PU Fetal Biometry and Growth Assessment 2

Question 1

Which bone is measured to assess femur length (FL) in fetal biometry?

Accepted Answer

The longest bone in the fetal thigh

Answer

The longest bone in the fetal lower leg

Answer

The humerus of the upper arm

Answer

The radius of the forearm

Question 2

What does a head circumference to abdominal circumference (HC/AC) ratio greater than 1.0 after 36 weeks suggest?

Accepted Answer

Asymmetric IUGR

Answer

Symmetric IUGR

Answer

Macrosomia

Answer

Normal growth

Question 3

Serial ultrasound exams to monitor fetal growth are typically performed how far apart?

Accepted Answer

Every 3–4 weeks

Answer

Every week

Answer

Every 6–8 weeks

Answer

Daily

Question 4

What is macrosomia defined as in ultrasound practice?

Accepted Answer

Estimated fetal weight above the 90th percentile

Answer

Estimated fetal weight above the 75th percentile

Answer

Birth weight over 3,000 grams

Answer

Femur length above normal limits

Question 5

Which measurement is most affected by fetal head shape variations such as dolichocephaly?

Accepted Answer

Biparietal diameter (BPD)

Answer

Head circumference (HC)

Answer

Abdominal circumference (AC)

Answer

Femur length (FL)

Question 6

The cephalic index (CI) is calculated as which ratio?

Accepted Answer

BPD divided by occipitofrontal diameter × 100

Answer

HC divided by BPD × 100

Answer

AC divided by HC × 100

Answer

FL divided by BPD × 100