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Fetal-Growth Disorders

What can be said regarding birthweight in the United States?

a. All low-birthweight neonates are born preterm.

b. Of low-birthweight neonates, 3% are born at term.

c. The percentage of low-birthweight neonates has been decreasing since the mid-1980s.

d. None of the above

Given the graphic below, what can be said regarding the velocity of fetal growth at different gestational ages?

Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Fetal growth disorders. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 44-1.

a. At 24 weeks’ gestation, growth averages 5 g/day.

b. At 34 weeks’ gestation, growth averages

25–30 g/day.

c. There is considerable variation in the velocity of fetal growth.

d. All of the above

Elevated C-peptide levels are associated with which of the following?

a. Hyperinsulinemia

b. Hypercholesterolemia

c. Fetal-growth restriction

d. All of the above

Amino acids undergo which type of transport from maternal to fetal circulation?

a. Active transport

b. Passive diffusion

c. Facilitated diffusion

d. None of the above

This graph depicts the relationship between birthweight percentile and perinatal mortality and morbidity rates. Below which threshold value of birthweight percentile do perinatal mortality rates increase most rapidly?

Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Fetal growth disorders. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 44-3.

a. 3

b. 5

c. 7

d. 10

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