PAEA OBGYN EOR Topics Questions with Complete Solutions | Verified | Guaranteed A+| 2026

PAEA OBGYN EOR Topics Questions with Complete Solutions | Verified | Guaranteed A+| 2026 1. G2 P1001 2. G4 P1111 3. G3 P2103 - 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 - answer-24 weeks old (varies w/ guidelines) what are the routine test during the first prenatal visit? - 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 - answer-serum B-hCG: 5 days after conception urine B-hCG: 14 days after conceptionhow is estimated date of delivery (EDD) determined? - 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? - 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? - 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? - 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? - answer-Ladin's sign the uterine isthmus softening after 6-8 weeks gestation is what sign? - answer-Hegar's sign bluish coloration of the cervix & vulva around 8-12 weeks is what sign? - 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? - answer-Piskacek's sign cervical softening of the cervix and vulva around 8-12 wks - answer-Goodell's sign what are the # weeks in each trimester? - answer-1st tri: 1-12 2nd tri: 13-27 3rd tri: 28-birth what should be checked at routine first trimester visits? - 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? - 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 - answer-+/- 2 cm when are fetal heart tones audible with doppler US? what rate is nml? - 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? - 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? - 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? - answer-5-6 weeks what would you expect with the quad screen if a baby had a neural tube defect? - answer-a-FP: *high*B-hCG: N/A estradiol: N/A inhibin-A: high (always high in chromosomal abnormalities) what would you expect with the quad screen if a baby had trisomy 18? - answer-a-FP: low B-hCG: low estradiol: low inhibin-A: high (always high in chromosomal abnormalities) the anatomy ultrasound (checking for amniotic fluid level, fetal viability, growth, and anatomy) is performed at how many weeks? - answer-18-22 weeks when is gestational diabetes screened for? what is the screening test & BS limit? what is the diagnostic test and & BS limits? - answer--24-28 weeks -glucose loading test (GLT): 50g given and serum glucose checked 1 hr later- failed if BS ≥140 -glucose tolerance test (GTT): fasting BS checked (≥95) then 100g glucose given and BS checked at 1 hr (≥180), 2 hr (≥155), 3 hr (≥140); failure = at least 2/4 when is "quickening" aka fetal movement felt? - answer-16-20 weeks how often are OB visits scheduled? - answer-Q4 weeks first 2 trimesters, 1-28 wks Q2 weeks 28-36 wks Qwk 36-birth what tests/physical examinations should be performed at third trimester visits? - answer-- repeat Ab titers in unsensitized Rh(-) mothers followed by RhoGAM @ 28 weeks & w/I 72 hrs of childbirth-group B streptococcus screening @ 32-37 weeks via vaginal-rectal Cx -H/H @ 35 weeks -biophysical profile/BPP if there are complications: (5 variables: fetal breathing, fetal tones, amniotic fluid levels, NST (nonstress test), & gross fetal movements - 2 pts each) -non-stress testing: baseline fetal HR 120-160 -Leopold maneuvers to determine fetal presentation, or US if cannot determine (can do external cephalic version if breech presentation) -after 37 weeks sweeping membranes offered at weekly visits to help induce labor In high risk individuals what tests are run again in the third trimester? prophylactic tx? - answer- -G/C Cx -if + HSV, prophylactic acyclovir initiated at 36 weeks -if + GB strep, IV PCN given when presenting in labor what are the hematologic effects of pregnancy? - answer--dilutional anemia (plasma vol inc by 50% but RBCs only inc by 20-30%) -WBC increases (especially during stress of labor- ppl confuse this with sepsis) -platelets dec -hypercoagulable state (inc thromboembolic events d/t Virchows triad- venous stasis, endothelial damage, hypercoagulability & inc in factors VII-X and fibrinogen) -iron deficiency anemia (d/t inc demand on hematopoiesis) nonstress testing is reactive when? - answer--2 or more accelerations in 20 minutes -fetal HR inc 15 or more bpm from baseline lasting 15 or more seconds what are the effects of pregnancy on the heart and BP? - answer--CO increases by 30-50% (first in SV then in HR and a dec in SVR) -BP decreases slightly (so if there is an inc be suspicious of preE/eclampsia)dyspnea of pregnancy occurs in 60-70% of pts and is d/t - answer-dec PaCO2 levels, inc tidal volume, decrease TLC what GI changes occur in pregnancy? - answer-N/V (70%), delayed gastric empyting & dec gastroesophageal sphincter tone (= GERD), dec motility of lg bowel (= constipation) what kidney changes occur in pregnancy? - answer--50% inc in GFR -the kidneys inc in size and the ureters dilate (cause of inc r/o pyelonephritis)