Point Questions OB 2
during the sonographic exam the sonographer identifies polyhydramnios, a small abdominal circumference and a chest mass. what is the most likely cause for these findongs
congenital diaphragmatic hernia
which of the following is a cause for immune fetal hydrops
R H incompatibility
choose the malformation occuring most often in male fetuses
bladder extrophy
which if the following is the ratio of B P D to O F D
cephalic index - C I
identify the anatomy imaged on the axial plane at the ventricle level
choroid plexus
select the term that describes abnormal digit position
clyinodactyly
define aplasia
complete absence of a body part
which process describes the finding of cystic replacement of fetal lung tissue
congenital multicystic adenomatoid malformation aka C C A M
what term does I S O U G use to describe the fetal head
cranial
sonographic characteristic of a cystic hygroma
cystic mass with septa
which of the following demonstrates cystic dilations of the 4th ventricle
dandy-walker malformation
when does the neural tube completely close
day 26
identify the cause of pulmonary hyperplasia
oligohydramnios
wshat portion of the femur do you measure to obtain the length
osseous femoral diaphysis
term describing the ability of embryonic cells to differentiate into any cell type
pluripontent
which of the following describes the umbilicl cord hernia
protrusion of a small amount of intestine at the umbilicas
identify the congenital urinary problem which results in the absence of the abdominal muscle
prune belly syndrome
which of the following is the incomplete development of lung tissue
pulmonary hypoplasia
choose the head end of the neural tube
rostral
which of the following is a finding seen with agenesis of the corpus collusum
tear-dropped shaped ventricle
identify the anatomy imaged on the axial plane at the B P D level
thalami
identify the anatomical landmarks used to determine the correct level to measure B P D
thalamus, falx, C S P
where on the image is the fetal spine in the breech fetus faceing posterior
top of the image
cerebellar hyperplasia with herniation into the spinal canal describes which of the following malformations
type 4 Arnold-Chiari malformation
what is the sonographic appearance of type 1 C C A M
unilateral 2.5 cm cyst with internal echogenic material
identify the term describing the front or belly of the fetus
ventral
choose the left mean renal volume for a 35 week fetus
13.2 cm cubed
what is the A P diameter of the cerebellar vermis at 33.2 weeks
20.1 mm
what is the head circumference for a 29 week fetus in the 95th percentile
296 mm or 29.6 cm
what is the gestational age for a fetus with B P D of 82 mm
33 Weeks
select the imaging mode that adds motion to a static data sheet
4 D
how long is the fetal kidney at 35 weeks
4.2 cm or 42 mm
stage where the neural crest cells organize into the neural tube
7
what measurement is the most important indicator of fetal weight
A C - abdominal circumference
what is the correct method to measure B P D
Transverse outer to inner
define dolichocephaly
a long narrow head
select the sonographic characteristic of anecephaly
absent neural tissue
a fetus with a large single ventricle, prominent fused thalami, cyclopia, and a median cleft lip has which type of defect
alobar holoprosencephaly
select the fetal cause for immune hydrops
anemia
which of the following is the congenital absence of one or both eyes
anophthalmia
choose the abnormal development of the first portion of the small bowel
duodenal atresia
which term describes brighter echoes than the surrounding tissue
echogenic
which term describes the in utero fetal position
fetal lie
choose the sonographic finding seen with renal agenisis
flattened adrenal gland in the renal fossa
what fetal weight is considered macrosomia
greater than 4000 g
which of the following is the most common anomaly found with duodenal atresia
growth retardation
identify the anatomy closest to the cervix in the vortex lie
head
what type of resolution describes the minimum distance between 2 bright echoes perpendicular to the beam path
lateral resolution
which anatomy indicates the correct level to measure the abdominal circmfrence
left portal vein