Cardiomyopathy is a serious disorder of the heart muscle and, although rare, is a common
cause of heart failure in children, and it is also the most common cause of heart
transplantation in children older than 1 year of age. 1–4 Although cardiomyopathy has
various functional types, the vast majority of children with this diagnosis have either a dilated
or a hypertrophic type, both of which are associated with abnormal cardiac structure and
function and poor outcomes. The true incidence, prevalence, risk factors, causes, and …