Hypertrophic cardiomyopathy in children

Area of Science:

• Pediatric Cardiology
• Genetics
• Cardiovascular Medicine

Background:

• Hypertrophic cardiomyopathy (HCM) is the second most frequent heart muscle disease in children and adolescents.
• It is a primary cause of sudden cardiac death in young athletes.
• The causes of pediatric HCM are diverse, including metabolic disorders, neuromuscular conditions, and genetic mutations in sarcomere protein genes.

Purpose of the Study:

• To summarize the current understanding of hypertrophic cardiomyopathy in the pediatric population.
• To highlight the heterogeneous etiology and diagnostic approaches for pediatric HCM.
• To emphasize the importance of risk stratification and family screening in managing pediatric HCM.

Main Methods:

• Review of existing literature on pediatric hypertrophic cardiomyopathy.
• Analysis of etiological factors, clinical presentation, and diagnostic strategies.
• Discussion of risk stratification challenges and management recommendations.

Main Results:

• Pediatric HCM has varied causes, with genetic mutations being the most common for idiopathic cases.
• Clinical presentation differs based on etiology, with metabolic/syndromic cases often appearing in infancy and neuromuscular cases in adolescence.
• Diagnosis in infants often follows murmur or heart failure evaluation, while older children present with symptoms or are identified through family screening.

Conclusions:

• Genetic factors are predominant in childhood HCM, necessitating genetic counseling and testing.
• Early diagnosis and comprehensive family screening are essential for effective management and risk reduction.
• Risk stratification in pediatric HCM remains a significant clinical challenge requiring further research.