Hypertrophic cardiomyopathy in children

Shuiyun Wang1, Changsheng Zhu1

  • 1Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, 571193Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Insights

Hypertrophic cardiomyopathy (HCM) in young people is a leading cause of sudden cardiac death (SCD). Surgical treatment and implantable cardioverter-defibrillators (ICDs) offer effective strategies for managing pediatric HCM and preventing SCD.

Area of Science:

  • Cardiology
  • Pediatric Medicine
  • Sudden Cardiac Death Research

Background:

  • Hypertrophic cardiomyopathy (HCM) is the most frequent cause of sudden cardiac death (SCD) in young individuals.
  • The causes and prognosis of pediatric HCM vary significantly based on presentation age and etiology.
  • Obstructive HCM in children presents complex challenges, yet surgical interventions can yield favorable outcomes.

Purpose of the Study:

  • To review the diverse etiologies and prognostic factors influencing pediatric hypertrophic cardiomyopathy.
  • To evaluate the efficacy of surgical treatment for obstructive HCM in carefully selected pediatric patients.
  • To discuss the role of implantable cardioverter-defibrillators (ICDs) in preventing SCD in pediatric HCM patients.

Main Methods:

  • Literature review of pediatric hypertrophic cardiomyopathy cases.
  • Analysis of outcomes for surgical interventions in obstructive HCM.
  • Assessment of current strategies for sudden cardiac death prevention using ICDs.

Main Results:

  • Surgical treatment in experienced centers provides favorable outcomes for selected pediatric obstructive HCM patients.
  • Implantable cardioverter-defibrillators (ICDs) are the most effective method for preventing sudden cardiac death.
  • A novel pediatric SCD risk prediction model shows promise for identifying patients who would benefit most from ICD implantation.

Conclusions:

  • Pediatric hypertrophic cardiomyopathy requires individualized management strategies based on etiology and presentation.
  • Surgical intervention and ICDs are crucial for improving outcomes and preventing sudden cardiac death in young patients with HCM.
  • Further refinement of pediatric SCD risk prediction models is needed to optimize ICD implantation decisions.

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...
94
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...
127
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...
67
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,...
77
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...
116
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
104