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Fetal-Growth Disorders

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What can be said regarding birthweight in the United States?

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a. All low-birthweight neonates are born preterm.

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

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

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d. None of the above

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

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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.

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

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b. At 34 weeks’ gestation, growth averages

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25–30 g/day.

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

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d. All of the above

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

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a. Hyperinsulinemia

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b. Hypercholesterolemia

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c. Fetal-growth restriction

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d. All of the above

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

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a. Active transport

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b. Passive diffusion

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c. Facilitated diffusion

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d. None of the above

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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?

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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.

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a. 3

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b. 5

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c. 7

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d. 10

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