What are the anatomic characteristics of RVOTO in adults with tetralogy of Fallot (TOF)?

Updated: Nov 13, 2018
  • Author: Shabir Bhimji, MD, PhD; Chief Editor: Yasmine S Ali, MD, FACC, FACP, MSCI  more...
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Answer

In the majority of adults with tetralogy of Fallot,  there is resistance to RV emptying. The obstruction is caused by the anterior displacement and rotation of the infundibular septum which narrows the outflow tract. The infundibular obstruction may be associated with pulmonary valve stenosis or atresia, which results in further outflow tract obstruction.


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