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Cardiomyopathy IV: Restrictive Cardiomyopathy

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy I: Introduction and Classification

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...

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...

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...

Cardiomyopathy II: Dilated Cardiomyopathy

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...

Myocarditis I: Introduction

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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...

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Related Experiment Video

Updated: Jul 6, 2026

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

Published on: June 14, 2016

Right ventricular endomyocardial fibrosis.

Ana Olga H Mocumbi¹, Magdi H Yacoub, Hideky Yokohama

¹Imperial College, NHLI SW7 2AZ, London, United Kingdom. a.mocumbi@imperial.ac.uk

Cardiovascular Pathology : the Official Journal of the Society for Cardiovascular Pathology

|April 12, 2008

Summary

Endomyocardial fibrosis (EMF) is a fatal heart condition affecting tropical regions. Early diagnosis and understanding its causes are crucial for improving outcomes in children and young adults.

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Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

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Area of Science:

Cardiology
Tropical Medicine
Pathology

Background:

Endomyocardial fibrosis (EMF) is a neglected tropical cardiomyopathy prevalent in Africa, Asia, and South America.
It primarily affects children and young adults, characterized by fibrosis of the heart's inner lining.

Observation:

The hallmark of EMF is endocardial fibrosis, leading to restrictive diastolic filling and severe atrial dilation.
A case study details a 14-year-old boy who succumbed to progressive heart failure from right ventricular EMF.

Findings:

The case highlights advanced pathological findings in EMF.
Late presentation significantly contributes to the poor prognosis of this condition.

Implications:

There is an urgent need for early diagnostic methods for EMF.
Further research into the pathogenesis of EMF is essential to improve patient outcomes.
Understanding EMF is critical for managing this debilitating and fatal disease.