Sustained SVT can cause what cardiac finding that typically results in hydrops
Dilated cardiomyopathy
What is the most common fetal anomaly that is associated with complete heart block?
Left atrial isomerism
The SVC is located ________ of the ascending aorta
Posterior and to the right
The azygos vein delivers __________ to the SVC
Deoxygenated blood from the posterior wall of the thorax and abdomen
What vein travels from the mid abdomen to the upper mediastinum?
Azygos vein
The ________ courses vertically, anterior to the brachiocephalic artery
Right brachiocephalic vein
The left brachiocephalic vein courses ________ and is ________ to the 3 aortic arch branches and _______ to the thymus
You can visualize it by _________
Horizontally
Anterior
Posterior
Sweeping cephalad to the 3VT view
What flow is this? Is it normal or abnormal?
IVC normal
IT IS TRIPHASIC
What flow is this? Is it normal or abnormal?
IVC, abnormal
What pathology?
Interrupted IVC with azygos continuation (see double vessel sign)
What pathology?
LSVC
What 3 syndromes are associated with absent/agenesis of the ductus venosus?
What can it cause?
1) Noonan syndrome
2) Trisomy 13/18/21
3) Turners
—-can cause volume overload, increased cardiac output and hydrops
The MCA is most common method for evaluating for _______
It should be measured as close to ______
The flow starts out ________ In first trimester and then becomes _________ in 2nd and 3rd trimester
It normally has a higher resistance than _______
If there is increased diastolic flow it suggests _______
Diastolic flow reversal suggests_____
**Normal peak systolic value is _____
Moderate to severe is _____**
Anemia
The ICA as possible
With high pulsatility and no diastolic flow
Lower pulsatility with some antegrade diastolic flow
The umbilical artery.
Brain sparing and therefor IUGR
Pending fetal demise
**<1.3
> 1.5**
The umbilical cord usually has how many arteries and veins?
2 arteries, 1 vein
What pathology?
See UV pulsations
What pathology? Describe. What can it be confused with and how can you tell the difference? When does it occur?
Umbilical vein varix
A locally dilated segment of the umbilical vein
Can be confused with umbilical vein cyst. (Varix has color flow cysts dont)
Can occur when there is volume overload
ASSOCIATED WITH TRISOMY 21
When can a low S/D ratio and RI be normal?
UA flow is considered abnormal when ______
In 2nd and 3rd trimesters
Absence of diastolic flow or diastolic flow reversal
List 9 things you might see with IUGR
1) Abnormal UA flow (decreased/absent or reversed)
2) IVC flow reversal during atrial contraction
3) flow reversal at the aortic isthmus (for severe IUGR)
4) decreased PI in MCA
5) decreased cardiac output
6) decreased S/D ratio
7) mitral inflow E/A > 1.0
8) prolonged myocardial performance index
9) increased pulsatility of the ductus venosus
3 signs of fetal anemia:
1) high cardiac output
2) increased velocities in MCA, descending aorta, and umbilical vein
3) increased pulsatility and a wave reversal of ductus venosus
What pathology? And what are 2 names for it?
Skin edema (also called “Anasarca”)
TR severity scale:
Trivial — nonholosystolic <200m/sec
Mild—- holosystilic, 30-100m/sec
Mod—- 100-200m/sec
Severe—- >200m/sec
What is the most common tumor of the PLACENTA?
List 3 characterisitics of their appearance
And 3 things can it lead to?
Chorioangioma
Highly vascularlized, large hypoechoic mass near cord insertion
Heart failure, hydrops, Polyhydramnios
The IVC converges with the ductus venosus and what other structures? What do they merge into?
3 hepatic veins
Subdiaphragmatic vestibules
Most cases of interrupted IVC are related to ______ (what percent?)
Left atrial isomerism (80%)