cyanotic Flashcards
Fetal ECHO sign for TOF
Pulm annulus equal to Ao valve annulus or smaller (normal PA>Ao)
Risky features of TOF fetal echo
If PA<50% of Ao, increased risk of obstruction, PGE requirement, neonatal repair
fetal cutoffs for TOF
PA/Ao annulus ratio
normal PA>Ao
TOF PA increased risk of obstruction, PGE requirement, neonatal repair
also, retrograde ductal flow
what is tausig bing
DORV with malposed great vessels, subpulmonic VSD, TGA physiology, watch for subAS and coarct/IAA
which type of DORV gives you IAA
taussig bing (subpulm VSD)
in DORV, what does location of VSD tell you
where oxygenated blood flows _. physiology
Tri atresia vs. DILV, which is more likely NRGV
tri atresia more likely NRGV (VSD may get smaller overtime)
ddx cyanotic neonate with wet lungs
Truncus, Transposition, TAPVR w/ obstruction
DILV physiology, more likely NRGV or TGA?
more likely TGA (70-80%) left handed (RV to the left) in 60%, right handed with TGA in 20%, right handed NRGV in 15% (Holmes heart
holmes heart
DILV, NRGV (only 15% of DILVs) no associated coarct
DILV, NRGV
Holmes heart
clue for atrial restriction in D-TGA
hard to do, redundant tissue is the main feature, more redundant, less likely restrictive
also ASD ratio (how far does the atrial septum lean into the LA)
what is the ASD ratio
fetal echo of D-TGA, predicts restriction, prefer that it goes way over to the left atrial free wall (>0.5)
atial septal redundancy
in fetal echo, D-TGA, more redundant, less likely restrictive
what are AH-LRSA, HV?
atrium to His (spans AV node), low right septal atrium(AV node only), HV = His to ventricle
