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1. Which first trimester measurement is only accurate until about 8 weeks?
A
Gestational sac
B
Yolk sac
C
CRL
2. Which of these is the correct formula for Mean sac diameter?
A
Length+Width+ Height /3
B
Length+Width+Height
C
Length x width x height
3. Which measurement produces gestational dating standard deviations of ± 5 to 7 days?
A
MSD
B
Yolk sac
C
CRL
4. Which first trimester measurement is considered accurate for the first 12 weeks?
A
MSD
B
Yolk sac
C
CRL
5. CRL measurements can be obtained as early as ______ weeks using transvaginal sonography.
A
4
B
5 1/2
C
6
6. Gestational age in days may be obtained by adding _____ to the CRL in mm.
A
40
B
41
C
42
7. Which provides a definitive diagnosis of chromosomal abnormalities?
A
Invasive techniques
B
Noninvasive techniques
C
8. Normal 1st trimester fetus has small fluid pocket along his/her back, this is known as:
A
PAPP-A
B
Nuchal fold
C
Nuchal translucency
9. Nuchal translucency measurement is accurate when measure between:
A
10-15weeks
B
11-14 weeks
C
12-16weeks
10. To measure nuchal translucency the baby must be in imaged in which plane?
A
Sagittal
B
Midsagittal
C
Oblique
11. For an accurate nuchal translucency the baby's head must be in which position?
A
Flexed
B
Neutral
C
Extended
12. NT measurement should be taken at the
A
Narrowest point
B
Widest point
C
Lowest point
13. Small nose and mid-face hypoplasia are well-known components of:
A
Trisomy 18
B
Down syndrome
C
Trisomy 13
14. The mortality rate for multiples is:
A
10-15x higher
B
7-10x higher
C
5x higher
15. The number of Yolk Sacs is consistent with the number of:
A
Chorionic membranes
B
Amniotic membranes
C
Fetus
16. Which of the following accounts for 70% of twins and has 2 separate gestational sacs, yolk sacs, amniotic membranes and embryos?
A
Monochorionic/diamniotic
B
Dichorionic/diamniotic
C
Monochorionic/monoamniotic
17.
A
B
C