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fetal growth and development

Terms in this set (25)

ovulation to fertilization
ovum
fertilization to implantation
zygote
implantation to 5-8 wks
embryo
developing embryo and placental structures throughout pregnancy are called
conceptus
union of ovum and spermatozoon
fertilization
viability
22-24 weeks
contact between growing structure and uterine endometrium, approx 8-10 days after fertilization
implantation
McDonalds rule
take the tape measurer from the symphysis pubis to the top of the fundus. the measurement should match the number of weeks you are
oligohydramnios
Less than 500 mL amniotic fluid
polyamnios can indicate
problem with esophagus or GI tract
with breech baby where do we put monitor to hear FHT
above umbilicus
Percutaneous Umbilical Blood Sampling (PUBS)
Procedure for obtaining fetal blood through ultrasound-guided puncture of an umbilical cord vessel to detect fetal problems such as inherited blood disorders, acidosis, or infection; also called cordocentesis
amniocentesis
A technique of prenatal diagnosis in which amniotic fluid, obtained by aspiration from a needle inserted into the uterus, is analyzed to detect certain genetic and congenital defects in the fetus.
problematic characteristics of amniotic fluid
foul smell (infection), green or yellow (meconium, stress)
weight gain at end of first trimester
3-4.5 pounds
weight gain at end of second trimester
3-5 pounds a month
ductus arterioles shunts blood
from pulmonary artery to the aorta
pituitary gland is involved in
labor and lactation
urinary frequency is common in what times
first trimester and later in third
what does the lecithin/sphingomyelin ratio need to be for lungs to be mature
2:1
biophysical profile components
fetal breathing movements, gross body movement, fetal tone, reactive FHR, quantitative AFV
basic organogenesis is complete by
8 weeks
MSAFP high and low
high indicates possible NTD, low indicates chromosomal anomalies
Positive Hegar's Sign
lower portion of uterus feels soft on palpation
how early can FHR be heard on doppler
11-12 wks
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