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15 Cards in this Set
- Front
- Back
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Purpose of amniotic fluid |
allows the fetus to move freely within the amniotic cavity while maintaining intrauterine pressure and protecting the developing fetus |
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Contributors to the production of amniotic fluid |
Umbilical cord membranes lungs skin kidneys |
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Volume of amniotic fluid increases until the _week |
34 weeks |
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Amniotic fluid appears most generous..... |
20-30 weeks increases by 10mL per day |
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Vernix caseosa |
fatty material found on fetal skin and in amniotic fluid |
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Source of amniotic fluid early in gestation |
amniotic membrane |
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Amniotic fluid regulation |
Production of fluid with swallowing, fluid exchange in lungs, urination |
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Relationship between amount of amniotic fluid and lung development |
oligohydramos/ low amounts of amniotic fluid causes inadequate lung development
could cause small or hypoplastic lungs |
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Per week increases 11-15 weeks |
25mL |
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Per week increase 15-28 weeks |
50mL |
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Hydramnios/polyhydramnios |
increase in amniotic fluid AFI greater than 24cm Largest vertical pocket: > 8cm |
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Oligohydramnios |
decreased amount of amniotic fluid AFI less than 5cm Largest vertical pocket: 2cm or less |
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AFI method |
Uterine cavity is divided into 4 equal quadrants and the largest vertical pocket of amniotic fluid free from limbs or loops is measured
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Single-Pocket assessment |
Identify the largest pocket of amniotic fluid free from fetal components and measure
normal: 2-8cm
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Two-Diameter Pocket assessment |
Identify the largest pocket of amniotic fluid free from fetal components and measure 2 diameters, multiply them together
normal: 15-50cm |
