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Postterm Pregnancy

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What is the threshold of completed weeks after which a pregnancy is considered prolonged?

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a. 40 weeks

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b. 41 weeks

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c. 42 weeks

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d. 43 weeks

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Which of the following is true regarding calculated gestational age?

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a. Underestimated if based on last menstrual period (LMP) alone

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b. Overestimated if based on first-trimester sonographic examination

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c. Overestimated if based on second-trimester sonographic examination and LMP compared with LMP alone

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d. None of the above

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Rare fetal-placental factors associated with postterm pregnancy include which of the following?

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a. Wilms tumor

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b. Anencephaly

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c. Adrenal hyperplasia

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d. Autosomal-recessive placental sulfatase overproduction

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This graphic suggests which of the following regarding perinatal mortality rates (PMR)?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Postterm pregnancy. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 43-2.

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a. PMR was lowest in 1943–1952.

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b. PMR was higher in 1977–1978.

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c. PMR increases after 41 weeks.

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d. PMR increases after 40 weeks.

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Major causes of death in postterm pregnancy include which of the following?

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a. Placenta accreta

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b. Placental abruption

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c. Unexplained stillbirth in diabetic patients

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d. Cephalopelvic disproportion in prolonged labor

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This graphic illustrates which of the following regarding perinatal mortality rates (PMR)?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Postterm pregnancy. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 43-3.

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