PAEA OBGYN EOR Topics questions and
answers 2025\2026 A+ Grade
1. G2 P1001
2. G4 P1111
3. G3 P2103
- correct answer 1. currently pregnant, 1 term delivery, 1 living child
2. currently pregnant, 1 term delivery, 1 preterm delivery, 1 abortion/miscarriage, 1 living child (cannot
tell if it is term or preterm child by formula)
3. currently pregnant, twins at term, 1 at preterm, 3 living children
G (# pregnancies)
T (# term deliveries at 37 weeks or more including stillbirths)
P (# preterm deliveries at 20-37 weeks)
A (abortions <20 weeks including miscarriages)
L (# living children)
a previable fetus is defined as
- correct answer <24 weeks old (varies w/ guidelines)
what are the routine test during the first prenatal visit?
- correct answer blood pressure, blood type & Rh, CBC, UA (glucose & protein), random glucose, HBsAg,
Hep C, HIV, syphilis, rubella titer, VZV titer, pap, sickle cell & CF screening
diagnosis of pregnancy can be detected by serum B-hCG at ____ days after conception and by urine B-
hCG at ____ days after conception
- correct answer serum B-hCG: 5 days after conception
,urine B-hCG: 14 days after conception
how is estimated date of delivery (EDD) determined?
- correct answer Naegele's Rule: from 1st day of LMP
1. subtract 3 mos, add 7 days, add 1 year
2. add 9 mos & 7 days
ex: LMP started 8/7/16 = EDD: 5/14/17
when estimating gestational age on US what measurements can you use?
- correct answer 1. crown rump length (CRL)
2. biparietal diameter
3. head circumference
4. abdominal circumference
5. femur length
what physical exam and lab tests should be performed on initial visit of a pregnant patient?
- correct answer full physical exam, BP, pelvic exam w/ pap smear (unless done in last 6 mos), G/C Cx's,
bimanual exam to check size of uterus and help estimate # weeks into pregnancy, US if unsure of LMP to
date # weeks
labs: CBC (r/o anemia), blood type & Ab screen + Rh status, RPR, HBSAg, rubella Ab screen, VZV Ab
screen if no h/o chickenpox, UA w/ Cx, blood glucose, HIV, sickle cell/CF screen, PPD in high risk pts,
screening for aneuploidy offered (inc or dec free B-hCG, PAPP-A low w/ down syndrome, inc nuchal
translucency @10-13 weeks US)
what are the screening tests for aneuploidy (including down syndrome)? when are they performed?
- correct answer ALL offered around 10-13 weeks
1. free B-hCG (high or low can be indicative of abnormalities)
2. PAPP-A (usually low w/ DS)
3. nuchal translucency (inc thickness on US)
4. if any above + can be offered chorionic villus sampling (or if they have any RF for aneuploidy such as
advanced maternal age/AMA, previous child w/ chromosomal abnmlity, abnml US, prior pregnancy
losses) but inc r/o spontaneous abortion w/ procedure
,*amniocentesis offered around 15-18 weeks w/ same indications as CVS (both can diagnose
chromosomal abnormalities and have risk of spontaneous abortion)
the uterus softening at 6 weeks is what sign?
- correct answer Ladin's sign
the uterine isthmus softening after 6-8 weeks gestation is what sign?
- correct answer Hegar's sign
bluish coloration of the cervix & vulva around 8-12 weeks is what sign?
- correct answer Chadwick's sign
a palpable lateral bulge or softening of the uterine cornus (where uterus meets fallopian tubes) at 7-8
weeks gestation is what sign?
- correct answer Piskacek's sign
cervical softening of the cervix and vulva around 8-12 wks
- correct answer Goodell's sign
what are the # weeks in each trimester?
- correct answer 1st tri: 1-12
2nd tri: 13-27
3rd tri: 28-birth
what should be checked at routine first trimester visits?
- correct answer BP, weight, urine dipstick, measurement of uterus/fundal height, auscultation of fetal
heart sounds at 10-12 weeks (nml 120-160)
what week should the uterus/fundal height measure above the pubic symphysis? midway between
pubic symphysis/umbilicus? at umbilicus? 2-3cm below xiphoid process?
- correct answer -above the pubic symphysis? 12 wks
-midway between pubic symphysis/umbilicus? 14-16 wks
, -at umbilicus? 20 wks
-2-3cm below xiphoid process? 38 wks
after 20 weeks gestation, the fundal height should measure +/- ____cm from the # of weeks
- correct answer +/- 2 cm
when are fetal heart tones audible with doppler US? what rate is nml?
- correct answer 10-12 weeks (end of 1st trimester) at 120-160 bpm
what is the quad screen test for? what are the tests? when is it performed?
- correct answer -to screen for trisomy 21 (down syndrome), trisomy 18, and NTD like spina bifida
-tests: alpha-feto protein, B-hCG, estradiol, and inhibin-A
-performed at 15-20 weeks
-can be performed w/ 1st trimester screening - called "integrated screening"
what would you expect with the quad screen if a baby had down syndrome?
- correct answer a-FP: low
B-hCG: high
estradiol: low
inhibin-A: high (always high in chromosomal abnormalities)
when can a fetus be detected by pelvic US?
- correct answer 5-6 weeks
what would you expect with the quad screen if a baby had a neural tube defect?
- correct answer a-FP: *high*
B-hCG: N/A
estradiol: N/A
inhibin-A: high (always high in chromosomal abnormalities)
answers 2025\2026 A+ Grade
1. G2 P1001
2. G4 P1111
3. G3 P2103
- correct answer 1. currently pregnant, 1 term delivery, 1 living child
2. currently pregnant, 1 term delivery, 1 preterm delivery, 1 abortion/miscarriage, 1 living child (cannot
tell if it is term or preterm child by formula)
3. currently pregnant, twins at term, 1 at preterm, 3 living children
G (# pregnancies)
T (# term deliveries at 37 weeks or more including stillbirths)
P (# preterm deliveries at 20-37 weeks)
A (abortions <20 weeks including miscarriages)
L (# living children)
a previable fetus is defined as
- correct answer <24 weeks old (varies w/ guidelines)
what are the routine test during the first prenatal visit?
- correct answer blood pressure, blood type & Rh, CBC, UA (glucose & protein), random glucose, HBsAg,
Hep C, HIV, syphilis, rubella titer, VZV titer, pap, sickle cell & CF screening
diagnosis of pregnancy can be detected by serum B-hCG at ____ days after conception and by urine B-
hCG at ____ days after conception
- correct answer serum B-hCG: 5 days after conception
,urine B-hCG: 14 days after conception
how is estimated date of delivery (EDD) determined?
- correct answer Naegele's Rule: from 1st day of LMP
1. subtract 3 mos, add 7 days, add 1 year
2. add 9 mos & 7 days
ex: LMP started 8/7/16 = EDD: 5/14/17
when estimating gestational age on US what measurements can you use?
- correct answer 1. crown rump length (CRL)
2. biparietal diameter
3. head circumference
4. abdominal circumference
5. femur length
what physical exam and lab tests should be performed on initial visit of a pregnant patient?
- correct answer full physical exam, BP, pelvic exam w/ pap smear (unless done in last 6 mos), G/C Cx's,
bimanual exam to check size of uterus and help estimate # weeks into pregnancy, US if unsure of LMP to
date # weeks
labs: CBC (r/o anemia), blood type & Ab screen + Rh status, RPR, HBSAg, rubella Ab screen, VZV Ab
screen if no h/o chickenpox, UA w/ Cx, blood glucose, HIV, sickle cell/CF screen, PPD in high risk pts,
screening for aneuploidy offered (inc or dec free B-hCG, PAPP-A low w/ down syndrome, inc nuchal
translucency @10-13 weeks US)
what are the screening tests for aneuploidy (including down syndrome)? when are they performed?
- correct answer ALL offered around 10-13 weeks
1. free B-hCG (high or low can be indicative of abnormalities)
2. PAPP-A (usually low w/ DS)
3. nuchal translucency (inc thickness on US)
4. if any above + can be offered chorionic villus sampling (or if they have any RF for aneuploidy such as
advanced maternal age/AMA, previous child w/ chromosomal abnmlity, abnml US, prior pregnancy
losses) but inc r/o spontaneous abortion w/ procedure
,*amniocentesis offered around 15-18 weeks w/ same indications as CVS (both can diagnose
chromosomal abnormalities and have risk of spontaneous abortion)
the uterus softening at 6 weeks is what sign?
- correct answer Ladin's sign
the uterine isthmus softening after 6-8 weeks gestation is what sign?
- correct answer Hegar's sign
bluish coloration of the cervix & vulva around 8-12 weeks is what sign?
- correct answer Chadwick's sign
a palpable lateral bulge or softening of the uterine cornus (where uterus meets fallopian tubes) at 7-8
weeks gestation is what sign?
- correct answer Piskacek's sign
cervical softening of the cervix and vulva around 8-12 wks
- correct answer Goodell's sign
what are the # weeks in each trimester?
- correct answer 1st tri: 1-12
2nd tri: 13-27
3rd tri: 28-birth
what should be checked at routine first trimester visits?
- correct answer BP, weight, urine dipstick, measurement of uterus/fundal height, auscultation of fetal
heart sounds at 10-12 weeks (nml 120-160)
what week should the uterus/fundal height measure above the pubic symphysis? midway between
pubic symphysis/umbilicus? at umbilicus? 2-3cm below xiphoid process?
- correct answer -above the pubic symphysis? 12 wks
-midway between pubic symphysis/umbilicus? 14-16 wks
, -at umbilicus? 20 wks
-2-3cm below xiphoid process? 38 wks
after 20 weeks gestation, the fundal height should measure +/- ____cm from the # of weeks
- correct answer +/- 2 cm
when are fetal heart tones audible with doppler US? what rate is nml?
- correct answer 10-12 weeks (end of 1st trimester) at 120-160 bpm
what is the quad screen test for? what are the tests? when is it performed?
- correct answer -to screen for trisomy 21 (down syndrome), trisomy 18, and NTD like spina bifida
-tests: alpha-feto protein, B-hCG, estradiol, and inhibin-A
-performed at 15-20 weeks
-can be performed w/ 1st trimester screening - called "integrated screening"
what would you expect with the quad screen if a baby had down syndrome?
- correct answer a-FP: low
B-hCG: high
estradiol: low
inhibin-A: high (always high in chromosomal abnormalities)
when can a fetus be detected by pelvic US?
- correct answer 5-6 weeks
what would you expect with the quad screen if a baby had a neural tube defect?
- correct answer a-FP: *high*
B-hCG: N/A
estradiol: N/A
inhibin-A: high (always high in chromosomal abnormalities)
