OB/GYN ARDMS REGISTRY REVIEW
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026 UPDATE.
Rhombencephalon - ANS The primitive hindbrain can be seen as a cystic structure with in the
embryonic head?
Decidua Basalis - ANS The maternal side of the developing placenta is referred to as the?
1 mm/day - ANS Up to 10 weeks gestational age, the mean diameter of the normal
gestational sac should grow?
12 weeks
CRL measures > 45mm - ANS Physicologic hernation of fetal intestines outside the abdomen
should not be seen after what gestational age?
7 mm - ANS The base of the umbilical cord should not exceed?
3600 units/liter
2000 units/liter - ANS One should be able to transabdominally image a gestational sac when
the IRC level for hCG is = or >?
Transvaginally?
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Hydatiform Mole - ANS Patient is 10 weeks by menstrual dates with pregnancy induced
hypertension. You suspect?
Preeclamsia - ANS Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Dilated cervix - ANS Pregnant patient presents with bledding and cramping. What would be
suspect of an inevitable abortion?
Heteroectopic pregnancy - ANS An ectopic with a normal IUP?
Yolk Sac - ANS To differentiate an early IUP from a pseudogestational sac, it is helpful to
visualize?
6mm
Irregulary shaped
Calcified - ANS A yolk sac is considered abnormal when it's diameter exceed? Shape?
Appearance?
Methotrexate - ANS What drug can be used to treat an early unruptured ectopic pregnancy
in order to preserve fertility?
Anteflexed - ANS The most common position of a uterus is?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries - ANS In a ruptured extopic
pregnancy, which section of the tube is most life threatening?
Why?
The amnion and yolk sac - ANS The double bleb sign refers to?
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,8 weeks
10 weeks - ANS 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 - ANS 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 - ANS Most common form of Trophoblastic Disease?
Complete - ANS A Hydatidiform Mole from trophoblastic neoplasia without the presents of
an embryo?
Partial - ANS A Hydatidiform Mole from trophoblastic neoplasia with an abnormal embryo or
fetus.
Theca Lutein Cysts - ANS Functional ovarian cysts are called?
Trophoblastic Disease - ANS Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
CRL - ANS Most reliable calculation for the EDC is?
11 weeks - ANS Because of spinal segmentation, CRL begins to loose accuracy after how
many weeks?
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vitelline Duct (omphalomesenteric duct) - ANS 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 - ANS Thickening of the nuchal soft tissue during the 1st trimester and a
strong corrolation for chromosomal defects?
Shirodkar Procedure - ANS A procedure preformed to treat and incompentent cervix. The
most complicated, the suture is almost completely buried beneath the cervical mucosa?
McDonald Procedure - ANS A procedure preformed to treat and incompentent cervix with a
less invasive outcome using a purse string suture.
Ectopic - ANS With this type of pregnancy, the most common symptom is pain?
Interstital - ANS An ectopic pregnancy in this part of the tube is more life threatening?
3mm - ANS Normally, nuchal translucency doesn't exceed?
Chorid Plexus - ANS This lies within the atria of the lateral ventricals bilaterally?
Lateral Ventricular Atria - ANS In ruling out hydrocephalus, where would one 1st begin to see
enlargement?
1cm in largest dimension transversely - ANS The normal measurements for the lateral
ventricla of the fetal brain are?
3 ossidication centers (2 posterior pointing toward each other, 1 anterior) - ANS When the
fetal spine is imaged transversly, the ultrasound demonstrates?
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026 UPDATE.
Rhombencephalon - ANS The primitive hindbrain can be seen as a cystic structure with in the
embryonic head?
Decidua Basalis - ANS The maternal side of the developing placenta is referred to as the?
1 mm/day - ANS Up to 10 weeks gestational age, the mean diameter of the normal
gestational sac should grow?
12 weeks
CRL measures > 45mm - ANS Physicologic hernation of fetal intestines outside the abdomen
should not be seen after what gestational age?
7 mm - ANS The base of the umbilical cord should not exceed?
3600 units/liter
2000 units/liter - ANS One should be able to transabdominally image a gestational sac when
the IRC level for hCG is = or >?
Transvaginally?
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Hydatiform Mole - ANS Patient is 10 weeks by menstrual dates with pregnancy induced
hypertension. You suspect?
Preeclamsia - ANS Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Dilated cervix - ANS Pregnant patient presents with bledding and cramping. What would be
suspect of an inevitable abortion?
Heteroectopic pregnancy - ANS An ectopic with a normal IUP?
Yolk Sac - ANS To differentiate an early IUP from a pseudogestational sac, it is helpful to
visualize?
6mm
Irregulary shaped
Calcified - ANS A yolk sac is considered abnormal when it's diameter exceed? Shape?
Appearance?
Methotrexate - ANS What drug can be used to treat an early unruptured ectopic pregnancy
in order to preserve fertility?
Anteflexed - ANS The most common position of a uterus is?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries - ANS In a ruptured extopic
pregnancy, which section of the tube is most life threatening?
Why?
The amnion and yolk sac - ANS The double bleb sign refers to?
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,8 weeks
10 weeks - ANS 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 - ANS 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 - ANS Most common form of Trophoblastic Disease?
Complete - ANS A Hydatidiform Mole from trophoblastic neoplasia without the presents of
an embryo?
Partial - ANS A Hydatidiform Mole from trophoblastic neoplasia with an abnormal embryo or
fetus.
Theca Lutein Cysts - ANS Functional ovarian cysts are called?
Trophoblastic Disease - ANS Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
CRL - ANS Most reliable calculation for the EDC is?
11 weeks - ANS Because of spinal segmentation, CRL begins to loose accuracy after how
many weeks?
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vitelline Duct (omphalomesenteric duct) - ANS 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 - ANS Thickening of the nuchal soft tissue during the 1st trimester and a
strong corrolation for chromosomal defects?
Shirodkar Procedure - ANS A procedure preformed to treat and incompentent cervix. The
most complicated, the suture is almost completely buried beneath the cervical mucosa?
McDonald Procedure - ANS A procedure preformed to treat and incompentent cervix with a
less invasive outcome using a purse string suture.
Ectopic - ANS With this type of pregnancy, the most common symptom is pain?
Interstital - ANS An ectopic pregnancy in this part of the tube is more life threatening?
3mm - ANS Normally, nuchal translucency doesn't exceed?
Chorid Plexus - ANS This lies within the atria of the lateral ventricals bilaterally?
Lateral Ventricular Atria - ANS In ruling out hydrocephalus, where would one 1st begin to see
enlargement?
1cm in largest dimension transversely - ANS The normal measurements for the lateral
ventricla of the fetal brain are?
3 ossidication centers (2 posterior pointing toward each other, 1 anterior) - ANS When the
fetal spine is imaged transversly, the ultrasound demonstrates?
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
