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  2. Library: Fetal CHD Image Library
  3. Lesion: Truncus Arteriosus
  4. View: Fetal Truncus Arteriosus
  • Truncus arteriosus
    • Four chamber view in fetus with truncus arteriosus
  • Truncus arteriosus
    • Truncal valve overridding the ventricular septum
    • Large outlet VSD
    • AV= truncal valve
  • Truncus Arteriosus
    • Thickened truncal valve with rolled leaflets
    • Large outlet VSD with truncal valve overriding the native ventricular septum
  • Truncus Arteriosus 
    • Thickened truncal valve
    • Truncal valve overrides the native ventricular septum
    • Outlet VSD
    • Flow turbulence across the dysplastic truncal valve is noted
    • Mild truncal regurgitation
  • Truncus arteriosus
    • Color Doppler across the truncal valve and a large outlet VSD
  • Truncus arteriosus
    • Type I truncus arteriosus 
      • Confluent branch pulmonary arteries arise from the ascending truncal vessel with short main pulmonary artery 
      • AV= truncal valve
  • Truncus arteriosus
    • Type I truncus arteriosus 
      • Confluent branch pulmonary arteries arise from the ascending truncal vessel with short main pulmonary artery segment
      • AV = truncal valve
  • Truncus Arteriosus Type II 
    • Right and left branch pulmonary arteries arise adjacent to each other from the posterolateral segment of the common trunk 
  • Truncus Arteriosus Type II 
    • Sweep between the truncal valve (en face) and ascending trunk 
    • Quadricuspid truncal valve
    • Right and left branch pulmonary arteries arise adjacent to each other from the posterolateral segment of the common trunk 
  • Truncus Arteriosus Type II 
    • Thickened truncal valve
    • Right and left branch pulmonary arteries arise adjacent to each other from the posterolateral segment of the common trunk 
  • Truncus Arteriosus Type II 
    • Right and left branch pulmonary arteries arise adjacent to each other from the posterolateral segment of the common trunk 
  • Truncus Arteriosus 
    • Quadricuspid truncal valve

These are fetal echocardiographic examples of truncus arteriosus. 

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