Amniotic fluid Flashcards

1
Q

Describe the pattern of amniotic fluid volume during pregnancy.

A

Mean AFV increases from 250 mL to 800 mL between 16 to 32 weeks.
Then remains stable until term.
Than declines to 500 mL at 42 weeks.

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2
Q

Where does amniotic fluid initially come from?

A

Unsure, probably transudate of maternal and fetal plasma

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3
Q

Where does the rest of amniotic fluid come from?

A

Fetal fluid production 300-400 mL/day near term.

  • Lung fluid
  • Urine primary source, fetus produces 400-1200mL/day.
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4
Q

Near term, how much fetal swallowing/resorption of amniotic fluid occurs?

A

200-500mL/day

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