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Related Concept Videos

Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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...
Cardiomyopathy I: Introduction and Classification01:25

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 V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

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,...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

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...
Heart Failure II: Pathophysiology01:29

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...

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Related Experiment Video

Updated: Jun 21, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
03:45

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

Published on: August 8, 2022

Hypertrophic cardiomyopathy.

Jeffrey A Towbin1

  • 1The Heart Center, Division of Pediatric Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA. Jeffrey.towbin@cchmc.org

Pacing and Clinical Electrophysiology : PACE
|July 16, 2009
PubMed
Summary
This summary is machine-generated.

Hypertrophic cardiomyopathy (HCM) is a common inherited heart disorder. Childhood HCM presents with varied etiologies, influencing diagnosis and outcomes differently than adult forms.

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Area of Science:

  • Cardiology
  • Genetics
  • Pediatrics

Background:

  • Hypertrophic cardiomyopathy (HCM) is a prevalent inherited cardiac disorder affecting 1 in 500 young adults.
  • It is characterized by significant myocardial wall thickening.
  • HCM is a leading cause of sudden cardiac death in young athletes.

Purpose of the Study:

  • To review the clinical impacts of inherited hypertrophic cardiomyopathy.
  • To discuss underlying etiologies and diverse clinical presentations.
  • To differentiate childhood and adult forms of HCM based on literature and clinical experience.

Main Methods:

  • Literature review and clinical experience synthesis.
  • Analysis of morphologic, functional, and clinical features.
  • Comparison of disease presentation across different age groups.

Main Results:

  • In infants (<1 year), hypertrophy with systolic dysfunction is common.
  • In young adults, HCM prevalence is 0.2%, often with diastolic dysfunction.
  • Childhood HCM can present with overlapping disorders, complicating diagnosis and treatment.

Conclusions:

  • Childhood hypertrophic cardiomyopathy (HCM) arises from diverse etiologies.
  • These varied causes impact diagnostic approaches.
  • Etiologies significantly influence treatment strategies and patient outcomes in pediatric HCM.