Week 1: Intro

Question 1

What is gestational age

Answer 1

-calculated from first day of LMP
-includes the two weeks before ovulation/conception
-generally when talking about pregnancy, always talking about gestational age unless talking about teratogen exposure

Question 2

What is embryonic age

Answer 2

-begins at date of conception
-ex: at 12 weeks gestation, fetus is 10 weeks by embryonic age/development

Question 3

What weeks make up each trimester and what is considered a full term/normal pregnancy?

Answer 3

-1st trimester: 0-13w6d
-2nd trimester: 14w0d-27w6d
-3rd trimester: 28w0d-end of pregnancy

-Full term delivery: 37w0d-42w0d

Question 4

What happens at first trimester OB visit?

Answer 4

-typically between 6-12 wks
-complete hx: OB, medical, surgical, family, social
-reviews meds for teratogen exposure, prenatal vit
-physical exam
-draw prenatal labs
-US with pregnancy dating
-outline genetic testing: aneuploidy screening/diagnostic testing, carrier screening

Question 5

OB labs: what labs conducted and CBC value we care about?

Answer 5

-quantitative hCG in blood
-CBC
-ABO RH type
-RPR screen (syphilis)

-MCV value!!!!

Question 6

What is looked for in the ultrasound in each of the trimesters?

Answer 6

-1st: viability, pregnancy location, number of fetuses, dating
-2nd: anatomy
-3rd: growth, fetal well-being/BPP, fetal position

Question 7

3rd trimester tests/to-do list

Answer 7

-gestational diabetes screen: between 24-28 wks, determines how well body is able to metabolize extra sugar
-group beta streptococcus (GBS): 36 wks, rectovaginal swab, treatment with antibiotics in labor if positive
-CBC
-Rhogam if indiciated
-STI testing before delivery

Question 8

What vaccines are recommended in every pregnancy?

Answer 8

Tdap
COVID-19
Influenza

Question 9

Gs vs Ps?

Answer 9

-Gravidity: total number of confirmed pregnancy regardless of outcome
-Parity: number of times has given birth to a pregnancy that is at least 20 wks gestation

Question 10

What does each value stand for?
G_P_ _ _ _

Answer 10

G [total # of pregnancies]

P[full term (>=37wks)]
[# preterm (>=20 wks and <37 wks)]
[# pregnancies lost (<20 wks)]
[# currently living children]

Reminders:
-twins/triplets count as one pregnancy but multiple living children
-Adoptions, foster children not included
-current pregnancy counts as G but not P

Question 11

How big does difference in EDD between LMP and US have to be to change EDD?
<= 8 6/7wk
9 0/7 wk - 13 6/7 wk
14 0/7 wk - 15 6/7 wk
16 0/7 wk - 21 6/7 wk
22 0/7 wk - 27 6/7 wk
28 0/7 wk - beyond

Answer 11

<= 8 6/7wk: more than 5d
9 0/7 wk - 13 6/7 wk: more than 7d
14 0/7 wk - 15 6/7 wk: more than 7d
16 0/7 wk - 21 6/7 wk: more than 10d
22 0/7 wk - 27 6/7 wk: more than 14d
28 0/7 wk - beyond: more than 21d