RESUMO
Hypertrophic cardiomyopathy(HCM)is the second commonest form of heart muscle disease affecting children and adolescents and is a leading cause of sudden death in young athletes. The aetiology of HCM is heterogeneous in the paediatric population,and includes inborn errors of metabolism,neuromuscular disorders and malformation syndromes.However,most cases of apparently idiopathic HCM in childhood are caused by mutations in cardiac sarcomere protein genes. Hypertrophic obstructive cardiomyopathy(HOCM) is not uncommon in children who don't respond to drug treatment;for such children,surgical treatment is the only solution.Previous routine surgical methods include modified Konno operation,modified extended Morrow operation and interventional alcohol ablation or radiofrequency ablation for pediatric patients. At present,the reports and large-scale clinical experience are rare.