Tetralogy of Fallot With Absent Pulmonary Valve Differential Diagnoses

Updated: Dec 28, 2020
  • Author: Prema Ramaswamy, MD; Chief Editor: Howard S Weber, MD, FSCAI  more...
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Diagnostic Considerations

Absent pulmonary valve syndrome may occur in isolation without the presence of a ventricular septal defect (VSD). This rare anomaly usually causes severe distress at birth, especially when associated with a patent ductus arteriosus (PDA), because it can result in severe right ventricular (RV) dysfunction. [1]

A pulmonary artery may arise directly from the aorta. Absence of the left pulmonary artery has been reported. A nonrestrictive ductus arteriosus is more likely to be present in this scenario. [20]

Differential Diagnoses