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Related Concept Videos

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...
14
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

11
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,...
11
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

51
Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
51
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

12
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...
12
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

16
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...
16
Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

Cardiomyopathy VII: Pre and Post Operative Nursing Management

15
Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
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Related Experiment Video

Updated: Jul 16, 2025

Reduction in Left Ventricular Wall Stress and Improvement in Function in Failing Hearts using Algisyl-LVR
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[Myocardial revascularization in left ventricular dysfunction].

Armando L Godoy-Palomino1,2

  • 1Instituto Nacional Cardiovascular INCOR, Servicio de Cardiología no Invasiva.

Archivos Peruanos De Cardiologia Y Cirugia Cardiovascular
|September 20, 2023
PubMed
Summary

Surgical revascularization for heart failure shows mixed results. While guidelines support it, recent trials question its benefit over optimal medical therapy alone, especially for identifying myocardial viability.

Keywords:
Heart FailureMyocardial RevascularizationVentricular Dysfunction

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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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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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Last Updated: Jul 16, 2025

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Heart Failure Research

Context:

  • Left ventricular dysfunction from adverse remodeling is a key factor in heart failure, often resulting from coronary artery disease.
  • Surgical myocardial revascularization is traditionally considered for this condition.
  • Current treatment guidelines are based on prior clinical trial data.

Purpose:

  • To evaluate the efficacy of surgical revascularization in patients with left ventricular dysfunction.
  • To assess the role of myocardial viability identification in guiding revascularization decisions.
  • To reconcile conflicting evidence regarding revascularization benefits.

Summary:

  • Recent studies indicate no added benefit of surgical revascularization plus optimal medical therapy (OMT) compared to OMT alone.
  • The identification of myocardial viability did not favorably predict outcomes in these trials.
  • Extension trials suggested a benefit of revascularization, but viability detection remained problematic, and improved ejection fraction did not correlate with reduced mortality.

Impact:

  • Challenges the established role of revascularization in certain heart failure scenarios.
  • Highlights the need for refined strategies in identifying patients who benefit from surgical intervention.
  • Underscores ongoing debate and research into optimal heart failure management and revascularization guidance.