title: Rapid evolution from "normal" left ventricular outflow tract to fatal subaortic stenosis in infancy.
abstract: Serial clinical, echocardiographic, haemodynamic, and angiocardiographic data support the conclusion that over four months severe discrete subaortic stenosis evolved from a previously angiocardiographically normal left ventricular outflow tract in an infant who had a successful repair of thoracic aortic coarctation. This case supports those who suggest that a myocardial factor may play an important role in the change in form and function of some congenitally malformed hearts.
mesh_terms: D000790:Angiocardiography; D001017:Aortic Coarctation / Q000150:complications / Q000503:physiopathology; D001020:Aortic Stenosis, Subvalvular / Q000209:etiology*; D002312:Cardiomyopathy, Hypertrophic / Q000209:etiology*; D004452:Echocardiography; D006352:Heart Ventricles / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D008297:Male; D013997:Time Factors