1|Page
ARDMS OBSTETRICS /ARDMS OB/GYN ACTUAL
EXAM AND PRACTICE EXAM NEWEST 2025/ 2026
COMPLETE 300 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
VERSION!!!
A circumvallate placenta can only be demonstrated during
what portion of pregnancy? - ANSWER-Mid second
trimester
Early in pregnancy, the entire surface of the gestational
sack is covered with the ViLLI, as the pregnancy
progresses, the VEILLi usually regress over most of the
surface of the sac, and that remains becomes the
placenta. If this regression does not occur, the placenta
may cover the entire surface of the sack, if it is patchy,
there may be two or more separate areas of placenta
formation. And either case, this is called what? -
ANSWER-Placenta membranacea
Placenta membranacea - ANSWER-Fetal membranes
covered by chorionic villi due to failure of chorion
differentiation into the chorion laeve and chorion
frondosum
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Succenturiate lobe - ANSWER-Accessory lobe of placenta
located away from the main placenta body. It is connected
to the main placenta via large blood vessels That course
through the membranes that accompany it
Bipartite lobe - ANSWER-Is one that is divided into two
approximately equal size lives in is sometimes called but I
bilobed placenta
Annular placenta - ANSWER-A ring shaped placenta that
attaches circumferentially to the myometrium.
Between succentruriateblobes, bipartite placenta, and
annular placenta which types of placentas are seen on
ultrasound and which are not? - ANSWER-
Succenturiateblobes and bipartite placentas are seen on
ultrasound. And annular placenta is not seen on
ultrasound.
Sonographic findings of succenturiateblobes and bipartite
placentas - ANSWER--two masses of placenta tissue that
appear unconnected. -Color Doppler imaging will show
robust flow in the blood vessels that vascularize the
accessory lobe. - when the lines are of equal size, the
primary lobe can be identified by the presence of the
umbilical cord insertion on its chorionic surface.
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After 33 weeks, more that 50% of placentas contain some
degree of calcification. - ANSWER-Calicifation is a normal
part of placental aging ( fact card)
Where are calcifications usually found on the placenta? -
ANSWER-At the base of the placenta, in the septa, and in
the subchorionic and perivillous spaces.
Calcification of the placenta is more common in women
with what? - ANSWER--low parity-smoke cigarettes-
mothers who have thrombotic disorders and are on
anticoagulants such as heparin or aspirin therapy.
Coumadin crosses placenta discontinued first trimester
due to fetal abnormalities correlation
Subchorionic hematoma - ANSWER-bleeding btw the
endometrium and the gestational sac.
- Pts are managed expectantly until symptoms resolve or
additional findings develop
Subchorionic lesions and cystic or hypoechoic areas
immediately under the chorionic membrane adjacent to
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the fetal surface of the placenta are typically acute or
chronic areas of - ANSWER-Thrombus
Are subchorionic lesions and cyst a significant finding in
terms of the placenta? - ANSWER-No they are
insignificant.
Sonographic findings of subchorionic thrombotic lesions -
ANSWER-Echogenic focus beneath the chorionic plate
Sonographic findings of subchorionic cystic lesions -
ANSWER-Well circumscribed, anechoic areas beneath the
chorionic plate
Most hypoechoic or cystic areas in the mid placenta are
due to - ANSWER-Intervillous thrombus in the space
between the fetal and the maternal sides of the placenta.
Early in the placenta hemorrhagic process, flow may be
observed within these spaces as hypoechoic areas mid
placenta and may be termed - ANSWER-Maternal lakes
ARDMS OBSTETRICS /ARDMS OB/GYN ACTUAL
EXAM AND PRACTICE EXAM NEWEST 2025/ 2026
COMPLETE 300 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
VERSION!!!
A circumvallate placenta can only be demonstrated during
what portion of pregnancy? - ANSWER-Mid second
trimester
Early in pregnancy, the entire surface of the gestational
sack is covered with the ViLLI, as the pregnancy
progresses, the VEILLi usually regress over most of the
surface of the sac, and that remains becomes the
placenta. If this regression does not occur, the placenta
may cover the entire surface of the sack, if it is patchy,
there may be two or more separate areas of placenta
formation. And either case, this is called what? -
ANSWER-Placenta membranacea
Placenta membranacea - ANSWER-Fetal membranes
covered by chorionic villi due to failure of chorion
differentiation into the chorion laeve and chorion
frondosum
,2|Page
Succenturiate lobe - ANSWER-Accessory lobe of placenta
located away from the main placenta body. It is connected
to the main placenta via large blood vessels That course
through the membranes that accompany it
Bipartite lobe - ANSWER-Is one that is divided into two
approximately equal size lives in is sometimes called but I
bilobed placenta
Annular placenta - ANSWER-A ring shaped placenta that
attaches circumferentially to the myometrium.
Between succentruriateblobes, bipartite placenta, and
annular placenta which types of placentas are seen on
ultrasound and which are not? - ANSWER-
Succenturiateblobes and bipartite placentas are seen on
ultrasound. And annular placenta is not seen on
ultrasound.
Sonographic findings of succenturiateblobes and bipartite
placentas - ANSWER--two masses of placenta tissue that
appear unconnected. -Color Doppler imaging will show
robust flow in the blood vessels that vascularize the
accessory lobe. - when the lines are of equal size, the
primary lobe can be identified by the presence of the
umbilical cord insertion on its chorionic surface.
,3|Page
After 33 weeks, more that 50% of placentas contain some
degree of calcification. - ANSWER-Calicifation is a normal
part of placental aging ( fact card)
Where are calcifications usually found on the placenta? -
ANSWER-At the base of the placenta, in the septa, and in
the subchorionic and perivillous spaces.
Calcification of the placenta is more common in women
with what? - ANSWER--low parity-smoke cigarettes-
mothers who have thrombotic disorders and are on
anticoagulants such as heparin or aspirin therapy.
Coumadin crosses placenta discontinued first trimester
due to fetal abnormalities correlation
Subchorionic hematoma - ANSWER-bleeding btw the
endometrium and the gestational sac.
- Pts are managed expectantly until symptoms resolve or
additional findings develop
Subchorionic lesions and cystic or hypoechoic areas
immediately under the chorionic membrane adjacent to
, 4|Page
the fetal surface of the placenta are typically acute or
chronic areas of - ANSWER-Thrombus
Are subchorionic lesions and cyst a significant finding in
terms of the placenta? - ANSWER-No they are
insignificant.
Sonographic findings of subchorionic thrombotic lesions -
ANSWER-Echogenic focus beneath the chorionic plate
Sonographic findings of subchorionic cystic lesions -
ANSWER-Well circumscribed, anechoic areas beneath the
chorionic plate
Most hypoechoic or cystic areas in the mid placenta are
due to - ANSWER-Intervillous thrombus in the space
between the fetal and the maternal sides of the placenta.
Early in the placenta hemorrhagic process, flow may be
observed within these spaces as hypoechoic areas mid
placenta and may be termed - ANSWER-Maternal lakes
