Chapter 57 Amniotic Fluid, Fetal Membranes, and Fetal Hydrops Flashcards Preview

Sonography > Chapter 57 Amniotic Fluid, Fetal Membranes, and Fetal Hydrops > Flashcards

Flashcards in Chapter 57 Amniotic Fluid, Fetal Membranes, and Fetal Hydrops Deck (14):
1

Amniotic fluid is produced by...

umbilical cord, the membranes, lungs, skin, and kidneys

2

Fetal production of urine and the ability to swallow begins between ___ and ___ weeks gestation.

8 and 11

3

The volume of amniotic fluid increases progressively until about ____ weeks' gestation.

33

4

An average increment increase of amniotic fluid of 25ml from the ____ to the _____ week.

11th, 15th

5

An average increment increase of amniotic fluid of 50ml from the ____ to the ____ week.

15th, 28th

6

From ___ to ____ weeks' gestation , amniotic fluid may appear rather generous.

20-30

7

Towards the end of the pregnancy, at between ___ and ___ weeks' gestation, a general decline is seen in the amniotic fluid.

38 and 43

8

AFI values are relatively stable after ____ weeks until the end of the third trimester. The AFI peaks late in the third trimester of pregnancy, with a rapid decline near term.

20

9

Normal amniotic fluid correlates with AFI of ____ to ____ cm.

10-20

10

Oligohydramnios correlates with an AFI of less than _____ cm, with the largest vertical pocket measuring ___ cm or less.

5, 2

11

Polyhyramnios correlates with an AFI of greater than ___cm with the largest vertical pocket measuring ____ cm or more.

24, 8

12

The maxium vertical pocket assessment of amniotic fluid is done by identifying the largest pocket of amniotic fluid, which should measure greater than ___ cm.

1

13

Chronic polyhydramnios usually occurs between ___ week and term.

28th

14

Polyhydramnios is defined as an amniotic fluid volume of greater than ____ ml.

2000