EXAM 1 Flashcards
(111 cards)
What is a teratogen? Examples?
- any drug, virus, infection, of other exposure that impacts fetal development
examples: tobacco, alcohol, drugs, ACE inhibitors, anticonvulsants, cat feces (toxoplasmosis), heat (hot tub), varicella/Zika/rubella
When is exposure to teratogens most harmful to the fetus?
during the first 8 weeks of gestation (this is the MOST CRITICAL timeframe)
When does the zygote embed into the uterus?
-about day 7
**What is the umbilical cord composed of?
2 arteries
1 vein
How much amniotic fluid is there at most?
800-1000ml (at around 34 wks)
*it decreases at term to 500-600ml to make room
What prenatal vitamins are most important? (5)
- folic acid
- iron
- calcium
- magnesium
- vitamin D
**What are presumptive signs of pregnancy? (6)
- amenorrhea
- N/V
- breast changes
- fatigue
- urinary frequency
- quickening
**What are probable signs of pregnancy? (7)
- Chadwick’s sign
- Goodell’s sign
- Hegar’s sign
- abdominal growth
- skin changes (melasma, linea nigra)
- ballottement
- positive pregnancy test
**What are signs that pregnancy is confirmed? (3)
- auscultation of the fetal heart (10-12 weeks)
- observation/palpation of fetal movement (by provider)
- ultrasound exam (4-8 weeks can confirm)
What is Chadwick’s sign?
-bluish color of the cervix and vaginal mucosa
What is Goodell’s sign?
-softening of the cervical tip
What is Hegar’s sign?
-softening of the lower uterus
How do we calculate the EDD (estimated due date)?
Nagele’s Rule
-first day of the last menstrual period - 3 months + 7 days
*if LMP is not known US or pelvic exam may give an estimate
What is gravidity?
-the number of pregnancies that woman has had
What is parity?
-the number of pregnancies in which the fetus or fetuses reached 20 weeks
How many weeks is considered preterm?
-up to 37 weeks
**What is the acronym GTPAL for?
G- gravida T- term P- preterm A- abortion L- living children
During the first trimester, how is the mother psychologically reacting?
-she reacts with AMBIVALENCE
“I’m pregnant?!”
During the second trimester, how is the mother psychologically reacting?
-she reacts with EXCITEMENT
“Look everyone! I’m pregnant!”
During the third trimester, how is the mother psychologically reacting?
-she reacts by PREPARING
“Wait! I’m not ready!”
Where is HCG produced early in pregnancy and what does it do?
- produced by the ovaries initially
- supports implantation and establishment of pregnancy
When is urinary urgency and frequency most often noted during pregnancy?
-in the first and third trimester
What cardiovascular changes occur in the pregnant woman?
- cardiac output increases 30-50%
- HR increases 15-20 bpm
- RBC increase by 30%
- blood volume increases by 18-30%
What is supine hypotension and how do we correct it?
- when the pregnant woman lies on her back it partially occludes the inferior vena cava and the aorta
- correct it by assuming a lateral position