TY - JOUR T1 - Rapid evolution from "normal" left ventricular outflow tract to fatal subaortic stenosis in infancy. JF - British Heart Journal JO - Heart SP - 605 LP - 609 DO - 10.1136/hrt.45.5.605 VL - 45 IS - 5 AU - R M Freedom AU - R S Fowler AU - W J Duncan Y1 - 1981/05/01 UR - http://heart.bmj.com/content/45/5/605.abstract N2 - 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. ER -