OBGYN COMAT Review Exam Latest 2026 Questions
and Correct Detailed Answers Already Graded A+
When can fetal heart tones be detected w/doppler? - CORRECT ANSWER-10-
12 weeks
When is fetal movement appreciated? - CORRECT ANSWER-17-18 weeks
When should you get a "quantitative" beta-hCG - CORRECT ANSWER--to
diagnose & follow ectopic pregnancy
-monitor trophoblastic dz
-screen for fetal aneuploidy
What's the definition of spontaneous abortion? - CORRECT ANSWER-Loss of
products of conception (POC) before 20th week of pregnancy.
Major birth defect caused by lithium - CORRECT ANSWER-Congenital heart
disease (Ebstein's anomaly)
,Defects associated w/streptomycin & kanamycin - CORRECT ANSWER-
Aminoglycosides--> hearing loss & CN VIII damage
What supplement is given in pregnancy to decrease neural tube defects for all
reproductive-age women? - CORRECT ANSWER-Folic acid supplements
What additional supplements are given for complete vegeterians - CORRECT
ANSWER-vitamin D & vitamin B12
What kind of immunoglobulins can cross the placenta? - CORRECT ANSWER-
IgG
Prenatal screening at the initial visit - CORRECT ANSWER-Heme= CBC, Rh
factor, Type & Screen
ID= UA & culture, rubella Ab titer, HBsAg, RPR/VDRL, cervical G/C, PPD, IV, Pap
smear (to check for dysplasia).
If indicated: HbA1C, Sickle cell screening. Can also discuss genetic screening (Tay-
Sachs dz, Cystic Fibrosis).
,When are prenatal visits conducted? - CORRECT ANSWER-Weeks 0-28= every
4 weeks (7*4=28)
Weeks 29-35= every 2 weeks
Weeks 36-birth= every week
When is a quad screen conducted? - CORRECT ANSWER-15-22 weeks
When's an ultrasound for full anatomic screen done? - CORRECT ANSWER-18-
20 weeks
When is the 1 hr glucose challenge test for gestational DM done? - CORRECT
ANSWER-24-28 weeks
When is RhoGAM given to Rh- women? - CORRECT ANSWER-28-30 weeks
When's GBS culture done?
(and cervical culture for N gonorrhoeae & Chlamydia in selected populations). -
CORRECT ANSWER-35-40 weeks or 32-37 weeks
, when can a nuchal transparency test be ordered? - CORRECT ANSWER-9-14
weeks
4 elements of the Quad Screen - CORRECT ANSWER-maternal serum AFP
B-hCG
Estradiol
Inhibin A
What's associated with ELEVATED maternal serum AFP (MSAFP)?
(<2.5 MoMs) - CORRECT ANSWER-Open neural tube defects (spina bifida,
anencephaly)
Abdominal wall defects (gastroschisis, omphalocele)
Multiple gestation
Incorrect gestational dating
Fetal death
Placental abnormailities (like rupture)
What's associated with REDUCED maternal serufm AFP (MSAFP)
(<0.5 MoM) - CORRECT ANSWER-Trisomy 21 & 18
Fetal demise
and Correct Detailed Answers Already Graded A+
When can fetal heart tones be detected w/doppler? - CORRECT ANSWER-10-
12 weeks
When is fetal movement appreciated? - CORRECT ANSWER-17-18 weeks
When should you get a "quantitative" beta-hCG - CORRECT ANSWER--to
diagnose & follow ectopic pregnancy
-monitor trophoblastic dz
-screen for fetal aneuploidy
What's the definition of spontaneous abortion? - CORRECT ANSWER-Loss of
products of conception (POC) before 20th week of pregnancy.
Major birth defect caused by lithium - CORRECT ANSWER-Congenital heart
disease (Ebstein's anomaly)
,Defects associated w/streptomycin & kanamycin - CORRECT ANSWER-
Aminoglycosides--> hearing loss & CN VIII damage
What supplement is given in pregnancy to decrease neural tube defects for all
reproductive-age women? - CORRECT ANSWER-Folic acid supplements
What additional supplements are given for complete vegeterians - CORRECT
ANSWER-vitamin D & vitamin B12
What kind of immunoglobulins can cross the placenta? - CORRECT ANSWER-
IgG
Prenatal screening at the initial visit - CORRECT ANSWER-Heme= CBC, Rh
factor, Type & Screen
ID= UA & culture, rubella Ab titer, HBsAg, RPR/VDRL, cervical G/C, PPD, IV, Pap
smear (to check for dysplasia).
If indicated: HbA1C, Sickle cell screening. Can also discuss genetic screening (Tay-
Sachs dz, Cystic Fibrosis).
,When are prenatal visits conducted? - CORRECT ANSWER-Weeks 0-28= every
4 weeks (7*4=28)
Weeks 29-35= every 2 weeks
Weeks 36-birth= every week
When is a quad screen conducted? - CORRECT ANSWER-15-22 weeks
When's an ultrasound for full anatomic screen done? - CORRECT ANSWER-18-
20 weeks
When is the 1 hr glucose challenge test for gestational DM done? - CORRECT
ANSWER-24-28 weeks
When is RhoGAM given to Rh- women? - CORRECT ANSWER-28-30 weeks
When's GBS culture done?
(and cervical culture for N gonorrhoeae & Chlamydia in selected populations). -
CORRECT ANSWER-35-40 weeks or 32-37 weeks
, when can a nuchal transparency test be ordered? - CORRECT ANSWER-9-14
weeks
4 elements of the Quad Screen - CORRECT ANSWER-maternal serum AFP
B-hCG
Estradiol
Inhibin A
What's associated with ELEVATED maternal serum AFP (MSAFP)?
(<2.5 MoMs) - CORRECT ANSWER-Open neural tube defects (spina bifida,
anencephaly)
Abdominal wall defects (gastroschisis, omphalocele)
Multiple gestation
Incorrect gestational dating
Fetal death
Placental abnormailities (like rupture)
What's associated with REDUCED maternal serufm AFP (MSAFP)
(<0.5 MoM) - CORRECT ANSWER-Trisomy 21 & 18
Fetal demise
