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  2. Library: Fetal CHD Image Library
  3. Lesion: Interrupted Aortic Arch
  4. View: Fetal Interrupted Aortic Arch
  • Fetal Interrupted Aortic Arch
    • Posterior malalignment VSD
    • Posterior deviation of the conal septum causing narrowing of the left ventricular outflow tract
    • Hypoplastic aortic valve
  • Fetal Interrupted Aortic Arch
    • Posterior malalignment VSD with bidirectional shunting
    • Posterior deviation of the conal septum causing narrowing of the left ventricular outflow tract
    • Hypoplastic aortic valve
    • Flow turbulence noted across the subaortic region and aortic valve consistent with subaortic and aortic valve stenosis
  • Fetal Interrupted Aortic Arch
    • Ascending aorta travels superiorly towards head and does not connect to transverse arch consistent with interruption
    • Ductal arch (PDA) seen with one head and neck vessel (represented by the star) arising from the ductal arch
  • Fetal Interrupted Aortic Arch
    • Ductal arch seen giving rise to two head and neck vessels (represented by the stars)
      • Most distal vessel likely left subclavian artery
      • More proximal vessel either left carotid (making it a Type C IAA) versus aberrant right subclavian artery (making it a Type B IAA with aberrant right subclavian artery)
  • Fetal Interrupted Aortic Arch
    • Sweep between ascending aorta (red flow traveling towards superiorly towards head) and ductal arch (red transversely oriented flow)
    • The aortic arch does not connect consistent with interruption
    • Ductal arch seen giving rise to two head and neck vessels
      • Most distal vessel likely left subclavian artery
      • More proximal vessel either left carotid (making it a Type C IAA) versus aberrant right subclavian artery (making it a Type B IAA with aberrant right subclavian artery)
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