OB Review #1

Measurements

100

Most accurate obstetrical measurement

CRL

200

Up to how many weeks can you accurate measure the CRL?

12 wks  6 days - 

at 13 weeks 0 days - no no longer valid

300

the MSD should increase ____ ___(UOM) every how many days?

1mm per day

400

nuchal translucency is measured placing the calipers where? - be specific

posterior neck area at widest portion inner to inner

500

true or false:  the femur measurement includes the diaphysis 

true

Anatomy

100

What is the name of the lateral posterior fontanelle used to evaluate the cerebellum and posterior brain structures?

mastoid fontanelle

200

what remnant of the Graafian follicle is seen through the first trimester?

corpus lutem

300

the placenta forms at which point on the uterus

implantation site

400

The placenta should be how far from the cervical os to not be considered low lying?

2cm

500

the thin membrane seen within the gestational sac is most likely what?

amnion

Labs

100

the blood test performed in the first trimester that is highly sensitive for down's syndrome 

PAPPA

200

2 reasons for lower than normal HCG

ectopic and demise

300

which lab causes pregnancy symptoms in mom

hcg

400

which lab is performed at 18 weeks and has been a standard marker for congenital probability

quad screen

500

what are the 2 types serum HCG can be ran?  

quantitative and qualitative

Findings

100

two names for an empty gestational sac

anembryonic 

blighted ovum

200

Patient presents with dark red spotting x 1 day, no pain, positive pregnancy test.  Ultrasound reveals an IUP (intra-uterine pregnancy) with a hypoechoic structure adjacent to the gestational sac.  Most likely diagnosis

Subchorionic hemorrhage

300

what is the name of the condition where the placenta cord insert is on the lateral aspect of the placenta

battledore or marginal cord insert

400

macrosomia and dilated lateral ventricles - most likely congenital diagnosis

aquaductal stenosis 

500

Pt presents with current pregnancy.  History of 2 previous c sections, an ectopic, a blighted ovum, and 1 stillborn.  What is her G's and P's?

retained products of conception

History

100

Pt presents with current pregnancy.  History of 2 previous c sections, an ectopic, a blighted ovum, and 1 stillborn.  What is her G's and P's?

G6 P2 A2 E1

200

Patient presents with current pregnancy and history of 3 fetal demises, 1 elective AB and 1 ectopic.

5

300

Pt presents without current pregnancy.  History of 2 spontaneous miscarriages, 1 ectopic, triplets, and demised twins.  

G5 P3 A4 E1

400

Patient presents with current pregnancy and history of 3 fetal demises, 1 elective AB and 1 ectopic.

G6 P0 A4 E1

500

pt presents with current pregnancy.  Pt selectively reduced 1/3 of the eggs from her IVF since all the eggs resulted in maternal twins.  If she delivered 4 children.  How many eggs were implanted?

3 eggs

twinned to 6 babies

reduced by 1/3 is 6-2= 4 babies babies