathophysiology
  • Molecular Biology

Background:

  • Heart failure (HF) is a growing global cardiovascular health burden.
  • HF is categorized by ejection fraction (EF): reduced (HFrEF), mid-range (HFmrEF), and preserved (HFpEF).
  • Current HFrEF treatments are ineffective for HFpEF, necessitating a deeper understanding of their distinct pathologies.

Purpose of the Study:

  • To summarize the differing pathological development of HFrEF and HFpEF.
  • To focus on disease-specific aspects including inflammation, endothelial function, cardiomyocyte changes, titin alterations, and fibrosis.
  • To guide future research for novel therapeutics for both HFrEF and HFpEF.

Main Methods:

  • Review of current literature on HFrEF and HFpEF pathogenesis.
  • Comparative analysis of cellular and molecular differences.
  • Identification of key pathological distinctions.

Main Results:

  • HFrEF and HFpEF exhibit unique cellular and molecular changes.
  • Differences in inflammation, endothelial function, cardiomyocyte hypertrophy/death, titin structure, and fibrosis are observed.
  • HFmrEF shares phenotypic traits with HFrEF, particularly coronary artery disease.

Conclusions:

  • Distinct pathological mechanisms underlie HFrEF and HFpEF.
  • Targeted therapeutic strategies are needed for each HF subtype.
  • Further research into these specific pathways will drive the development of novel treatments.