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Heart Failure II: Pathophysiology

Heart Failure II: Pathophysiology

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...

Mitral Regurgitation I: Introduction

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...

Pathophysiology of Heart Failure

Pathophysiology of Heart Failure

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...

Mitral Stenosis I: Introduction

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...

Aortic Regurgitation I: Introduction

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...

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Related Experiment Video

Updated: Jul 15, 2026

Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding

Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding

Published on: August 30, 2024

Pathophysiological basis of right ventricular remodeling.

Marcus Kret¹, Rohit Arora

¹Department of Medicine, Chicago Medical School, 3001 Green Bay Road, North Chicago, IL 60064, USA.

Journal of Cardiovascular Pharmacology and Therapeutics

|May 15, 2007

Summary

Right ventricular (RV) remodeling involves complex geometric and cellular changes, distinct from left ventricular (LV) remodeling. Understanding these unique RV alterations is crucial for managing related heart conditions.

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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

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Published on: October 28, 2020

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Last Updated: Jul 15, 2026

Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding

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Published on: August 30, 2024

Permanent Ligation of the Left Anterior Descending Coronary Artery in Mice: A Model of Post-myocardial Infarction Remodelling and Heart Failure

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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Published on: October 28, 2020

Area of Science:

Cardiology
Cardiovascular Physiology

Background:

Right ventricular (RV) remodeling is a complex pathophysiological process.
It presents unique geometric and cellular characteristics distinct from left ventricular (LV) remodeling.
RV remodeling is associated with various cardiovascular diseases and can lead to significant functional decline.

Purpose of the Study:

To elucidate the unique pathophysiological mechanisms of RV remodeling.
To highlight the differences between RV and LV remodeling.
To review current assessment methods and therapeutic strategies for RV remodeling.

Main Methods:

Review of existing literature on RV remodeling pathophysiology.
Analysis of geometric, cellular, and hemodynamic changes in the RV.
Comparison of assessment techniques like cine MRI and 3-D echocardiography.

Main Results:

RV remodeling involves alterations in geometry, wall thickness, and pressure-volume relationships.
Myocyte dimensions, extracellular matrix, and biochemical milieu are modified.
Disease progression can result in hypertrophy, dilatation, and altered hemodynamics.

Conclusions:

RV remodeling is a multifaceted process with unique features.
Accurate assessment of RV hypertrophy requires advanced imaging techniques.
Pharmacological and invasive strategies are available for preventing RV remodeling.