CATAD51

  • What is the mortality of TGA at 1 month?
    • 50% (90% at 1 year).
  • TGA is more common in which sex?
    • Male.
  • Which discordance is common to D-TGA and L-TGA?
    • VA discordance.
  • What is the Van Praagh denotation for TGA?
    • S, D, D
  • What are the associated anomalies allowed in simple TGA?
    • VSD, PDA and LVOTO.
  • Which continuity is present in TGA?
    • Pulmonary – mitral (aortic – tricuspid is absent).
  • In TGA, infundibulum is on which side?
    • Right (normally, left; subaortic infundibulum in TGA)
  • In atrial switch surgeries, which artery is likely to be damaged?
    • Sinus nodal artery.
  • Which coronary sinuses give rise to coronaries in TGA?
    • The facing or septal sinuses.
  • Which is the commonest coexisting anomaly in TGA?
    • VSD
  • How does VSD affect LVOTO in TGA?
    • LVOTO is more severe if VSD is present.
  • What is the peculiarity of LVOTO in TGA with IVS?
    • It is dynamic (present in systole only).
  • What happens to tricuspid-mitral annular circumference ratio in TGA?
    • < 1 in 50%.
  • How does presence of bronchopulmonary collaterals affect calculation of PVR in TGA?
    • Underestimation of PVR occurs due to overestimation of PBF.
  • What is the pulmonary maldistribution in TGA?
    • Greater blood flow to right lung.
  • In the fetus with TGA, RV pumps into which part of aorta?
    • Ascending (normal- descending).
  • In the fetus with TGA, IVC blood goes to which part of the body?
    • Lower (normal- upper).