31 Flashcards
The fetal expected birth date is known as EDC or
EDD
The most accurate fetal measurement in the second and third trimesters can be obtained from
Multiple parameters
The head circumference should be measured on the same image used for the _____________________ measurement.
BPD
The outer ________________ line must be included in the abdominal circumference so that AC is not underestimated
skin
The femur length can be reliably used after ____weeks gestation.
14
Macrosomia equates to a fetus over ______________ g.
4000
The purposes for second and third trimester measurements of a fetus are estimating _________________ and determining the size and development.
fetal age
Conception normally takes place about ________________ weeks after LMP.
2
Exclude ______________ of the scalp when measuring from the leading edge of theparietal bone for a BPD.
Soft tissue
If the fetal head is low in the pelvis, a(n) ________________transducer may allow accurate BPD measurements.
Endovaginal
Ratio of the BPD to the OFD is_
cephalic index
Measurement from the frontal to the occipital obtained at the same level as the BPD is
OFD
measurements of the embryo result in the most accurate dating.
Multiple
averaging multiple measurements, ____ or more is the preferred method of any given parameter.
3
what are the recommended measurements to be obtained routinely as a minimum?
BPD, HC, AC AND FL
the BPD is measured at the level of the
CSP, thalamus, falx
size is relatively unaffected by fetal growth disturbances.
Cerebellar
abdominal circumference is considered more important as an indicator of __ than an indicator of fetal age.
Fetal weight
may be more accurate in estimating fetal age than the BPD in late pregnancy
femur length
low birth weight or ___ have been associated with higher incidences of neonatal morbidity and death.
IUGR
fetal weight by ultrasound is frequently requested to ruLe out all except:
BPP
the earliest successful BPD measurement can usually be obtained at week:
12
If the cerebellum is seen in BPD measurement, the plane is _____ in the posterior portion of the image.
Too low
The preferred measurement method for fetal growth is
average of multiple measurements, three or more
to obtain an accurate fetal age, the BPD measurement should be obtained before:
33 weeks
select the correct CI formula
BPD/FOD X 100
if the umbilical/ portal junction is not visualized while attempting an AC measurement, use the level of the fetal___
Stomach
preferred technique for measuring the fetal abdomen and head circumference is:
ecclipse
the normal duration of pregnancy is:
40 weeks from last LMP
select a fetal characteristic that is not a late gestational individuation.
bradycardia
