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Placental Abnormalities

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For which situation is pathological examination of the placenta considered most informative and cost effective?

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a. Multifetal gestation

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b. Cholestasis of pregnancy

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c. Maternal seizure disorder

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d. All obstetrical deliveries

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At term, which of the following most closely approximates typical placental disk measurements?

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a. 200 g weight, 10 cm diameter, 15 mm thickness

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b. 500 g weight, 20 cm diameter, 25 mm thickness

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c. 1000 g weight, 15 cm diameter, 35 mm thickness

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d. 1500 g weight, 25 cm diameter, 45 mm thickness

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Which of the following terms describes this surface of the placenta?

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a. Basal plate

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b. Amniochorion

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c. Placental bed

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d. Chorionic plate

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This is which type of placental variant?

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a. Bilobate placenta

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b. Succenturiate lobe

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c. Placenta fenestrata

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d. Circumvallate placenta

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Which placental variant is marked by arrowheads in this image?

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Used with permission from Dr. Heather Lytle.

Graphic Jump Location
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a. Bilobate placenta

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b. Succenturiate lobe

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c. Placenta fenestrata

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d. Circumvallate placenta

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Compared with a normally shaped placenta, which complication of third-stage labor is more common with an undiagnosed succenturiate lobe?

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a. Cord avulsion

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b. Chorioamnionitis

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c. Uterine inversion

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