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Related Concept Videos

Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

551
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...
551
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

578
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...
578
Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

Cardiomyopathy VII: Pre and Post Operative Nursing Management

404
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...
404
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

677
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,...
677
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

658
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...
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Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

386
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
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Related Experiment Video

Updated: Mar 2, 2026

Isolation and Functional Characterization of Human Ventricular Cardiomyocytes from Fresh Surgical Samples
14:39

Isolation and Functional Characterization of Human Ventricular Cardiomyocytes from Fresh Surgical Samples

Published on: April 21, 2014

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Surgery for hypertrophic cardiomyopathy.

James J Wu1,2,3, Michael Seco1,2,3, Caroline Medi4,5

  • 1Sydney Medical School, The University of Sydney, Sydney, Australia.

Biophysical Reviews
|May 17, 2017
PubMed
Summary
This summary is machine-generated.

Septal myectomy effectively treats hypertrophic cardiomyopathy (HCM) by relieving left ventricular outflow tract obstruction. This surgery offers excellent long-term survival and symptom relief for HCM patients.

Keywords:
Alcohol septal ablationHypertrophic cardiomyopathyLeft ventricular outflow tract obstructionSeptal myectomy

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Genetics

Background:

  • Hypertrophic cardiomyopathy (HCM) is a genetic heart condition causing unexplained left ventricular hypertrophy.
  • HCM is a leading cause of sudden cardiac death in young adults, often due to arrhythmias.
  • Left ventricular outflow tract obstruction can occur in HCM patients.

Purpose of the Study:

  • To evaluate the efficacy and outcomes of septal myectomy for treating symptomatic hypertrophic cardiomyopathy with outflow tract obstruction.
  • To assess the safety, long-term survival, and symptom relief provided by surgical intervention in HCM patients.

Main Methods:

  • Septal myectomy involves surgically removing a portion of the hypertrophied interventricular septum.
  • Surgical access is achieved through transaortic, transapical, or transmitral approaches.
  • Data from large, contemporary series of experienced centers were analyzed.

Main Results:

  • Septal myectomy demonstrated a low early mortality rate of less than 2%.
  • Patients experienced excellent long-term survival, comparable to the general population.
  • The procedure provided durable relief of symptoms associated with outflow tract obstruction.

Conclusions:

  • Septal myectomy is a safe and effective surgical treatment for hypertrophic cardiomyopathy with moderate to severe outflow tract obstruction.
  • The procedure offers significant long-term benefits, including improved survival and sustained symptom resolution.
  • It is indicated for patients with severe symptoms unresponsive to medical management.