Amnitoic Fluid Chapter 4 Pregnancy

Front 1

Amniotic fluid FACTS:

Back 1

produced by amniotic epithelium; water transfers across amnion and through fetal skin; in 2nd trimester fetus starts to swallow, urinate and inspire amniotic fluid.

Front 2

Amniotic fluid volume maintenance:

Back 2

Fetal swallowing seems to be critical mechanism since polyhydraminos is consistently present when fetal swallowing is inhibited, but other factors contribute to volume balance.

Front 3

Define Polyhydraminos:

Back 3

Amniotic Fluid Indes (AFI): greater than 24-25 cm

Front 4

Polyhydraminos occurs:

Back 4

1% of all pregnancies

Front 5

Polyhydraminos associated with?

Back 5

2/3 are idiopathic
1/3 associated with fetal anomalies, maternal diabetes, or multiple gestation.

Front 6

Examples of fetal anomalies associated with polyhydraminos?

Back 6

Central nervous system or GI anomalies
ex. anecephaly or esophageal atresia.

Front 7

Signs & symptoms of of polyhydraminos:

Back 7

Uterine size far beyond expected for gestational age.
Difficulty auscultating FHR and palpating fetal parts.
Mechanical pressure exerted by large uterus: example complaints of dyspnea, edema, heartburn, nausea.

Front 8

Pregnancy outcome with polyhydraminos:

Back 8

the greater the polyhydraminos the higher the perinatal mortality; preterm labor also increase; also associated with erythroblastosis.

Front 9

Management of polhydraminos:

Back 9

Treat at only if symptomatic
1. Amniocentesis to relive maternal distress
2. Indomethacin