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Related Concept Videos

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 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 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 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...
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...
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...

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Related Experiment Video

Updated: Jun 15, 2026

A Doxorubicin-Induced Murine Model of Dilated Cardiomyopathy In Vivo
05:14

A Doxorubicin-Induced Murine Model of Dilated Cardiomyopathy In Vivo

Published on: May 16, 2020

Dilated cardiomyopathy.

John Lynn Jefferies1, Jeffrey A Towbin

  • 1Pediatric Cardiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA.

Lancet (London, England)
|March 2, 2010
PubMed
Summary
This summary is machine-generated.

Dilated cardiomyopathy involves enlarged heart ventricles and impaired pumping function, leading to heart failure and sudden death risks. Genetic factors and toxins contribute, necessitating improved treatment strategies for better patient outcomes.

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Area of Science:

  • Cardiology
  • Genetics
  • Pathophysiology

Background:

  • Dilated cardiomyopathy (DCM) is defined by left ventricular dilation and systolic dysfunction.
  • It can progress to diastolic dysfunction, right ventricular impairment, and heart failure.
  • Patients face risks of arrhythmias, syncope, and sudden cardiac death.

Purpose of the Study:

  • To summarize the key characteristics, causes, and management of dilated cardiomyopathy.
  • To highlight the genetic and environmental factors contributing to DCM.
  • To underscore the ongoing need for improved therapeutic outcomes.

Main Methods:

  • Review of existing literature on dilated cardiomyopathy.
  • Analysis of genetic and etiological factors.
  • Summary of current treatment approaches and outcomes.

Main Results:

  • DCM affects cardiac efficiency, with genetic factors in 30-48% of cases.
  • Causes include cytoskeletal/sarcomeric protein gene mutations, toxins, and inflammation (e.g., myocarditis).
  • In children, mitochondrial dysfunction and metabolic issues are implicated.

Conclusions:

  • Current treatments aim to enhance cardiac efficiency and reduce mechanical stress.
  • Arrhythmia management and sudden death prevention are critical.
  • Despite advancements, improving patient outcomes in dilated cardiomyopathy remains a priority.