When echocardiography provides the final diagnosis.
D009202:Cardiomyopathies / Q000175:diagnosis; D004452:Echocardiography; D004562:Electrocardiography; D004630:Emergencies; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006331:Heart Diseases / Q000175:diagnosis*; D006337:Heart Murmurs; D006349:Heart Valve Diseases / Q000175:diagnosis; D006801:Humans; D007231:Infant, Newborn