<prompt> Essential criteria for TOF includes all exceptValvular stenosisInfundibular stenosisOver riding of aoaRVH  <response>: The four components of the tetralogy of Fallot are malaligned VSD, obstruction to RV outflow, aoic override of the VSD, and RV hyperophy due to the RVs response to aoic pressure the large VSD. Harrison;s principle of internal medicine,18th edition,pg no. 1926 