OB/GYN ARDMS Registry Review (2025 updated) QUESTIONS AND
OB/GYN ARDMS Registry Review
ANSWERS (DETAILED & ELABORATED) fully solved!!
Study online at https://quizlet.com/_1emgja
1. The primitive hindbrain can be seen as a cystic Rhombencephalon
structure with in the embryonic head?
2. The maternal side of the developing placenta is Decidua Basalis
referred to as the?
3. Up to 10 weeks gestational age, the mean di- 1 mm/day
ameter of the normal gestational sac should
grow?
4. Physicologic hernation of fetal intestines out- 12 weeks
side the abdomen should not be seen after CRL measures > 45mm
what gestational age?
5. The base of the umbilical cord should not ex- 7 mm
ceed?
6. One should be able to transabdominally image 3600 units/liter
a gestational sac when the IRC level for hCG is 2000 units/liter
= or >?
Transvaginally?
7. Patient is 10 weeks by menstrual dates with Hydatiform Mole
pregnancy induced hypertension. You suspect?
8. Almost always pathonomonic of a molar preg- Preeclamsia
nancy in the 1st trimester?
9. Pregnant patient presents with bledding and Dilated cervix
cramping. What would be suspect of an in-
evitable abortion?
10. An ectopic with a normal IUP? Heteroectopic pregnancy
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
11. To differentiate an early IUP from a pseudoges- Yolk Sac
tational sac, it is helpful to visualize?
12. A yolk sac is considered abnormal when it's 6mm
diameter exceed? Shape? Appearance? Irregulary shaped
Calcified
13. What drug can be used to treat an early unrup- Methotrexate
tured ectopic pregnancy in order to preserve
fertility?
14. The most common position of a uterus is? Anteflexed
15. In a ruptured extopic pregnancy, which section Interstitual
of the tube is most life threatening? Rupture is accompanied by bleed-
Why? ing from the uterin arteries
16. The double bleb sign refers to? The amnion and yolk sac
17. At how many weeks, the normal gestational 8 weeks
sac should occupy 1/2 of the uterine cavity and 10 weeks
show a yolk sac, embryo and heart beat?
At how many weeks will it fill the uterine cavity
with a well defined fetus?
18. 1. A group of rare tumors that involve abnormal Trophoblastic Disease
growth of cells inside the uterus. They start in
cells that would normaly develope into the pla-
centa.
19. Most common form of Trophoblastic Disease? Complete Hydatiform Mole
20. A Hydatidiform Mole from trophoblastic neo- Complete
plasia without the presents of an embryo?
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
21. A Hydatidiform Mole from trophoblastic neo- Partial
plasia with an abnormal embryo or fetus.
22. Functional ovarian cysts are called? Theca Lutein Cysts
23. Associated with: Trophoblastic Disease
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
24. Most reliable calculation for the EDC is? CRL
25. Because of spinal segmentation, CRL begins to 11 weeks
loose accuracy after how many weeks?
26. The structure that initially maintains a connc- Vitelline Duct (omphalomesenteric
tion between the yolk sac and embryo once duct)
they diverge from each other?
Contains and artery and a vein.
27. Thickening of the nuchal soft tissue during the Nuchal translucency
1st trimester and a strong corrolation for chro-
mosomal defects?
28. A procedure preformed to treat and incompen- Shirodkar Procedure
tent cervix. The most complicated, the suture is
almost completely buried beneath the cervical
mucosa?
29. McDonald Procedure
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
A procedure preformed to treat and incompen-
tent cervix with a less invasive outcome using a
purse string suture.
30. With this type of pregnancy, the most common Ectopic
symptom is pain?
31. An ectopic pregnancy in this part of the tube is Interstital
more life threatening?
32. Normally, nuchal translucency doesn't exceed? 3mm
33. This lies within the atria of the lateral ventricals Chorid Plexus
bilaterally?
34. In ruling out hydrocephalus, where would one Lateral Ventricular Atria
1st begin to see enlargement?
35. The normal measurements for the lateral ven- 1cm in largest dimension trans-
tricla of the fetal brain are? versely
36. When the fetal spine is imaged transversly, the 3 ossidication centers (2 posterior
ultrasound demonstrates? pointing toward each other, 1 ante-
rior)
37. What US modality would you us to prove fetal M-mode
life on a frozen image?
38. The anatomic structure closest to the spine in a Left Atrium
4-chamber heart view is?
39. This occupies 1/3 of the chest cavity pointing Fetal Heart
toward the left side of the fetus?
OB/GYN ARDMS Registry Review
ANSWERS (DETAILED & ELABORATED) fully solved!!
Study online at https://quizlet.com/_1emgja
1. The primitive hindbrain can be seen as a cystic Rhombencephalon
structure with in the embryonic head?
2. The maternal side of the developing placenta is Decidua Basalis
referred to as the?
3. Up to 10 weeks gestational age, the mean di- 1 mm/day
ameter of the normal gestational sac should
grow?
4. Physicologic hernation of fetal intestines out- 12 weeks
side the abdomen should not be seen after CRL measures > 45mm
what gestational age?
5. The base of the umbilical cord should not ex- 7 mm
ceed?
6. One should be able to transabdominally image 3600 units/liter
a gestational sac when the IRC level for hCG is 2000 units/liter
= or >?
Transvaginally?
7. Patient is 10 weeks by menstrual dates with Hydatiform Mole
pregnancy induced hypertension. You suspect?
8. Almost always pathonomonic of a molar preg- Preeclamsia
nancy in the 1st trimester?
9. Pregnant patient presents with bledding and Dilated cervix
cramping. What would be suspect of an in-
evitable abortion?
10. An ectopic with a normal IUP? Heteroectopic pregnancy
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
11. To differentiate an early IUP from a pseudoges- Yolk Sac
tational sac, it is helpful to visualize?
12. A yolk sac is considered abnormal when it's 6mm
diameter exceed? Shape? Appearance? Irregulary shaped
Calcified
13. What drug can be used to treat an early unrup- Methotrexate
tured ectopic pregnancy in order to preserve
fertility?
14. The most common position of a uterus is? Anteflexed
15. In a ruptured extopic pregnancy, which section Interstitual
of the tube is most life threatening? Rupture is accompanied by bleed-
Why? ing from the uterin arteries
16. The double bleb sign refers to? The amnion and yolk sac
17. At how many weeks, the normal gestational 8 weeks
sac should occupy 1/2 of the uterine cavity and 10 weeks
show a yolk sac, embryo and heart beat?
At how many weeks will it fill the uterine cavity
with a well defined fetus?
18. 1. A group of rare tumors that involve abnormal Trophoblastic Disease
growth of cells inside the uterus. They start in
cells that would normaly develope into the pla-
centa.
19. Most common form of Trophoblastic Disease? Complete Hydatiform Mole
20. A Hydatidiform Mole from trophoblastic neo- Complete
plasia without the presents of an embryo?
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
21. A Hydatidiform Mole from trophoblastic neo- Partial
plasia with an abnormal embryo or fetus.
22. Functional ovarian cysts are called? Theca Lutein Cysts
23. Associated with: Trophoblastic Disease
Hydatididform Mole
Theca Lutein Cysts
Pregnancy induced hypertension
Hyperemesis gravidarum
Large for gestational age
All characteristics of?
24. Most reliable calculation for the EDC is? CRL
25. Because of spinal segmentation, CRL begins to 11 weeks
loose accuracy after how many weeks?
26. The structure that initially maintains a connc- Vitelline Duct (omphalomesenteric
tion between the yolk sac and embryo once duct)
they diverge from each other?
Contains and artery and a vein.
27. Thickening of the nuchal soft tissue during the Nuchal translucency
1st trimester and a strong corrolation for chro-
mosomal defects?
28. A procedure preformed to treat and incompen- Shirodkar Procedure
tent cervix. The most complicated, the suture is
almost completely buried beneath the cervical
mucosa?
29. McDonald Procedure
, OB/GYN ARDMS Registry Review
Study online at https://quizlet.com/_1emgja
A procedure preformed to treat and incompen-
tent cervix with a less invasive outcome using a
purse string suture.
30. With this type of pregnancy, the most common Ectopic
symptom is pain?
31. An ectopic pregnancy in this part of the tube is Interstital
more life threatening?
32. Normally, nuchal translucency doesn't exceed? 3mm
33. This lies within the atria of the lateral ventricals Chorid Plexus
bilaterally?
34. In ruling out hydrocephalus, where would one Lateral Ventricular Atria
1st begin to see enlargement?
35. The normal measurements for the lateral ven- 1cm in largest dimension trans-
tricla of the fetal brain are? versely
36. When the fetal spine is imaged transversly, the 3 ossidication centers (2 posterior
ultrasound demonstrates? pointing toward each other, 1 ante-
rior)
37. What US modality would you us to prove fetal M-mode
life on a frozen image?
38. The anatomic structure closest to the spine in a Left Atrium
4-chamber heart view is?
39. This occupies 1/3 of the chest cavity pointing Fetal Heart
toward the left side of the fetus?
