amniotic fluid Flashcards
what forms the placenta?
amniotic fluid
surrounds the embryo during pregnancy
amnion
normal value
800-1200 mL (3rd trimester)
collection of amniotic fluid
amniocentesis
when is amniocentesis performed?
14th week of gestation
when can you diagnose congenital disorders such as neural tube defects and Down’s syndrome
second trimester
this term provides information on the severity of HDN
third trimester
types of amniocentesis
transabdominal and vaginal
this type of amniocentesis is associated with increased risk of infection
vaginal amniocentesis
method of measurement for lecithin: sphingomyelin ratio
thin layed chromatography (tlc)
what index is considered to indicate enough lung fetal surfactant
0.47
excessive sweating
cystic fibrosis
initially produces in small quantities by the fetal yolk sac
afp