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Related Concept Videos

Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

751
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...
751
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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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,...
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Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

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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...
605
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

643
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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Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

310
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
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Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

775
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...
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Related Experiment Video

Updated: Mar 20, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

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Cardiac resynchronization therapy for ischemic myopathy.

Shinichiro Ikeda1, Hideo Yoshida1, Keiji Yunoki1

  • 1Cardiovascular Surgery Department, Hiroshima City Hospital, Hiroshima, Japan.

Asian Cardiovascular & Thoracic Annals
|May 27, 2016
PubMed
Summary
This summary is machine-generated.

This study shows cardiac resynchronization therapy (CRT) combined with valve surgery effectively treated a patient with coronary disease and heart failure. CRT improved heart function and reduced symptoms, improving the patient's quality of life.

Keywords:
Cardiac resynchronization therapyDyssynchronous wall motionIschemic myopathy

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Electrophysiology

Background:

  • A 75-year-old male presented with double-vessel coronary artery disease and moderate mitral and tricuspid valve insufficiency.
  • Preoperative assessment revealed a reduced ejection fraction of 34% and significant septal and free wall dyssynchrony.

Observation:

  • The patient underwent coronary artery grafting, mitral valve plasty, and tricuspid valve plasty.
  • Cardiac resynchronization therapy (CRT) was implemented with pacing leads placed on the right ventricular outlet and posterior left ventricular wall.

Findings:

  • Postoperative echocardiography confirmed the resolution of cardiac dyssynchrony.
  • The patient experienced a significant improvement in New York Heart Association functional class, from IV to I.

Implications:

  • Combined surgical intervention and CRT can effectively manage complex cardiac conditions.
  • This approach offers a promising strategy for improving cardiac function and patient outcomes in severe heart failure with dyssynchrony.