WRONG EXAM OB Qs Flashcards
For the normal BPP, the amniotic pocket should measure at least
1cm in two perpendicular planes
What will be visualized at the level of the HC
3rd ventricle, thalamus and CSP
With miscarriage, the serum hCG value will be
decreased
With anencephaly, the MSAFP value will be
elevated
With gastroschisis, the MSAFP valu will be
elevated
The quad screen includes an analysis of
hCG, AFP and Inhibin A
In the TPAL designation, the L refers to
live births
The clinical manifestations of supine hypotensive syndrome include
tachycardia, nausea, pallor
Painless 2nd trimester bleeding is most often associated with
placenta previa
What is visualized during BPP
fetal tone, thoracic movement and fetal breathing
What would be decreased in the presence of edwards syndrome
estriol, hCG and AFP
Something that is idiopathic is said to be
from an unknown cause
What is the fetal presentation when the fetal buttocks are closest to the cervix
frank breech
The triple screen typically includes an analysis of
hCG, AFP and estriol
What would be least likely associated with an elevation in MSAFP
turners syndrome
With a normal pregnancy, the first structure noted within the decidualized endometrium is the
chorionic sac
What is often used to medically treat an ectopic pregnancy
methotrexate
In the first trimester normal hCG levels will
double every 48 hours
Compared with normal IUP, the ectopic pregnancy will have a
low hCG
The first sonographic identifiable sign of pregnancy is the
decidual reaction
NT measures are typically obtained between
11 and 14 weeks
Clinical features of an ectopic pregnancy are
pain, vaginal bleeding and shoulder pain
In the early gestation, where is the secondary yolk sac located
chorionic cavity
What are associated with a lower than normal hCG level
ectopic pregnancy, blighted ovum, spontaneous abortion
Clinical findings consistent with a complete molar pregnancy
vaginal bleeding, hypertension, uterine enlargement
What is the most likely metastatic location for GTD
lungs
What structure does the posterior fossa cyst associated with DWM communicate
4th ventricle
Sonographic findings of arnold-chiari 2 malformation
enlarged massa intermedia, hydrocephaly, obliteration of the cistern magna
Development of fluid-filled cleft within the cerebrum is consistent with
schizenchephaly
The “sunburst” of the cerebral sulci is a sonographic finding of
agenesis of CC
Genetic disorder that includes craniosynostosis, midline facial hypoplasia and syndactyly
apert syndrome
The 3rd ventricle communicates with the 4th ventricle at the
aqueduct of sylvius
The 4th ventricle is located anterior to the
cerebellar vermis
A normal shaped skull is termed
mesocephaly
A strawberry shaped skull is commonly associated with
trisomy 18
The band of tissue that allows communication between the right and left cerebral hemispheres is the
corpus callosum
Sonographic features of alobar holoprosencephaly
cyclopia, monoventricle and fused thalamus
What fetal suture is located within the frontal bone along the midline of the forehead
metopic suture
Lack of sulci within the fetal cerebrum is a reliable indicator of
lissencephaly
What would not normally be located within the midline of the fetal brain
lobes of the thalamus
Condition in which the frontal horns are small and the occipital horns are enlarged is referred to as
colpocephaly
An increased nuchal fold is most likely associated with
trisomy 21
There is a definite link between microtia and
down syndrome
The optimal scan plane to visualize micrognathia is
sagittal
The measurement obtained between the lateral walls of the orbits is referred to as
binocular diameter
At what level is the nuchal fold measurement obtained
CSP
The condition in which there is no nose and a proboscis separating two close set orbits is
ethmocephaly
The nuchal fold measurement is typically obtained
between 15 and 21 weeks
What is the anomaly of the spine in which there is absence of all of part of a vertebral body and posterior element
hemivertebra
The condition associated with the absence of the sacrum and coccyx
caudal regression syndrome
Characteristics of spina bifida occulta
closed defect, sacral dimple and hemangioma
In VACTERL association the letter C stands for
cardiac
A disorder that results in abnormal bone growth and dwarfism is
achondroplasia
Achondroplasia is associated with all of the following
frontal bossing, flattened nasal bone, trident hand
Abnormality that results in limitation of the fetal limbs as a result of
arthrogryposis
The thalamic tissue located within the 3rd ventricle of the brain that can become enlarged with arnold chiari 2 malformation is the
massa intermedia
Rhizomelia denotes shortening of the
proximal segment of a limb
An absent sacrum and coccyx is referred to as
caudal regression syndrome
Absent long bones with the hands and feet arising from the shoulders and hips describes
phocomelia
Songoraphic findings of achondrogenesis
micromelia, absent mineralization of the pelvis and polyhydramnios
28 week pregnancy, you note that when pressure is applied to the fetal skull, the skull can be easily distorted
osteogenesis imperfecta
Bell-shaped chest and multiple fetal fractures are indicative of
osteogenesis imperfecta
The exaggerated distance between the first toe and the second toe is
sandal gap
Visualize a mass extending from the distal spine of a fetus. What COULD it be
SCT, meningocele, meningomyelocele
What conditions associated with bilateral renal agenesis, oligohydramnios and fusion of the lower extremities
sirenomelia
Opening located right anteromedially within the diaphragm
foramen of morgagni
Sonographic signs of ebstein anomaly
enlarged right atrium, fetal malpositioned tricuspid valve, fetal hydrops
An EIF is most often seen within the
left ventricle
Most common fetal cardiac tumor
rhabdomyoma
Sonogaphic features of pentalogy of cantrell
omphalocele, cleft sternum, diaphragmatic hernia
Fetal shunt that connects the pulmonary artery to the aortic arch
ductus arteriosis
The moderator band is located within the
right ventricle
Separate mass of non functioning fetal lung tissue is referred to as
pulmonary sequestration
The tricuspid valve is located between the
right ventricle and right atrium
most common sonographic appearance of pulmonary sequestration is a
triangular, echogenic mass within the chest
The embryonic heart begins as
two tubes
Sonogrgraphic “bat-wing” sign is indicative of
pleural effusion
The mitral valve is located between the
left ventricle and left atrium
The blood returning from the lungs through the pulmonary veins enters into the
left atrium
The fetal heart is fully formed by
10 weeks
What is associated with echogenic bowel
cystic fibrosis
What are associated with omphaloceles
trisomy 18, pentalogy of cantrell and IUGR
What are associated with esophageal atresia
down syndrome, VACTERL association and edwards syndrome
What location does gastroschisis occur more often
right lateral of cord insertion
What are associated with gastroschisis
normal cord insertion, elevated MSAFP and periumbilical mass
Inherited disorder in which mucus secreting organs produce thick and sticky secretions instead of normal secretions
cystic fibrosis
What organs produce amniotic fluid after 12 weeks
fetal kidneys
An omphalocele is associated with
pentalogy of cantrell, trisomy 18 and patau syndrome
Duodenal atresia and esophageal atresia are associated with
polyhydramnios
