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Purpose : The easy recognition and characterization of a discrete or fixed subaortic ridge by echocardiography provides a method for prospective study of the coexistence of ventricular septal defect(VSD) and subaortic ridge. In the presence of a VSD, a subaortic ridge may be clinically silent, but the obstruction can progress if the VSD is surgically or spontaneously closed. This study... |
