Abnormalities
Absence of the falx cerebri most strongly suggests what major abnormality?
Holoprescencephaly
Free fluid in Morrison’s pouch in early pregnancy with pain suggests what complication?
Ruptured ectopic
Oligohydramnios is defined as AFI less than what?
Less than 5cm
hCG should approximately double every how many hours in early viable pregnancy?
48houra
When do hCG levels begin to decline after peaking?
After 10 weeks
Banana sign and lemon sign together are most associated with what condition?
Spina bfida
An adnexal mass with peripheral vascularity and no IUP in the setting of high hCG suggests what?
Ectopic pregnancy
Renal pelvis measurement greater than what value in the third trimester suggests hydronephrosis?
Greater than 10mm
Organogenesis is complete by approximately what gestational week?
10
When does the placenta become the dominant source of progesterone?
10-12weeks
Extremely high hCG, snowstorm uterus, bilateral theca lutein cysts indicates what diagnosis?
A placenta implanted over the internal os is classified as what?
Placenta priva
Cord mass measurement
4-7mm
Parity is counted for pregnancies reaching what gestational age?
20weeks
When does the embryonic period end?
End of week 10
gestational sac located eccentrically within the endometrium supports what diagnosis?
True pregnancy
Positive pregnancy test, adnexal mass, free fluid in Morrison’s pouch.
Ectopic
Polyhydramnios is defined as AFI greater than what (per your notes)?
More than 22
Adult heart configuration
Week 8
When should physiologic bowel herniation no longer be seen?
12 weeks
Agenesis of the corpus callosum is often suspected when which midline structure is absent?
CSP
MSD = 22 mm. No embryo visualized.
Diagnosis?
Anembroynic preg
Renal pelvis measurement in second trimester is abnormal when greater than what?
7mm
Corpus luteum typically regresses by what gestational age if pregnancy continues normally?
16-18weeks
yolk stalk and body stalk fuse at
Week 6