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Amnionic Fluid

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Which of the following conditions is not related to an absence or diminution of amnionic fluid volume during fetal development?

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a. Contractures

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b. Pulmonary hypoplasia

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c. Abdominal wall defects

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d. Gastrointestinal tract development

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What is the normal amnionic fluid volume at term?

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a. 300 mL

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b. 800 mL

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c. 1200 mL

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d. 1500 mL

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Which of the following is NOT a significant source for fluid in the amnionic cavity in the first trimester?

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a. Fetal skin

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b. Fetal urine

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c. Flow across amnion

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d. Flow across fetal vessels

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In a normal fetus at term, what is the daily volume of fetal urine that contributes to the amount of amnionic fluid present?

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a. 250 mL

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b. 500 mL

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c. 750 mL

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d. 1000 mL

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A 28-year-old primigravida presents with a 3-day history of fever, vomiting, and diarrhea at 28 weeks’ gestation. Several family members are also sick at home with similar complaints. During sonographic evaluation, her fetus is appropriately grown, but her amnionic fluid index is below the 10th percentile for the gestational age. What is the most likely explanation for this finding?

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a. Increased fetal swallowing

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b. Decreased fetal serum osmolality

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c. Increased maternal serum osmolality

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d. Probable premature rupture of membranes

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Amnionic fluid volume is a balance between production and resorption. What is the primary mechanism of fluid resorption?

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a. Fetal breathing

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b. Fetal swallowing

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c. Absorption across fetal skin

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d. Absorption and filtration ...

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