Fetal Growth Restriction Flashcards
What is the definition of fetal growth restriction?
Fetus with EFW < 10%
What is the definition of small for gestational age
Infant with birthweight < 10%
What is the definition of low birth weight?
Infant with birth weight < 2500g
What are the short term risks with FGR?
Mec aspiration, hypoglycemia, hypothermia, polycythemia, hyponatremia, hypocalcemia
What are the long term risks with FGR?
slightly smaller adults, 2 x increase in major neurologic problems, increased risk of CV disease, increased risk of diabetes
What specific type of placental disorder can cause FGR?
Circumvallate placenta
What two types of placental disorders DO NOT cause FGR?
Placenta accreta, placenta previa
If you have had one pregnancy complicated by FGR what is the risk of having a recurrence?
25%
If you have had one pregnancy complicated by FGR what is the risk of having a recurrence?
25%
What two serum component of the first trimester screen indicates possible FGR?
Low PAPP-A, high AFP
What is the first early US finding associated with FGR?
Abdominal circumference
What happens to the FL/AC ratio and the HC/AC ration with an FGR baby?
Increase ratio as AC decreases
Symmetric FGR indicates what about the timing of occurence in pregnancy?
Problem causing IUGR happens in early pregnancy
Asymmetric FGR suggests what about the timing of occurrence in preganancy?
Problem causing IUGR happens late in pregnancy
What proportion of all FGR is assymetric?
80%
What percent of FGR pregnancies also have Oligohydramnios?
75%
As FGR worsens the S/D ratio generally ______ as the diastolic flow _____.
Increases, Decreases
Where should the S/D ratio be measured?
Free loop of chord
What is an abnormal S/D ratio
> 2 SD above the mean
At 30 weeks what is the normal S/D ratio
3.0
At term what is the normal S/D ratio
< 3.0
What gestational age should you start fetal surveillance for FGR?
28 wga
When should you plan to deliver a fetus with isolated FGR?
38.0 - 39.6
When should you plan to deliver a fetus with FGR and an elevated UA S/D ratio
37 wga
When should you plan to deliver a fetus with FGR and AEDF?
34 wga
When should you plan to deliver a fetus with FGR and REDF
32 wga
When should you plan to deliver a fetus with FGR and oligo, PreE, cHTN, ect
34wga - 37wga
