Antepartum Flashcards
Exam 2 (39 cards)
What are the 3 stages of human development?
- Fertilized Ovum=Zygote
-Conception to day 14 or wk 4 from LMP
-Blastocyst/trophoblast outer by day 5 within uterus
-Implantation day 7-10 complete - Embryo
-End ovum day, starts 15-18 wks - Fetus
-8-40 wks
What is an ovum?
An ovum is an egg.
What is a zygote?
A zygote is a fertilized egg.
How many cells do blastocyst have by day 5?
70-100 cells
When does implantation begin?
Day 5 or 6
In what stage is the least vulnerable to malformations?
Once its a fetus, it’s the least vulnerable but it can still impair or damage organs such as the heart, lungs, kidneys, liver, gallbladder, etc.
At how many weeks are all major organs formed?
8wks
Is it normal for the baby’s heart rate to be fast?
Yes, it is. The heart rate can go up to 180
At how many weeks is there enough surfactant in the alveoli?
32 wks
What does surfactant do in the lungs?
The surfactant lowers surface tension at the air-liquid interface and therefore preventing alveolar collapse at end-expiration.
At how many wks do the bronchi enlarge?
16-24 wks
When do the alveoli form?
16-24 wks
What is used to measure fetal lung maturity?
Lecithin/Sphingomyelin ratio 2:1
What conditions accelerate lung maturity?
Maternal BP, infection
Do twins mature faster or slower?
Twins mature faster because the uterus sometimes can’t handle having two or more babies for a long time.
Why is wk 1-2 insensitive to teratogens?
Its not connected to the mom.
What is TORCH syndrome?
It is caused by infections.
T-oxoplasmosis: protozoa (cate feces)
O-ther: Hep A, B virus
R-ubella virus
C-ytomegalovirus: CMV (baby lived less than 6 months)
H-erpes Simplex virus type 2
Varicella syndrome
Short limbs, 30% mortality, scars, neuro and ophthalmic conditions
Pneumonia most common effect in mother
Fetus high transmission if first 16 wks
When does a woman know she is pregnant?
About 4 wks
Physical changes in pregnancy?
Endocrine system
-increase thyroid gland activity, but does not result in hyperthyroidism
-oxytocin(posterior pituitary) increase amounts as fetus matures. Higher levels of progesterone prevent oxytocin from finding receptor sites in uterus and stimulating uterine contractions
-Prostaglandins responsible for relaxation of ligaments, soften and ripen cervix(open for labor)
-Parathyroid hormone controls Ca and Mg metabolism
-Pancreatic enzymes and insulin
-Adrenals circulating cortisol regulates CHO and Pro metabolism, increase due to estrogen hormone
What is the honeymoon phase?
24-48 hrs postpartum
First trimester discomforts?
Nasal stuffiness, epistaxis, breast chg, urgency/frequency, fatigue, NV, ptyalism
Second trimester discomforts?
Heart burn, contipation, varicose veins, food cravings, backache, round ligament pain, leukorrhea
Third trimester discomforts?
Leg cramps, ankle edema, dypnea, Braxton -Hicks, insomnia, urgency, hemorroids, moods