ARDMS OB-GYN REVIEWED EXAM
WITH NGN 2025 QUESTIONS WITH
ANSWERS NEW GENERATION
The primitive hindbrain can be seen as a cystic structure with in the
embryonic head?
Rhombencephalon
The maternal side of the developing placenta is referred to as the?
Decidua Basalis
Up to 10 weeks gestational age, the mean diameter of the normal
gestational sac should grow?
1 mm/day
Physicologic hernation of fetal intestines outside the abdomen should
not be seen after what gestational age?
12 weeks
CRL measures > 45mm
The base of the umbilical cord should not exceed?
7 mm
One should be able to transabdominally image a gestational sac when
the IRC level for hCG is = or >?
Transvaginally?
3600 units/liter
2000 units/liter
Patient is 10 weeks by menstrual dates with pregnancy induced
hypertension. You suspect?
Hydatiform Mole
Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Preeclamsia
Pregnant patient presents with bledding and cramping. What would be
suspect of an inevitable abortion?
Dilated cervix
An ectopic with a normal IUP?
Heteroectopic pregnancy
To differentiate an early IUP from a pseudogestational sac, it is helpful
to visualize?
1|Page
,Yolk Sac
A yolk sac is considered abnormal when it's diameter exceed? Shape?
Appearance?
6mm
Irregulary shaped
Calcified
What drug can be used to treat an early unruptured ectopic pregnancy in
order to preserve fertility?
Methotrexate
The most common position of a uterus is?
Anteflexed
In a ruptured extopic pregnancy, which section of the tube is most life
threatening?
Why?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries
The double bleb sign refers to?
The amnion and yolk sac
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?
8 weeks
10 weeks
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.
Trophoblastic Disease
Most common form of Trophoblastic Disease?
Complete Hydatiform Mole
A Hydatidiform Mole from trophoblastic neoplasia without the presents
of an embryo?
Complete
A Hydatidiform Mole from trophoblastic neoplasia with an abnormal
embryo or fetus.
Partial
Functional ovarian cysts are called?
2|Page
,Theca Lutein Cysts
Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
Trophoblastic Disease
Most reliable calculation for the EDC is?
CRL
Because of spinal segmentation, CRL begins to loose accuracy after how
many weeks?
11 weeks
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.
Vitelline Duct (omphalomesenteric duct)
Thickening of the nuchal soft tissue during the 1st trimester and a strong
corrolation for chromosomal defects?
Nuchal translucency
A procedure preformed to treat and incompentent cervix. The most
complicated, the suture is almost completely buried beneath the cervical
mucosa?
Shirodkar Procedure
A procedure preformed to treat and incompentent cervix with a less
invasive outcome using a purse string suture.
McDonald Procedure
With this type of pregnancy, the most common symptom is pain?
Ectopic
An ectopic pregnancy in this part of the tube is more life threatening?
Interstital
Normally, nuchal translucency doesn't exceed?
3mm
This lies within the atria of the lateral ventricals bilaterally?
Chorid Plexus
3|Page
, In ruling out hydrocephalus, where would one 1st begin to see
enlargement?
Lateral Ventricular Atria
The normal measurements for the lateral ventricla of the fetal brain are?
1cm in largest dimension transversely
When the fetal spine is imaged transversly, the ultrasound
demonstrates?
3 ossidication centers (2 posterior pointing toward each other, 1 anterior)
What US modality would you us to prove fetal life on a frozen image?
M-mode
The anatomic structure closest to the spine in a 4-chamber heart view is?
Left Atrium
This occupies 1/3 of the chest cavity pointing toward the left side of the
fetus?
Fetal Heart
The great vessels of the heart consist of?
RVOT - Pulmonary Artery
LVOT - Ascending Aorta
Communication between right and left Atria is termed?
Foramen Ovale
In a normal fetus, the heart is positioned at what angle?
45 degree angle to the left of midline
A small rounded echoginic structure withing the left ventrical of the
heart is?
Chordae Tendineae / papillary muscle
Which view best demonstrated the diaphram?
Transverse @ the level of 4-chamber heart
Coronal
The thoracic circumference is measured in the?
Transverse view @ level of 4-chamber heart
The candy-cane pulsating vessel imaged somewhat to the left of the
spine in longitudinal is?
Aortic Arch
The fluid filled stomach should always be seen in the upper LT
quadrant. If not seen, you should suspect?
Esophageal Artesia
The esophagus does not properly develop or is missing?
4|Page
WITH NGN 2025 QUESTIONS WITH
ANSWERS NEW GENERATION
The primitive hindbrain can be seen as a cystic structure with in the
embryonic head?
Rhombencephalon
The maternal side of the developing placenta is referred to as the?
Decidua Basalis
Up to 10 weeks gestational age, the mean diameter of the normal
gestational sac should grow?
1 mm/day
Physicologic hernation of fetal intestines outside the abdomen should
not be seen after what gestational age?
12 weeks
CRL measures > 45mm
The base of the umbilical cord should not exceed?
7 mm
One should be able to transabdominally image a gestational sac when
the IRC level for hCG is = or >?
Transvaginally?
3600 units/liter
2000 units/liter
Patient is 10 weeks by menstrual dates with pregnancy induced
hypertension. You suspect?
Hydatiform Mole
Almost always pathonomonic of a molar pregnancy in the 1st trimester?
Preeclamsia
Pregnant patient presents with bledding and cramping. What would be
suspect of an inevitable abortion?
Dilated cervix
An ectopic with a normal IUP?
Heteroectopic pregnancy
To differentiate an early IUP from a pseudogestational sac, it is helpful
to visualize?
1|Page
,Yolk Sac
A yolk sac is considered abnormal when it's diameter exceed? Shape?
Appearance?
6mm
Irregulary shaped
Calcified
What drug can be used to treat an early unruptured ectopic pregnancy in
order to preserve fertility?
Methotrexate
The most common position of a uterus is?
Anteflexed
In a ruptured extopic pregnancy, which section of the tube is most life
threatening?
Why?
Interstitual
Rupture is accompanied by bleeding from the uterin arteries
The double bleb sign refers to?
The amnion and yolk sac
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?
8 weeks
10 weeks
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.
Trophoblastic Disease
Most common form of Trophoblastic Disease?
Complete Hydatiform Mole
A Hydatidiform Mole from trophoblastic neoplasia without the presents
of an embryo?
Complete
A Hydatidiform Mole from trophoblastic neoplasia with an abnormal
embryo or fetus.
Partial
Functional ovarian cysts are called?
2|Page
,Theca Lutein Cysts
Associated with:
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
Trophoblastic Disease
Most reliable calculation for the EDC is?
CRL
Because of spinal segmentation, CRL begins to loose accuracy after how
many weeks?
11 weeks
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.
Vitelline Duct (omphalomesenteric duct)
Thickening of the nuchal soft tissue during the 1st trimester and a strong
corrolation for chromosomal defects?
Nuchal translucency
A procedure preformed to treat and incompentent cervix. The most
complicated, the suture is almost completely buried beneath the cervical
mucosa?
Shirodkar Procedure
A procedure preformed to treat and incompentent cervix with a less
invasive outcome using a purse string suture.
McDonald Procedure
With this type of pregnancy, the most common symptom is pain?
Ectopic
An ectopic pregnancy in this part of the tube is more life threatening?
Interstital
Normally, nuchal translucency doesn't exceed?
3mm
This lies within the atria of the lateral ventricals bilaterally?
Chorid Plexus
3|Page
, In ruling out hydrocephalus, where would one 1st begin to see
enlargement?
Lateral Ventricular Atria
The normal measurements for the lateral ventricla of the fetal brain are?
1cm in largest dimension transversely
When the fetal spine is imaged transversly, the ultrasound
demonstrates?
3 ossidication centers (2 posterior pointing toward each other, 1 anterior)
What US modality would you us to prove fetal life on a frozen image?
M-mode
The anatomic structure closest to the spine in a 4-chamber heart view is?
Left Atrium
This occupies 1/3 of the chest cavity pointing toward the left side of the
fetus?
Fetal Heart
The great vessels of the heart consist of?
RVOT - Pulmonary Artery
LVOT - Ascending Aorta
Communication between right and left Atria is termed?
Foramen Ovale
In a normal fetus, the heart is positioned at what angle?
45 degree angle to the left of midline
A small rounded echoginic structure withing the left ventrical of the
heart is?
Chordae Tendineae / papillary muscle
Which view best demonstrated the diaphram?
Transverse @ the level of 4-chamber heart
Coronal
The thoracic circumference is measured in the?
Transverse view @ level of 4-chamber heart
The candy-cane pulsating vessel imaged somewhat to the left of the
spine in longitudinal is?
Aortic Arch
The fluid filled stomach should always be seen in the upper LT
quadrant. If not seen, you should suspect?
Esophageal Artesia
The esophagus does not properly develop or is missing?
4|Page
