The following features are true for tetralogy of Fallot, EXCEPT:
Ventricular septal defect
Right ventricular hyperophy
Atrial septal defect
Pulmonary stenosis
The four constituents of Tetralogy of Fallot are ventricular septal defect, pulmonic stenosis, overriding of aoa and right ventricular hyperophy. ADS is not a component of TOF. Ref: Essential Pediatrics, 6th Edition By O P Ghai, Pages 406-8.