OB Exam 1 Flashcards
(194 cards)
What is the goal to genetic testing?
Identify risk
Your client wants to know how to tell if she is ovulating. Select all that apply:
A. Cervical mucus is thick, sticky, and opaque white
B. Basal body temp drops slightly, then spikes 1/2 a degree
C.menstural period is just starting, spotting
D.positive test for spike in LH
E. Levels of progesterone are decreasing
B,D
How long is an egg fertile for after ovulation?
12-24 hours
Where does fertilization occur?
Outer 1/3 of fallopian tube
how long does it take a zygote to travel to the uterus?
3-4 days
Morula
“Solid ball of cells”, gives rise to blastocyst= embryoblast(embryo) and trophoblast (placenta)
when does blastocyst implant into endometrium?
6-10 days after conception, usually into fundus
How long does the sperm remain viable in female reproductive tract?
At least 2-3 days
(possibly 3-5 days)
Which is counted as the first day of the menstrual cycle?
A. First day of bleeding during menses
B. Day of ovulation
C. Last day of bleeding during menses
D. Day before the menstrual bleeding starts
The first day of bleeding during menses
How long after intercourse could she get pregnant?
Sperm can reach site of fertilization in 5 minutes; conception likely up to a week after intercourse (sperm viable 3-5 days in female tract) and implantation (pregnancy) 2-3 weeks after
How long after ovulation could she get pregnant?
five days before ovulation, the day of ovulation, and one day after ovulation (sperm can live 3-5 days, ova fertile for 24 hours)
What is included in genetic counseling?
Information, education, and support
How many pregnancy genetic tests are there?
4
What is the first (earliest) genetic test that can be done in pregnancy?
CVS (chorionic villus sampling)
When can a CVS be done?
10-13 weeks
What is a CVS?
Chorionic villus sampling: tissue sample of the placenta
Indicated: risk for giving brith to neonate with genetic chromosomal abnormality (cannot determine spina bidifida or anencephaly)
Full bladder necessary for testing
What are the four pregnancy genetic tests?
Chorionic villus sampling, amniocentesis, alpha-fetoprotein, and level 2 ultrasound/targeted ultrasound
What is an amniocentesis?
Sample of amniotic fluid, empty bladder needed (avoid puncture)
When is an amniocentesis done?
15-20 weeks
What is an AFP test?
Alpha-fetoprotein test of maternal blood
When is an alpha-fetoprotein test done?
15-18 weeks
When is a level 2 ultrasound (targeted ultrasound) done?
After 18 weeks
What is a level 2/targeted ultrasound?
Complete scan of fetal anatomy
What area is more likely to be damaged during childbirth?
Perineum