Large subaortic VSD with aortic override – echocardiogram

Large subaortic VSD with aortic override – echocardiogram

Subaortic VSD with aortic overrideLarge subaortic ventricular septal defect with aortic override seen on echocardiogram from the parasternal long axis view. Such large subaortic VSD with aortic override can be seen in tetralogy of Fallot and double outlet right ventricle. From the surgeon’s point of view, if the override is more than 50%, it is considered as DORV rather than TOF. Here the override is less than 50% and hence in favour of TOF rather than DORV.

Pulmonary atresia with subaortic VSD, which can be considered as an extreme variant of TOF can also have a similar picture on parasternal long axis view. A similar appearance can be seen with the subtruncal VSD in truncus arteriousus.