Fetal Biometry for 2nd and 3rd trimesters

Question 1

What is more accurate, BPD or HC?

Answer 1

HC

Question 2

What does FOD stand for?

Answer 2

Frontal Occipital Distance

Question 3

How to calculate cephalic index?

Answer 3

(BPD/FOD) x 100

Question 4

T or F? A brachycephalic head has a shorter BPD and lower CI?

Answer 4

False: Brachycephalic head has a wider BPD, shorter FOD, and higher CI

Question 5

Does a dolicocephalic head have a high or low BPD?

Answer 5

Lower BPD and CI below normal

Question 6

BPD and HC landmarks?

Answer 6

IH fissure
CSP
Thalamus

Question 7

Cerebellum, CM, and NF measurement landmarks?

Answer 7

CSP
Falx cerebri
Cerebellar hemispheres

Question 8

When would you measure BOD?

Answer 8

When determining hypo or hypertelorism

Question 9

Landmarks when taking AC?

Answer 9

Umbilical vein
Portal Vein
Stomach

Question 10

What measurement is the most important indicator of fetal weight?

Answer 10

AC

Question 11

What part of the femur do we measure?

Answer 11

Diaphysis

Question 12

Distal extremities are often not measured except in cases of?

Answer 12

Achondroplasia

Question 13

What abnormality is associated with a short femur?

Answer 13

Trisomy 21

Question 14

What does EDC stand for?

Answer 14

Estimated date of confinement

Question 15

What is the difference in dates between PROM and premature pre term PROM?

Answer 15

Pre term premature = before 37 weeks

PROM = 37 weeks until delivery

Question 16

Which biometry measurement is easily mismeasured?

Answer 16

AC