Sudden cardiac death in inherited cardiomyopathy

R Collis1, P M Elliott1

  • 1Institute of Cardiovascular Science, University College London, Gower Street, London WC1E 6BT, United Kingdom.

Insights

Cardiomyopathy increases sudden cardiac death risk in young people. Thorough clinical assessment identifies at-risk individuals for prophylactic implantable cardioverter-defibrillator (ICD) therapy.

Area of Science:

  • Cardiology
  • Sudden Cardiac Death Research

Background:

  • Cardiomyopathy is a significant cause of sudden cardiac death (SCD), especially in adolescents and young adults.
  • The risk of SCD in cardiomyopathy varies based on disease type, severity, age, and gender.

Purpose of the Study:

  • To emphasize the critical role of systematic clinical assessment in managing cardiomyopathy.
  • To identify individuals at high risk for SCD who may benefit from prophylactic therapy.

Main Methods:

  • Review of clinical management strategies for cardiomyopathy.
  • Analysis of risk factors contributing to sudden cardiac death in various cardiomyopathies.

Main Results:

  • Sudden cardiac death risk is heterogeneous among cardiomyopathy types.
  • Age and gender are important determinants of SCD risk.
  • Prophylactic implantable cardioverter-defibrillator (ICD) therapy can protect select high-risk individuals.

Conclusions:

  • A thorough clinical evaluation is fundamental for managing cardiomyopathy.
  • Early identification of high-risk patients is crucial for preventing SCD.
  • Prophylactic ICD implantation is a key strategy for at-risk individuals.

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...
578
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...
704
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,...
675
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...
658
Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
491
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...
551