Highlights the diagnostic challenge of idiopathic hypertrophic obstructive cardiomyopathy in infancy and suggests cross-sectional echocardiography to prevent misdiagnosis and inappropriate surgery.
An infant with idiopathic hypertrophic obstructive cardiomyopathy, presenting as severe right ventricular outflow obstruction, is described. The nonspecific clinical features and an unexpected angiocardiographic appearance made determining the correct diagnosis difficult. This infant was mistakenly diagnosed as having severe pulmonary stenosis. Attempted surgical correction was unsuccessful and at necropsy this diagnosis was confirmed. It is suggested that cross-sectional echocardiography may be diagnostic for infants with idiopathic hypertrophic obstructive cardiomyopathy.
Matsumoto et al. (Sat,) studied this question.
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