OB/GYN ARDMS Registry Review
questions and answers 2026\2027 A+
Grade
Rhombencephalon
- correct answer The primitive hindbrain can be seen as a cystic structure with in the embryonic head?
Decidua Basalis
- correct answer The maternal side of the developing placenta is referred to as the?
1 mm/day
- correct answer Up to 10 weeks gestational age, the mean diameter of the normal gestational sac
should grow?
12 weeks
CRL measures > 45mm
- correct answer Physicologic hernation of fetal intestines outside the abdomen should not be seen after
what gestational age?
7 mm
- correct answer The base of the umbilical cord should not exceed?
3600 units/liter
2000 units/liter
- correct answer One should be able to transabdominally image a gestational sac when the IRC level for
hCG is = or >?
Transvaginally?
,Hydatiform Mole
- correct answer Patient is 10 weeks by menstrual dates with pregnancy induced hypertension. You
suspect?
Preeclamsia
- correct answer Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Dilated cervix
- correct answer Pregnant patient presents with bledding and cramping. What would be suspect of an
inevitable abortion?
Heteroectopic pregnancy
- correct answer An ectopic with a normal IUP?
Yolk Sac
- correct answer To differentiate an early IUP from a pseudogestational sac, it is helpful to visualize?
6mm
Irregulary shaped
Calcified
- correct answer A yolk sac is considered abnormal when it's diameter exceed? Shape? Appearance?
Methotrexate
- correct answer What drug can be used to treat an early unruptured ectopic pregnancy in order to
preserve fertility?
Anteflexed
- correct answer The most common position of a uterus is?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries
- correct answer In a ruptured extopic pregnancy, which section of the tube is most life threatening?
Why?
,The amnion and yolk sac
- correct answer The double bleb sign refers to?
8 weeks
10 weeks
- correct answer At how many weeks, the normal gestational sac should occupy 1/2 of the uterine cavity
and show a yolk sac, embryo and heart beat?
At how many weeks will it fill the uterine cavity with a well defined fetus?
Trophoblastic Disease
- correct answer 1. A group of rare tumors that involve abnormal growth of cells inside the uterus. They
start in cells that would normaly develope into the placenta.
Complete Hydatiform Mole
- correct answer Most common form of Trophoblastic Disease?
Complete
- correct answer A Hydatidiform Mole from trophoblastic neoplasia without the presents of an embryo?
Partial
- correct answer A Hydatidiform Mole from trophoblastic neoplasia with an abnormal embryo or fetus.
Theca Lutein Cysts
- correct answer Functional ovarian cysts are called?
Trophoblastic Disease
- correct answer Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
, Large for gestational age
All characteristics of?
CRL
- correct answer Most reliable calculation for the EDC is?
11 weeks
- correct answer Because of spinal segmentation, CRL begins to loose accuracy after how many weeks?
Vitelline Duct (omphalomesenteric duct)
- correct answer The structure that initially maintains a connction between the yolk sac and embryo
once they diverge from each other?
Contains and artery and a vein.
Nuchal translucency
- correct answer Thickening of the nuchal soft tissue during the 1st trimester and a strong corrolation for
chromosomal defects?
Shirodkar Procedure
- correct answer A procedure preformed to treat and incompentent cervix. The most complicated, the
suture is almost completely buried beneath the cervical mucosa?
McDonald Procedure
- correct answer A procedure preformed to treat and incompentent cervix with a less invasive outcome
using a purse string suture.
Ectopic
- correct answer With this type of pregnancy, the most common symptom is pain?
Interstital
- correct answer An ectopic pregnancy in this part of the tube is more life threatening?
questions and answers 2026\2027 A+
Grade
Rhombencephalon
- correct answer The primitive hindbrain can be seen as a cystic structure with in the embryonic head?
Decidua Basalis
- correct answer The maternal side of the developing placenta is referred to as the?
1 mm/day
- correct answer Up to 10 weeks gestational age, the mean diameter of the normal gestational sac
should grow?
12 weeks
CRL measures > 45mm
- correct answer Physicologic hernation of fetal intestines outside the abdomen should not be seen after
what gestational age?
7 mm
- correct answer The base of the umbilical cord should not exceed?
3600 units/liter
2000 units/liter
- correct answer One should be able to transabdominally image a gestational sac when the IRC level for
hCG is = or >?
Transvaginally?
,Hydatiform Mole
- correct answer Patient is 10 weeks by menstrual dates with pregnancy induced hypertension. You
suspect?
Preeclamsia
- correct answer Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Dilated cervix
- correct answer Pregnant patient presents with bledding and cramping. What would be suspect of an
inevitable abortion?
Heteroectopic pregnancy
- correct answer An ectopic with a normal IUP?
Yolk Sac
- correct answer To differentiate an early IUP from a pseudogestational sac, it is helpful to visualize?
6mm
Irregulary shaped
Calcified
- correct answer A yolk sac is considered abnormal when it's diameter exceed? Shape? Appearance?
Methotrexate
- correct answer What drug can be used to treat an early unruptured ectopic pregnancy in order to
preserve fertility?
Anteflexed
- correct answer The most common position of a uterus is?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries
- correct answer In a ruptured extopic pregnancy, which section of the tube is most life threatening?
Why?
,The amnion and yolk sac
- correct answer The double bleb sign refers to?
8 weeks
10 weeks
- correct answer At how many weeks, the normal gestational sac should occupy 1/2 of the uterine cavity
and show a yolk sac, embryo and heart beat?
At how many weeks will it fill the uterine cavity with a well defined fetus?
Trophoblastic Disease
- correct answer 1. A group of rare tumors that involve abnormal growth of cells inside the uterus. They
start in cells that would normaly develope into the placenta.
Complete Hydatiform Mole
- correct answer Most common form of Trophoblastic Disease?
Complete
- correct answer A Hydatidiform Mole from trophoblastic neoplasia without the presents of an embryo?
Partial
- correct answer A Hydatidiform Mole from trophoblastic neoplasia with an abnormal embryo or fetus.
Theca Lutein Cysts
- correct answer Functional ovarian cysts are called?
Trophoblastic Disease
- correct answer Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
, Large for gestational age
All characteristics of?
CRL
- correct answer Most reliable calculation for the EDC is?
11 weeks
- correct answer Because of spinal segmentation, CRL begins to loose accuracy after how many weeks?
Vitelline Duct (omphalomesenteric duct)
- correct answer The structure that initially maintains a connction between the yolk sac and embryo
once they diverge from each other?
Contains and artery and a vein.
Nuchal translucency
- correct answer Thickening of the nuchal soft tissue during the 1st trimester and a strong corrolation for
chromosomal defects?
Shirodkar Procedure
- correct answer A procedure preformed to treat and incompentent cervix. The most complicated, the
suture is almost completely buried beneath the cervical mucosa?
McDonald Procedure
- correct answer A procedure preformed to treat and incompentent cervix with a less invasive outcome
using a purse string suture.
Ectopic
- correct answer With this type of pregnancy, the most common symptom is pain?
Interstital
- correct answer An ectopic pregnancy in this part of the tube is more life threatening?
